jetting - wisecycleworks.comwisecycleworks.com/docs/jetting.pdf · Carb jetting for Amal, Mikuni,...

Carb jetting for Amal, Mikuni, Dell'orto, Weber, etc.

Please send corrections, comments, additions, etc. to mason at postdiluvian dot org.

These jettings have been culled from various sources - some are from carbs that I jetted, some are from carbs that I took apart, some are from shop manuals, some from people who have worked them out, and some I just found on the net. I do not mean to plagiarize anyones work, drop me a line if you'd like an attribution or don't want your secrets posted here.

See the end of this page for some related links.

Misc Mikuni Yamaha XS650

Type Start Jet Pilot Jet Air jet Throttle Slide Needle Needle Jet Main Jet Float levelLoud pipe, K&N VM34 27.5 2.0 6F4 Q-6 190

Yamaha SR500 Type Start Jet Pilot Jet Air jet Throttle Slide Needle Needle Jet Main Jet Float levelLoud pipe, K&N VM36 35 3.0 6DH3 P-8 240

Stock VM34SS 1977-1979 25 3.5 6FL25 P-8 300

Stock VM32SS 1980 and on 20 3.5 5FL31 P-8 260

SR500 Loud Minton

VM32SS 1980 and on 20 3.5* 5FL31

Raise 1mm P-8 290

SR500 Loud Minton

VM34SS 1977-1979 25 3.5* 6FL25

Raise 1mm P-8** 310-330

Loud Minton is stock airbox with K&N filter and Supertrapp with 8 discs. See "Minton Mods"* Slide: 0.050" filed off the bottom of the throttle slide.** Use smaller needle jet (P-6 or P-4) to lean out midrange if it's too rich. This will also improve the mileage.

Stock Yamaha XT500 Type Start Jet Pilot Jet Air jet Throttle Slide Needle Needle Jet Main Jet Float levelXT500C VM34SS 60 35 0.8 4.5 5J10-3 Q-2 210 22.0mmXT500D VM32SS 60 30 0.8 4.0 6H2-4 Q-2 240 22.0mmXT500E VM32SS 55 25 3.5 6FL24-3 Q-0 230 24.0mm?XT500F VM32SS N/A 25 N/A 3.5 6FL24-3 Q-0 230 22.0mmXT500G XT500H VM32SS N/A 20 N/A 3.5 5FL34 P-8 250 23.5mm

Various Mikuni Motorcycle Type Main

JetPilot Jet

Needle Jet Needle Air

Jet Slide Comments

AJS/Matchless G80CS Mikuni VM32 230 30 P2 6DH3 - 3.0 AJS/Matchless G80S Mikuni VM26 210 15 P6 5F21 1.1 2.5 with K&N filterBMW R100 Mikuni VM34 230 40 P4 6DH4 - 2.0 BMW R75/5 and R100 Mikuni VM32 200 35 P2 6DH3 - 2.5 Stan Smith at RockyPointCycleBSA B50 1971 Mikuni VM38+ 275 25 P8 6DH4 0.8 2.5

Harley-Davidson EVO 1340 Mikuni HSR42 160 30 Y6 8DDY01-96 - - Standard Jetting

Harley-Davidson EVO 883-1340 Mikuni HS40 165 17.5 Y6 9DJY01 1.1 - Standard JettingHedlund V-2 Mikuni VM34 210 35 P5 6F5 - 3.5 Honda 450 racing Mikuni VM36 240 35 Q0 6DP17 2.0 Honda 500T Mikuni VM34 190 35 P5 6DH7 Honda CB 750 tom 1978 Mikuni VM29 A2 115 17.5 O6 5DL31-3 0.9 1.5 Honda CB 900, 1000 Mikuni VM33 A4 125 30 O8 6DJ30-2 0.7 1.5 Air screw one full turn out!

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11/25/2011http://www.farm.net/~mason/moto/jetting.html

1975 Morini 3 1/2 Strada - 26mm PHBH round slide Dellorto - Works well at 6000 feet elevation: Slide #50 Needle X1, clip in second slot from top. Main jet #120 Idle (Pilot) jet #45 Atomizer/needle jet #266T Starter jet #48 Fuel inlet valve #200 Herdan says "european kit" jetting is: Slide #50 Needle X1 Atomizer/needle jet #266T Pilot jet #50 Main jet #125 Starter jet #48

These figures should be for the Mikuni BST33SS "Slingshot". ~1990 Suzuki GS500:

Honda CB350 racing Mikuni VM32 200 30 P8 6F5 2.0 2.5 Honda CB450 racing Mikuni VM34 220 35 P4 6DH2 2.5 Honda XR 650 Mikuni TM40 150 25 9DJY4 1.0 Kawasaki KZ 1000, 1100 Mikuni RS38 135 17.5 Y6 9CHY3 Pilot screw 1/4-1/2 turn out

Kawasaki KZ 1000, 1100 Mikuni VM33A14 127.5 17.5 O6 6DJ30-4 1.2 1.5

Kawasaki KZ 650, 900, 1000 Mikuni VM29 A7 120 25 O6 5DL31-3 0.9 1.5 Kawasaki KZ 750 Mikuni RS34 115 17.5 P4 9DZH1 Pilot screw 1/4-1/2 turn outKawasaki Ninja 900, 1000 Mikuni RS36 130 17.5 P4 9DZH1 Pilot screw 1/4-1/2 turn out

Kawasaki ZX 900, 1000 Mikuni VM33A19 125 20 P0 6DJ30-4 0.9 2.0 Mikuni model D40

KTM 640 LC4e Mikuni TM40 165 22.5 9DJY4 1.1 modified air box, open exhaustKZ Race, GSX-R, GS Mikuni RS40 140 17.5 Y6 9CHY3 Pilot screw 1/4-1/2 turn outNorton 850 1970, dual carbs Mikuni VM36 300 40 P8 6DP17 0.7 2.5 Norton 850 1970, single carb Mikuni VM36 300 40 P8 6DP17 0.7 2.5

Norton 920 1970, single carb Mikuni VM38 320 45 P4 6DH3 2.5 (humet150) by Allens of Nottingham

Royal Enfield Bullet 350 2003 Mikuni VM24 110 25 Royal Enfield Bullet 500 2003 Mikuni VM28 127 30 4DH7

Suzuki GS 1000, 1100 Mikuni VM33A14 132.5 17.5 O6 6DJ30-4 0.6 2.0

Suzuki GS 750, 1000 Mikuni VM29A12 115 25 O6 5DL31-3 0.9 2.0

Suzuki GSX600, 750, 1100, 1150 Mikuni RS36 120 17.5 P4 9DZH1 Pilot screw 1/4-1/2 turn out

Suzuki GSX600, GS750 Mikuni RS34 115 17.5 P4 9DZH1 Pilot screw 1/4-1/2 turn outSuzuki GSXR 750, 1100,1150 Mikuni RS38 135 17.5 Y6 9CHY3 Pilot screw 1/4-1/2 turn out? Mikuni VM32 165 30 P4 6DH4 N/A 2.5 Triumph 650 1970, dual carbs Mikuni VM32 220 25 P4 6DH2 1.0 2.5 Triumph 650 1970, single carb Mikuni VM34 260 35 P6 6DH4 1.0 2.5 Triumph 750 1970, dual carbs Mikuni VM34 260 30 P6 6DH3 1.0 2.5 Triumph Cub Trials 1965 Mikuni VM22 140 25 O6 4D8 1.0 2.0 Yamaha TT 500 race Mikuni VM38 260 30 P5 6F8 0.5 2.5 John Citizen

Yamaha XS 1100 Mikuni VM33A19 132.5 17.5 O6 6DJ30-4 0.9 2.0 Mikuni model D45

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Stock main jet for a 1990 is supposedly 120. Factory jet kit includes 125 and 127.5 Mains Main jets as high as 130 and as low as 118 have been reported. 1991 Suzuki GS500: Main - 120 to 122.5 Needle - 5DH9 or 5DH8 Needle Jet - 0-3 Pilot - 37.5

Suzuki Bandit 1200 Carb type: Mikuni BST36SS Main Jet: 102.5 Jet Needle: 5D76-4th (5D80 - CA emissions) Needle Jet: O-8 (0-8M - CA emissions) Throttle Valve: #120 Pilot Jet: #37.5 Pilot Screw: PRESET (1-3/4 turns)

Honda Hawk: For stock bike or quiet aftermarket exhaust, put a 1mm shim under the needle clip - #2 washer should be right diameter. For loud exhaust and/or no airbox top, move 138 front main jet to rear, put 145 on front, raise needle 0.030", set pilots to 2 turns out. Factory 1.0 Jet Kit contains: (2) #45 pilot jets (2) #0968e5-80i-40qr 5 position needles (richer than stock) (1ea.) #135,140,142 main jets (8) carb top allen screws reasonable set-up instructions example settings from real users Factory 3.0 Jet Kit contains: (2) #45 pilot jets (2) #0968e5-76i-40qr 5 position needles (richer than stock or Factory's 1.0 needles) (2ea.) # 148,150,152 main jets

Bandit 1200 1996-2000 Mikuni BST36SS

Main Jet Size

Pilot Jet Size Needle Shim Idle Screws Float

HeightStage 0

(completely stock or aftermarket exhaust only)

102.5 (Stock) 37.5 (stock) 0.04-0.05" 2 to 3 turns out 14.7mm

Stage 1 (K&N filter, 2" mod, aftermarket exhaust) 127.5 35 0.04-0.05" or Holeshot needles 2/3 notches

from full-rich2.5 to 3.25 turns

out 14.7mm

Stage 2 (Dual K&N ovals, no airbox, aftermarket

exhaust)150 32.5 0.04-0.05" or Holeshot needles 2/3 notches

from full-rich 2.75 to 3.5 turns

out 14.7mm

Bandit 1200 2001 / 2002 Main Jet Size Pilot Jet Mid Jet Needle Shim A/F Mixture Screws Float Height

Stock 100 15 60 Stock 2.5 to 3.0 turns out 13.0mmStage1

Slipon Exh. 110 15 60 .020 2.5 to 3.0 turns out 13.0mm

Stage2 Dual K&N Jet Kit Full Exhaust 155 to 160 15 60 .020 to .030 3.0 turns out 13.0mm

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ss allen head carb top and float bowl screws reasonable set-up instructions example settings from real users Factory 3.0 Ti Jet Kit contains: same parts as Factory 3.0 Jet Kit but w/Ti needles rather than stainless steel HRC Jet Kit contains: 2ea #45 slow jets, 2ea #152, #155, #158, #160, & #162 main jets, 2ea slide/diaphragm units, 2ea slide return springs, 2ea needle holders, 2ea needle shim sets, 2ea #N2345, #N2346, and #N2347 needles, and 1ea package of assorted rubber plugs. Set-up #1 Motor - stock Airfilter - stock airbox w/lid Exhaust - stock Main jets - 145f, 138r Needles - stock, shim .030" Pilot jets - stock, 2 turns out Set-up #2 Motor - 697cc no porting, stock valves Airfilter - UNI pods Exhaust - SuperTrapp w/open end cap Main jets - 160 both Needles - Factory 3.0 needles 4th position Pilot jets - 45, 3 turns out Set-up #3 Motor - stock Air filter - Uni pods Exhaust - Muzzy slip-on Main jets - #148 rear, #150 front Needles - Factory 3.0, 3rd position from top Pilot jets - #42(stock), screw 3 turns out Slide springs - stretch to 7.5" length

Ducati Weber Type Choke Aux Venturi Main Jet Air Correct Idle

906 Paso 44DCNF 116 36 350 160 175 60

900 SS 44DCNF 118 36 350 160 175 65

750 Paso 1986/1987 44DCNF 107 F36 350 142 160 60

750 Paso 87/later 44DCNF 107 36 350 150 170 57

750 Sport 44DCNF 113 36 350 150 170 57

Ducati DellOrto Type Needle Main Jet Pilot Jet Slide Needle Jet

650 Alazzurra PHF36MD/MS K8/2nd 132/138 65 60/3 265AB

750 F1 1985 PHF36AD/AS K8/2nd 140 65 60/3 265AB

750 F1 1986 PHF36MD/MS K8/2nd 135/140 65 60/3 265AB

Ducati Mikuni Type Needle Main Start Jet Needle Pilot Jet

750 SS 1991-1993 BDST 38 B 70 5C19-4 140 70 37.5 Y-6

750 SS 1994-1997 BDST 38 B 70 5C19-3 140 70 37.5 Y-6

750 SS 1991-1993 US BDST 38 B 76 5C26-1 140 70 355 Y-6

750 Monster 1996-1999 BDST 38 B 216A 5CJ01-4 132.5 70 42.5 Y-4

900 SS CR/SP US 1991-1997 BDST 38 B 73 5C22-1 140 70 37.5 Y-2

900 SS SL 1991-1997 BDST 38 B 67 5C19-4 140 70 42.5 Y-2

900 Monster 1993-1996 BDST 38 B 129 5C19-4 140 70 40 Y-2

900 Monster US 1993-1996 BDST 38 B 132 5C37-3 140 70 42.5 Y-2

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AMAL NOTE: Main and pilot jets are interchangable between Amal MK1 and MK2s. The needle jets look similiar, but are not the same.

Stock T140 Triumph: 930 Concentric 190 main 106 needle #3 slide "STD" needle in the second position

Stock Pre-1980 T140E: 30mm Amal MKII 200 Main jet 25 Pilot jet 50 Starter jet .105 Needle jet 2C3 needle - 2nd groove #3 Throttle slide Stock Post-1980 T140E and T140D: 30mm Amal MKII 200 Main jet 20 Pilot jet 35 Starter jet .106 Needle jet 2C3 needle - 2nd groove #3 Throttle slide Triumph TSS: 34mm Amal MKII Pilot Jet: 20 Cold Start Jet: 35 Needle Jet: 106 Main Jet: 230 Needle: 2C3 Slide: 3 1/2

850 Triumph: 34 mm Amal Mark 2. 320 main jet .106 needle jet 25 pilot 50 choke #3 throttle slide 2A1 needle.

350cc Aermacchi racer: carb: 34mm Spanish Amal bored to 35mm * main jet 220/230 * pilot 25 * needle jet 105 * needle 2C3 using bottom notch * needle 2A1 using top notch * slide #3

2003 Enfield Bullet Clubmans - free flow exhaust and air filter. Gives good mid and top end power, slightly reduced fuel economy. 30mm Amal Mark 2: 3.5 slide 240 Main

900 Monster 1997-1999 BDST 38 B 222 5C19-4 127.5 70 40 Y-2

900 Monster US 1997-1999 BDST 38 B 67 5C37-3 127.5 70 40 Y-2

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25 Pilot 2A1 (Standard needle) clip in second groove from top 106 Needle jet Air screw about 1.5 turns out

Norton Twins YEAR MODEL TYPE MAIN

JET PILOT JET

SLIDE TYPE

NEEDLE POSITION

67-68 Atlas 930/7-8 220 25 2 2

67-68 650SS 930/? 280 25 3 2

67-68 P-11 930/7-8 250 25 3 ?

68 Commando 930/26-27 220 25 3 2

69 Commando 930/30-31 220 25 3 2

70 Commando 930/46-47 220 25 3 2

71-72 Commando 930/68-69 220 25 3 2

72 Combat 932/19-20 220 25 3 1

73 750 930/82-83 220 25 3 2

73 Combat 932/26-27 230 25 3 1

73-74 850 (with reversed cones) 932/29-30 260 25 3.5 2

73-74 850 (with black caps) 932/31-32 230 25 3.5 2 or 3

74

850 (with Interstate pipes? This set up looks too rich to me)

932/35-36 260 25 3.5 3

74 850 932/33-34 220 25 3.5 2

75 850 932/33-34 230 25 3.5 1 or 2

Needle position 1 is the top clip - the leanest setting.

Triumph Part Number Size

mmMain Jet

Pilot Jet

Slide No.

Needle Pos.

Needle Jet

T100 1955-59 376/15 1 5/16" 220 25 3.5 4 106

T100SS 1961-65, T100/R/C 1966, T100S/C 1967 376/16 1" 190 25 3.5 3 106

TR6 1956-63 376/17 1 1/16" 250 25 3.5 3 106

T120 1964-67, T120R 1966 389/18 1 1/8" 260 25 3 3 106

6T 1963-66 376/17 1 1/16" 230 25 4 4 106

Norton Part Number Size

mmMain Jet

Pilot Jet

Slide No.

Needle Pos.

Needle Jet

99 1956-62, 99 (twin carbs) 1959-62, 99SS 61-62 376/17 1

1/16" 250 25 3 3 106

650 1961-63, 650 De Luxe 389/18 1 1/8" 320 25 3 2 106

750 Atlas 1962-66 376/17 1 1/16" 400 20 3.5 4 106

750 Atlas 1963-64, 1966 389/18 1 1/8" 420 20 3 3 106

750 Atlas 1965 & 1966 export 389/18 1 1/8" 350 20 3 3 106

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BSA Part Number Size

mmMain Jet

Pilot Jet

Slide No.

Needle Pos.

Needle Jet

B31 1955-59 (without filter) 376/16 1" 260 30 3.5 2 106

B31 1956-57 (with filter), B31 export 58-59 376/16 1" 200 30 3.5 2 106

B33 1955-57, B33 home 1958-60 376/17 1 1/16" 260 25 3.5 3 106

A10 1955-57 376/17 1 1/16" 240 25 4 3 106

A50 USA 1963-67 376/16 1" 260 25 3.5 3 106

A65 1962, 1964-65 389/18 1 1/8" 300 25 3.5 3 106

BSA Part Number Size Main

JetPilot Jet

Slide No.

Needle Pos.

Needle Jet

B34GS Clubmans 1956-60 316/394 1 1/2" 350 N/A 4 3 109

B34GS Clubmans 1961-63 316/394 1 1/2" 350 25 4 3 109

Triumph with Concentric Part Number Size

mmMain Jet

Pilot Jet

Slide No.

Needle Pos.

Needle Jet

T100C 1971-72 R626/300 26 170 N/A 4 2 106

T100R 1972 L626/301 & R626/300 26 150 N/A 3 1 106

TR61969-70 R930/300 30 230 N/A 3.5 2 106

T120 1968-70 L930/301 & R930/300 30 190 N/A 3 2 106

TR7V 1976-77 R930/300 30 270 N/A 3 2 106

T140 1976-77 L930/301 & R930/300 30 190 N/A 3 2 106

Norton with Concentric Part Number Size

mmMain Jet

Pilot Jet

Slide No.

Needle Pos.

Needle Jet

650/model 99 1967-68 L930/301 & R930/300 30 260 25 3 2 107

750 Atlas 1967-68 L930/301 & R930/300 30 220 25 2 2 106

Commando 1969, 1971-72 L930/301 & R930/300 30 220 N/A 3 2 106

Commando 850 MkIII 1975-77 L932/301 & R932/300 32 230 N/A 3.5 1 or 2 106

BSA with Concentric Part Number Size

mmMain Jet

Pilot Jet

Slide No.

Needle Pos.

Needle Jet

A65L 1968-69, A65F 1968 L930/301 & R930/300 30 190 20 2.5 2 106

A65L&F 1970 L930/301 & R930/300 30 180 N/A 3 1 106

B25 1969-70 R928/300 28 260 25 3 2 106

B44VR 1967, B44SS 1968 R930/300 30 230 25 3 2 107

B50MX 1971-72 R932/300 32 250 N/A 3 2 106

Triumph with MK II Part Number Size

mmMain Jet

Pilot Jet

Slide No.

Needle Pos.

Needle Jet

T140E 1979-80 L2930/301 & 30 200 25 3 2 105

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R2930/300

T140E/D 1981 L2930/301 & R2930/300 30 200 20 3 2 106

TSS 8 valve 1982 L2934/301 & R2934/300 34 230 20 3.5 2 106

Ossa with Concentric Part Number Size

mmMain Jet

Pilot Jet

Slide No.

Needle Pos.

Needle Jet

Enduro 250 L932/436 32 260 40 3.5 2 108

AMAL THROTTLE NEEDLES PART NOS. MARKINGS WHERE USED

4/065 4 Series 4, series 74 & series 274




185/119 RN Remote Needle Carburettors

316/007 GP GP carburettors

316/029 5GP6 GP carburettors

316/030 GP6 GP carburettors

316/146 5GP GP carburettors

316/408 3GP6 GP carburettors

316/465 3GP GP carburettors

316/502 TT2 TT series carburettors

3971 10 TT series carburettors

Spain GP Dl GP carburetters

363/013 A Monobloc (BSA)

370/013 E Monobloc

375/063 B Monobloc

375/105 B2 Monobloc

376/063 C Monobloc

376/096 CI Monobloc (BSA Special)

376/116 C2 Monobloc

389/063 D Monobloc

389/088 D2 Monobloc

416/067 R 400 series

622/063 U Spanish - Mark 1 2 stroke

622/063 1 V groove UK Mark 1 - 2 stroke (profile same as above)

622/099 Y Spanish - Mark 1 - alcohol

622/124 U1 or 2 V groove Mark 1 - 4 stroke

622/176 XA Mark l 1/2

622/278 5 V groove Mark 1 - 4 stroke emission setting

928/063 X or 3 V groove Mark 1 - 2 stroke

928/075 XI

928/099 Z Mark 1 - alcohol

928/104 4 V grooves Mark 1 - Norton special

928/108 XB

928/113

1034/063 0 Mark 1 - 2 stroke

1034/077 P1 Alcohol (rich setting)

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Interchangable Amal parts, courtesy of Charles Falco: Commonly "Interchangeable" Amal Parts Carburetor needle needle main main jet pilot jet jet holder jet R.N. (15RN=1"-1-1/16"; 10RN=1-1/8"-1-3/16") 15RN9 185/119 185/109 3326 15/625 2966 10RN9 185/119 185/109 3326 15/625 2966 Note: A 1960 price list lists 3326 as a "TT jet," whereas 376/100 is simply a "main jet." T.T. (15TT=1"-1-1/16"; 10TT=1-1/8"-1-3/16") 15TT9 3971 3970 3326 15/625 2966 10TT9 3971 3970 3326 15/625 2966 G.P. (15GP=7/8"-1-1/16"; 10GP=1-1/16"-1-7/32"; 5GP=1-7/32"-1-3/8"; 3GP=1-3/8"-1-1/2"; flange bolt centers 2" for 15GP and 10GP and 65mm for 5GP and 3GP) T15GP std 316/007 316/065 3326 15/625 376/076 (weak 316/030) T10GP std 316/007 316/065 3326 15/625 376/076 (weak 316/030) T5GP std 316/146 316/065 3326 15/625 376/076 (weak 316/029) T3GP std 316/465 316/065 3326 316/027 376/076 (weak 316/408) Note: In all cases the standard needle is known as a "nGP" (e.g. "3GP") and the weak as a "nGP6." T15GP2 std 316/007 316/065 376/100 15/625 376/076 (weak 316/030) T10GP2 std 316/007 316/065 376/100 ? 376/076 (weak 316/030) T5GP2 std 316/146 316/065 376/100 ? 376/076 (weak 316/029) T3GP2 std 316/465 316/065 376/100 ? 376/076 (weak 316/408) Monobloc (375=21/32"-7/8"; 376=15/16"=1-1/16"; 389=1-3/32"-1-3/16") 375 "B" 375/063 376/072 376/100 376/073 376/076 376 "C" 376/063 376/072 376/100 376/073 376/076 389 "D" 389/063 376/072 376/100 376/073 376/076 Note: "B," etc. are stamped on the needles for identification. Concentric (Mark I) (600=22, 24 & 26mm; 900=28, 30 & 32mm; 1000=34, 36 & 38mm) 4-cycle use: 600 622/124 622/122 376/100 622/128 124/026 900 622/124 622/122 376/100 622/128 124/026 1000 622/124 622/122 376/100 622/128 124/026 Note: The only Amal parts list I have that covers Concentrics gives the same part number for the above three needles, although this doesn't make sense. 2-cycle use:

1034/098 OA

1034/099 P Mark 1 - alcohol

2036/063 2F1 2000 series - 2 stroke

2036/077 2E3 2000«series - Alcohol

2036/124 2E1 2000 series - 4 stroke

2036/125 2E2 2000 series - Alcohol

2622/063 2B1 2600 series - 2 stroke

2622/124 2A1 Mark 2 - 4 stroke

2622/125 2A2 Alcohol settings

2928/030 2C3 4 stroke emission setting (Triumph)

2928/063 2D1 2 stroke

2928/124 2D2 4 stroke

2928/125 2C2 Alcohol settings

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600 622/063 622/079 376/100 622/128 124/026 900 928/063 622/079 376/100 622/128 124/026 1000 1034/063 622/079 376/100 622/128 124/026 needle needle main main jet pilot jet jet holder jet Other Notes: --Of course, in addition to the basic part numbers for the jets, each is available in a number of sizes. --Although most Amal sheets for the RN, TT, and early GP call for a 3326 main jet, other sheets list the 376/100. Nicholson's book says "The monobloc and T.T. type main jets can be used in the G.P. carburetor." The jets are physically quite different in appearance, so I can only speculate that since the main jet is submerged well below the top of the fuel level, only the internal bore matters. Perhaps they developed the 276/128-style jet for the then-new Monobloc, discovered it functioned fine in the other carbs, and then standardized on it. --Needles for a variety of special applications also were available (e.g., alcohol fuel, the Norton 850 and Triumph T160, etc.). Listed above are only the "standard" needles. --I don't have a parts list for Mark II Concentrics. If someone has this information, it would be nice to include it in my final table.

Weber

DGV | DFV | DFTA/DMTR | DCNF | DCOE | IDA | IDF | ICH/ICT OEM jetting

Carb Type PN Main Venturi

Aux. Vent.

Main Jet

Emulsion Tube

Air Correc.

Idle Jet

Pump Jet

Pump Bleed

Needle Valve

Float Level * Derivation

DGV & derivitives

28/30 DGV 14A 22550.001 21/22 4.5/4.0 115/105 F50/F50 200/200 55/50 50 40(1) 200 (2) Ford Europe

32 DGV 7A 18870.056 23/24 3.5/3.5 125/130 F50/F6 180/180 55/50 55 40(1) 200 (2) Ford Europe

32/36 DGV 22680.005 26/27 3.5/3.5 140/135 F50/F6 165/160 55/50 50 30(1) 200 (2) Ford Europe

32 DGAV 18870.270 23/24 3.5/4.5 120/115 F50/F50 160/120 45/45 45 30(1) 200 41/52 Ford Europe

32/36 DGAV 22680.051 26/27 3.5/3.5 140/140 F50/F50 170/160 60/50 50 30(1) 200 (2) Ford Europe

32 DGEV 18870.271 23/24 3.5/4.5 120/115 F50/F50 160/120 45/45 45 30(1) 200 41/52 Ford Europe

32/36 DGEV 22680.065 26/27 3.5/3.5 140/140 F50/F50 170/160 60/50 50 30(1) 200 (2) Ford Europe

34 DGAS 18890.055 24 4.5 122 F50 180 45 55 40(1) 250 40/52.5 Ford Europe

38 DGAS 18930.018 27 4.0 145 F50 185 45 70 30(1) 250 40/52.5 Capri Europe

38 DPS 100 18930.070 27 3.5 155 F80 155 55 60 35(1) 250 41/52.5 Peugeot

Africa

DFV & derivitives

32/36 DFV 22680.001 26/27 4.5/4.5 145/145 F6/F6 170/180 45/50 65 -(1) 200 36.5/46.5 Ford Europe

40 DFAV 1 18950.051 28 4.5 180 185 F2 60 50 50(1) 250 6/14 Ford Europe

32/36 DFEV 22680.070 26/27 4.5/4.5 135/140 F6/F6 170/180 45/50 65 40(1) 200 38.5/46.5 Redline Inc.

Conversion

DFTA/DMTR

32 DFTA 22/22 4.0/4.0 100/105 F22/F22 250/250 60/60 45 40(1) 150 7/16 Ford Fiesta,

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18870.326 USA

34 DMTR 18890.062 25/26 4.0/4.0 120/150 F30/F30 160/240 50/100 45 closed

(1) 175 7/16 Lancia Europe

DCNF

36 DCNF 17/18 18190.049/.048 29 3.5 120 F36 185 45 40 40(1) 175 52/58.5 Chrysler

France

40 DCNF 12 18950.060 32 4.5 125 F24 220 50 45 40(1) 175 50/58.1 Fiat Dino V6

42 DCNF 9 18970.005 34 3.5 140 F25 180 60 40 40(1) 200 48/58.5 Maserati

Ghibli

44 DCNF 44 18990.009 36 3.5 140 F25 170 65 40 40(1) 200 48/58.5 Maserati

Merak

DCOE

40 DCOE 18 (R&L) 19550.013/.014

30 4.5 115 F11 200 45F9 40 50 175 8.5/15 Lotus Elan & Cortina

40 DCOE 32 (R&L) 19550.043/044

32 4.5 130 F9 200 50F8 35 60 150 8.5/15 Alfa 1750 Europe

40 DCOE 2 18550.005 33 4.5 115 F16 150 50F9 35 55 200 8.5/15 Lotus Seven

42 DCOE 8 19570.001 32 3.5 135 F15 155 55F2 45 closed 200 (3) Maserati

3500 GT

45 DCOE 9 19600.017 36 4.5 145 F16 155 55F8 45 40 200 7/13.5 Alfa Romeo

2600

45 DCOE 9 19600.027 38 3.5 175 F2 170 70F6 40 closed 200 (3)

45 DCOE 13 19600.003 38 5.0 160 F16 170 45F9 50 100 225 (3)

45 DCOE 13 19600.022 34 3.5 130 F2 175 50F9 50 50 225 (3)

45 DCOE 15/16 19600.004/.005 38 5.0 125 F9 170 45F8 40 70 225 7.5/14 BMW 1800

TI/SA

48 DCOE 98-1/99-1 19630.001/.002

42 4.5 180 F9 160 60F8 45 100 250 (3)Cosworth / Formula Atlantic

50 DCO SP/SP1 19650.001/.002 46 5.0 180 F7 160 65F8 45 100 250 12/- Opel 2.4

Rallye

50 DCO SP/SP1 19700.001/.002 48 5.0 180 F9 180 60F8 45 100 250 12/-

IDA

40 IDA 3C/3C1 31300.001/.002 30 4.5 125 F26 180 55 50 closed 175 12.75/- Porsche 911

46 IDA 3C/3C1 31360.001/.002 42 4.5 170 F24 145 70 50 40 175 12.75/- Porsche

Carrera 6

48 IDA 4 19030.007 37 4.5 135 F7 120 70F10 50 closed 200 24/- Redline Inc.

Conversion

IDF

40 IDF 18/19 18950.069/.070 28 4.5 115 F11 200 50 50 50 175 10/32.5 Special

Applications

40 IDF 48/49 18950.126/.127 28 4.5 115 F11 200 50 50 55 175 10/32.5 Redline Inc.

Conversion

40 IDF 13/15 18950.057/.059 32 4.5 125 F11 210 55 40 50 175 10/32.5 Fiat 124 Spy

Europe

44 IDF 38/39 18990.013/.014 36 4.5 170 F11 200 50 55 80 175 10/32.5 Special

Applications

44 IDF 50/51 18990.024/.025 36 4.5 170 F11 200 60 55 55 175 10/32.5 Redline Inc.

Conversion

48 IDF 4/5 19030.016/.017 40 4.5 165 F11 190 65 40 100 200 22/32 Redline Inc.

Conversion

48 IDF 1-

of 28Carb jetting


100/2-100 19030.010/.011 40 4.5 165 F11 190 65 40 100 200 22/32 Fiat

ICH/ICT

34 ICH 15290.020 25 4.5 130 F6 150 57 50 40(1) 175 6.5/13 Special

Applications

34 ICT 15290.035 29 4.5 130 F78 160 50 50 40(1) 175 6.5/13 Redline Inc.

Conversion

(1)=not serviceable -- (2)= w/brass float41/51, w/plastic float 35/51 -- (3)=varies according to installation

*=closed/open measurements -- Emulsion tube F numbers can't be compared between differing carb types --

BOLOGNA FACTORY STANDARD SINGLES Model Year Dell'Orto type Size Needle Main Pilot Slide Needle pos. Needle jet

60 Sport 1950-51 MA16B 16 D15 70 45 50 2 260B

98N 1952-58 MA16B 16 D12 75 35 40 2 260B

98T 1952-58 MA16B 16 D12 75 35 40 2 260B

98TL 1953-58 MA16B 16 D12 75 35 40 2 260B

98S 1953-58 MA18B 18 D16 82 35 60 2 260B

98 Super Sport 1954-55 MB20B 20 E10 72 35 50 - -

55E 1955-57 14MFC Weber Carb. 60 45 - - -

55R 1955-57 14MFC Weber Carb. 60 45 - - -

55M 1955-57 14MFC Weber Carb. 60 45 - - -

125T 1956-60 MA18B 18 D12 80 40 50 2 260A

125TV 1956-58 MB20B 20 E10 82 35 50 2 260B

85N 1958-60 ME15BS 15 G4 70 35 50 2 258A

85 Sport 1958-60 ME15BS 6v G4 70 35 50 2 258A

98TS 1958-60 ME16BS 16 G1 74 35 50 3 258A

175S 1957 MB22.5B 22.5 E14 98 80 40 2 260B

175T 1957 MB22B 22 E12 92 45 80 2 260B

125S 1957 MB20B 20 E9 78 38 70 3 262A

100 Sport 1958-60 MA18B 18 D17 78 35 50 2 260A

125 Sport 1958-65 UB20BS 20 E10 85 35 50 2 260B

125 Sport(opt) 1958-61 SS1 22C 22 R4 92 50 80 3 260

125TS (note 1) 1958 UA20BS 20 E10 85 35 50 2 260B

125TS 1959-65 ME18BS 18 G4 76 38 50 3 258B

175 Americano 1958 MB22B 22 E12 92 45 80 2 260B

175 Sport 1958-61 UB22.5BS2 22.5 E14 98 40 80 2 260B

175 Sport(opt) 1959-61 SS1 25A 25 M14 120 50 100 2 265

175 Tourist 1958-61 MB22B 22 E12 92 45 80 2 260B

175TS 1958-60 MB22B 22 E12 92 45 80 2 260B

200 Elite 1959-65 UBF24BS 24 E10 98 40 70 2 260B

200 Super Sport 1959-62 UBF24BS 25 E10 98 40 70 2 260B

200 Super Sport(opt) 1959-62 SS1 27A 27 M13 108 50 80 3 265

200 Americano 1959 UBF24BS 24 E10 92 40 70 2 260B

200 Motocross 1959-60 SS1 27A 27 M13 105 50 80 3 265

200TS 1960-61 UBF24BS 24 E10 92 40 70 2 260B

200GT 1962 UBF24BS 24 E111 95 40 70 2 260A

250 Monza (narrow case) 1961-67 UBF24BS 24 E11 108 40 70 2 260B

Diana Europe 1961-64 UBF24BS 24 E11 103 35 70 2 260A

Diana USA 1961 UBF24BS 24 E11 108 40 70 2 260B

Diana Mk3 USA 1962-65 SS1 27D 27 M14 120 50 100 2 265

of 28Carb jetting


Diana Mk3 USA 1966-67 SS1 29D 29 M14 125 50 60 2 265

250 Mark 3(narrow case) 1967 SS1 29D 29 M14 125 50 60 2 265

250 Scrambler(narrow) 1962-67 SS1 27D 27 M14 112 50 100 3 265

Mach 1 1964-66 SS1 29D 29 M14 122 50 60 2 265

250GT 1964-66 UBF24BS 24 E19 108 40 60 2 260B

250 Monza(wide case) 1968 UBF24BS 24 E11 108 45 80 2 260H

250 Mark 3(wide case) 1968-69 SS1 29D 29 M14 112 45 60 2 260

250 Mark 3(wide case) 1970-74 VHB29AD 29 V13 110 40 40 2 265M

250 Mark 3D 1968-69 SS1 29D 29 M14 115 45 60 2 -

250 Mark 3D 1970-71 VHB20AD 20 V13 110 40 40 2 265M

250 Scrambler(wide) 1968-69 SS1 27D 27 M14 112 50 80 3 265

250 Scrambler(wide) 1970-73 VHB26BD 26 E17 95 45 40 2 260R

250 Desmo 1971-74 VHB29AD 29 V13 110 40 40 2 265M

239 Desmo 1974 PHF30AD 30 K3 125 65 503 2 265AB

239 Mark 3 1974 PHF30AD 30 K3 125 65 503 2 265AB

Monza Junior 1964-67 UB22BS 22 E16 98 42 60 2 260A

Piuma Standard 1961-68 T4 12D1 12 A4 58 - - 2 1-210

Piuma Sport 1962-66 UAO15S 15 C1 68 45 65 3 260

Piuma De-Luxe 1962-67 T4 12D1 12 A4 58 - - 2 1-210

Brisk 1961-67 T4 12D1 12 A4 58 - - 2 1-210

Sport 48 1962-65 UAO15S 15 C1 68 - 45 3 260

180 Standard 1962-63 ME15BS 15 G1 63 40 - 3 258A

Sport 80 1962-63 UA18S 18 C1 92 35 55 3 260

49SL 1964-65 UA15S 15 C1 68 45 65 3 260

100 Cadet (51mm bore) 1964-66 UA18S 18 C2 82 38 50 2 260

100 Cadet (52mm bore) 1967 UBF24BS 24 E2 102 40 70 2 260A

100 Mountaineer (51mm) 1964-66 UA18S 18 C2 82 38 50 2 260

100 Mountaineer (52mm) 1967 UBF24BS 24 E2 102 40 70 2 260A

Brio 48 1963-66 SHA14 12 12 - 52 40 6493/01 - -

Brio 50 1967-68 SHA14 12 12 - 56 40 6108/01 - -

Brio 100 1964-68 SHB18 16 16 - 82 40 6493/01 - -

Brio 100/25 1968 SHB18 16 16 - 88 50 6493/02 - -

48 Cacciatore 1964-67 UA15S 15 C1 68 45 65 3 260

50SL 1966 UA18BS 18 D10 85 40 55 1 260F

50SL/1 1967-68 UAO18S 18 D10 85 40 55 1 260F

50SL/2 1968-69 UAO18S 18 D10 85 40 55 1 260F

Rolly 50 1968 SHA14 12 12 - 52 40 6493/01 1 -

50 Scrambler 1969-70 UA18BS 18 C8 85 40 50 3 260F

100 Scrambler 1969-70 UBF24BS 24 E2 102 40 70 2 260A

125 Cadet/4 1967 ME18BS 18 G3 85 38 50 2 258A

125 Cadet/4 Motocross 1967 ME18BS 18 G3 85 38 50 2 258A

Sebring(narrow case) 1965-67 UBF24BS 24 E16 108 40 70 2 260A

Sebring(wide case) 1968 UBF24BS 24 E16 108 40 70 2 260A

350 Scrambler 1968-69 SS1 29D 29 M14 125 50 100 2 265

350 Scrambler 1970-74 VHB29AD 29 V13 110 40 40 2 265M

350 Mark 3 1968-69 SS1 29D 29 M14 112 45 60 2 260

350 Mark 3 1970-74 VHB29AD 29 V13 115 40 40 2 265M

350 Mark 3D 1968-69 SS1 29D 29 M14 115 45 60 2 260

350 Mark 3D 1970-71 VHB29AD 29 V13 120 40 40 2 265M

350 Desmo 1971-74 VHB29AD 29 V13 118 40 40 2 265M

450 Scrambler 1969-74 VHB29AD 29 V17 130 50 60 2 265T

450 Mark 3 1969-74 VHB29AD 29 V7 135 50 60 2 260T

450 Mark 3D 1969-71 VHB29AD 29 V8 135 50 60 2 260T

450 Desmo 1971-74 VHB29AD 29 V8 135 50 60 2 260T

450R/T ( i )

of 28Carb jetting


Amal 375 Monobloc

Amal 376 Monobloc

Amal 389 Monobloc

Transcribed by Dennis Wright - scorpion at cdi.com.au. A note on Amal part numbers: There is some overlap between the part numbers for Amal carburettors and Amal carburettor parts. For exampke, Amal part number 389/063 is a 389 (Monobloc) carb for "Villiers 197cc 1962-63; 9E Super Sports". It's also the part number for a Monobloc needle. 928/076 is "obviously" the part number for a 28mm Concentric carb, but it's also the part number for a velocity stack for a Concentric. Amal 375, 376, and 389 Monobloc carbs should have a date code as well as the part number stamped on the flange. The date code will be something like "11 65", meaning November of 1965. There are not many foreign (non-British) bikes represented in this list. I suspect that German, American, Italian, etc. applications are covered elsewhere.

1971-72 VHB29AD 29 V7 140 50 60 2 265T

450T/S 1971-73 VHB29AD 29 V7 135 50 60 2 265T

450 Mark 3 Tourer 1970-72 VHB29AD 29 V7 130 50 60 2 265T

Regolarita 1975-76 PHB30BS 30 K3 125 65 50/3 2 265AB

Six Days 1977 PHBE32GS 32 K1 140 55 40 2 265AR

125 Scrambler 1971 375/20 amal 20 A1 95 12 373/3 1 105/DA

BOLOGNA FACTORY PRODUCTION ROAD RACERS Model Year Dell'Orto

type Size Needle Main Pilot Slide Needle pos.

Needle jet

98 Competizione 1955 SS1 20C 20 R4 88 50 70 3 260

125 Gran Sport 1956 SS1 20C 20 R4 80 45 70 3 260

175 Gran Sport 1957 SS1 22.5C 22.5 R4 98 50 70 3 260

175 Formula 3 1959 SS1 27A 27 M14 108 50 80 3 260

220 Grand Prix 1960 SS1 29A 29 M14 115 50 80 3 260

250 Formula 3 (Manxman) 1961 SS1 29A 29 M14 118 50 100 3 260

250 Mach 1/s 1965 SS1 30A 30 M14 132 50 60 2 260

of 28Carb jetting


Amal 375 Type Use Bore Pilot Cutaway Main Needle

Jet Position

375/001 375/002 BSA 250cc 1955-56; C10L sv 25/32" 25 3.5 120 0.11 2

375/003 375/004 BSA 250cc 1955; C11G 25/32" 25 3.5 140 0.11 3 BSA 250cc 1955; C11G with air filter 25/32" 25 3.5 100 0.11 3

BSA 250cc 1956-57; C12 25/32" 25 3.5 140 0.11 3375/005 Ariel 197cc 1955-58; LH Colt 13/16" 25 3.5 110 0.11 2375/006 Excelsior 250cc 1955-60; 2 str TT3 and TT4 25/32" 30 3 100 0.11 2 Excelsior 250cc 1955-60; 2 str STT4 Talisman Twin 25/32" 30 3 100 0.11 2

Excelsior 250cc 1955-58; STT6 25/32" 30 3 100 0.11 2375/007 Douglas 350cc 1955-59; Twin Dragonfly 15/16" 30 3.5 130 0.11 3375/008 Anzani 242cc 1955-56; Twin 2 stroke 25/32" 25 3 130 0.11 2 Greeves 242cc 1956-58; 25D Fleetwing 25/32" 25 3 130 0.11 2

Norman 242cc 1955-58 Twin Anzani 2 Str 25/32" 25 3 130 0.11 2 Tandon 242cc 1955-56;Twin 25/32" 25 3 130 0.11 2375/009 Excelsior 150cc 1955-56; Courier 2 str 7/8" 30 3.5 140 0.11 2375/010 Indian 250cc 1956-57; Fire Arrow 25/32" 25 4 120 0.11 3

Royal Enfield 250cc 1955-62; Clipper, Series 1 25/32" 25 4 120 0.11 3375/011 Panther (P&M) 250cc 1955-61; 65 Model 25/32" 30 4 120 0.11 3375/012

375/013 375/014 375/015 Motobecane 150cc 1956-57; Twin 7/8" 25 3.5 120 0.11 3375/016 Royal Enfield 250cc 1955-61; Mod C6 Crusader 7/8" 25 3.5 120 0.11 3

Royal Enfield 250cc 1955-63; Clipper, Series 2 7/8" 25 3.5 120 0.11 3375/017 Radior 175cc 1956-58 13/16" 25 3.5 120 0.11 3375/018 375/019

375/020 Excelsior 250cc 1956-58; Twin Sports STT5 & 6 7/8" 30 4 150 0.11 2 Excelsior 328cc 1957-58; Berkeley Twin 2 Str 7/8" 30 4 150 0.11 2375/021

375/022 375/023 Triumph 350cc 1958; T21 Twin 13/16" 25 3.5 110 0.11 3

375/024 Indian 250cc 1957-58; Enduro Indian & Hounds Fire Arrow 7/8" 25 3 130 0.11 3

375/025 BSA 250cc 1957-58; C11, C12 25/32" 25 3.5 140 0.11 3

375/026 Royal Enfield 250cc 1957-58; Pacific Crusader (Export) 23/32" 25 4 80 0.11 3

375/027

375/028 375/029 375/030 BSA 250cc 1957; C10L sv 25/32" 25 3.5 120 0.11 2

375/031 BSA 175cc 1957-65; D7 Bantam Super 7/8" 25 3.5 140 0.11 2375/032 Triumph 350cc 1957-61; T21 25/32" 25 3.5 100 0.11 3375/033 Ariel 247cc 1958-65; Twin 2 str "Leader" 7/8" 30 3.5 170 0.11 3 Ariel 247cc 1962-65; Twin 2 str "Arrow" 7/8" 30 3.5 170 0.11 3

375/034 BSA 250cc 1959-61; C15 Trials and Std 7/8" 25 4 140 0.11 3 BSA 250cc 1962-66; C15 Star (Home) 7/8" 25 4 140 0.11 4375/035 Triumph 500cc 1959-65; 5TA 7/8" 25 3 160 0.11 3375/036 Norton 250cc 1958-63; Jubilee Twin De-Luxe 25/32" 25 3.5 130 0.11 3

375/037 Francis Barnett 150cc 1958-61; 15T 2 Str & Plover 86 13/16" 25 3.5 110 0.11 2

Francis Barnett 150cc 1963-66; Fulmar 88, 90 & Plover 95 13/16" 25 3.5 110 0.11 2

James 150cc 1958-61; 15T 2 str 13/16" 25 3.5 110 0.11 2

of 28Carb jetting


James 150cc 1964-66; Scooter SCI & Cadet 13/16" 25 3.5 110 0.11 2375/038 375/039 BSA 175cc 1959; D7 Pastoral 7/8" 25 3 150 0.11 3375/040 BSA 175cc 1960-63; D7 Pastoral 7/8" 25 3 150 0.11 3

375/041 Excelsior 250cc 1959-60; Frisky car 25/32" 30 3.5 120 0.11 3375/042 James 150cc 1960-61; 15H 13/16" 25 3.5 110 0.11 2375/043 Norton 250cc 1958-66; Jubilee Twin Standard 25/32" 25 3.5 130 0.11 3

375/044 Triumph 200cc 1960-61; T20T Std Cub 25/32" 25 3.5 100 0.11 3 Triumph 200cc 1963-66; T20 Trials & WD 25/32" 25 3.5 100 0.11 3375/045 375/046

375/047 Norton 350cc 1961-63; Navigator Twin De-Luxe 7/8" 25 3.5 170 0.11 4375/048 Norton 350cc 1962-65; Navigator Twin Standard 7/8" 25 3.5 170 0.11 4375/049 Francis Barnett 150cc 1962; 2 Str 15T 13/16" 25 3.5 110 0.11 2375/050 BSA 175cc 1962-65; D7 Pastoral (TOO) 7/8" 25 3.5 140 0.11 2

375/051 BSA 175cc 1962-65; C15 Police Trials Pastoral 7/8" 25 4 140 0.11 4375/052 375/053 375/054 Norton 350cc 1963-65; 384EEBB, ESB & ES400 7/8" 25 3 190 0.11 4

375/055 375/056 BSA 175cc 1963-65; D7 (USA) 7/8" 25 3.5 110 0.11 2375/057 Ariel 200cc 1964-65; Arrow 13/16" 30 3.5 120 0.1 3

375/058 Royal Enfield 250cc 1964-66; Clipper & Olympic 7/8" 25 3.5 95 0.11 3375/059 375/060 BSA 175cc 1966; D7 De-Luxe and Silver Bantam 7/8" 25 3.5 100 0.11 2375/061

375/062 Triumph 350cc 1962-66; T21 & 3TA 25/32" 25 3.5 100 0.11 3


Jet Position

376/001 BSA 650cc 1955-57: A10 Golden Flash Twin (Spring Frame)

1 1/16" 25 3.5 240 0.11 3

376/002 BSA 350cc 1955-56; B31(Home) 1" 30 3.5 260 0.11 2376/003 BSA 350cc 1955-60; B31(for Air Filter) (Export) 1" 30 3.5 200 0.11 2

376/004 BSA 500cc 1955-56; A7 15/16" 25 3.5 210 0.11 2

376/005 AJS 347cc 1955-61; 16M, 16MS, 16MCS 1 1/16" 30 3.5 210 0.11 3

Matchless 347cc 1955-61; G3L, G3LS, G3LC Single 1 1/16" 30 3.5 210 0.11 3

376/006 AJS 498cc 1955-58; 20 Twin 1" 30 4 220 0.11 3 Matchless 498cc 1955-58 G9 Twin 1" 30 4 220 0.11 3

376/007 Ariel 497cc 1955-58; KH Fieldmaster Twin 1" 30 3.5 200 0.11 3

376/008 Ariel 350cc 1955-58; NH Hunter, 1957-58 HT3 "R" Hunter Trials 1" 25 3.5 200 0.11 3

376/009 BSA 500cc 1955-57; B33 (for Air Filter) (Export) 1 1/16" 25 3.5 210 0.11 3

376/010 BSA 500cc 1955-57; B33 and M33 (Home) 1 1/16" 25 3.5 260 0.11 3

376/011 Ariel 497cc 1955-59 VH Hunter 1 1/16" 30 3.5 200 0.11 3

376/012 Ariel 646cc 1955-59 FH Huntmaster Twin 1 1/16" 25 3.5 240 0.11 3

376/013 Ariel 598 cc 1955-58 VB 1" 30 5 220 0.11 2376/014

of 28Carb jetting


376/015 BSA 500cc 1955-56; A7 Shooting Star (Home and Export) 1" 30 3.5 270 0.11 3

376/016 BSA 500cc 1955; A7 Shooting Star (Export) 1" 30 3.5 270 0.11 3

376/017 Norton 500cc 1955-63; ES2, 19R 1 1/16" 30 4 270 0.11 3

Norton 596cc 1956-58; 19S 1 1/16" 30 4 270 0.11 3

376/018 Norton 500cc 1955-56; Dominator 88 Deluxe Twin 1" 30 3.5 240 0.11 2376/019 Norton 500cc 1955-56; Dominator Std Twin 1" 30 3.5 240 0.11 2376/020 376/021 BSA 500cc 1955-56; M20 (Home and Export) 1" 30 5 240 0.11 3

376/022

376/023 BSA 600cc 1955-56 M21 (Home and Export) 1 1/16" 30 5 250 0.11 2

376/024 376/025 Triumph 498cc 1955-60; 5T Speed Twin 15/16" 30 3.5 200 0.11 4376/026 376/027

376/028 376/029 Royal Enfield 350cc 1957-61; Clipper 1" 30 4 180 0.11 3 Royal Enfield 350cc 1955-57; G2 Bullet 1" 30 4 180 0.11 3

376/030 Panther 600cc 1955-56; Mod 100 1 1/16" 30 3.5 250 0.11 2

376/031 Vincent 998cc 1955; Black Knight & Rapide 1 1/16" 30 4 240 0.11 2

376/032

376/033 AJS 347cc 1955-56; 16M, 16MS, 16MC, 16MCS 1 1/16" 30 3.5 200 0.11 3

Matchless 347cc 1955-56; G3L, G3LS, G3LC 1 1/16" 30 3.5 200 0.11 3

376/034 AJS 498cc 1955-56; 20 Twin 1" 30 4 230 0.11 3 Matchless 498cc 1955; G9 Twin with Air Filter 1" 30 4 230 0.11 3

376/035 Triumph 498cc 1955-61;TR5, T100 15/16" 25 3.5 220 0.11 4376/036 Indian 500cc 1956-57; Twin Tomahawk 15/16" 25 3.5 230 0.11 2 Royal Enfield 500cc 1955-58; Twin 15/16" 25 3.5 230 0.11 2376/037 Panther 350cc 1955-66; Mod 75 1" 30 4 180 0.11 2

376/038 Anzani 325cc 1956 Twin 2Str Car 1" 25 3.5 260 0.11 2 Greeves 325cc 1955-57; 32D Fleetmaster 1" 25 3.5 260 0.11 2 Tandon 322cc 1955-56; Viscount 1" 25 3.5 260 0.11 2376/039

376/040 Triumph 650cc 1955-61; Tiger 110 1 1/16" 25 3.5 250 0.11 3

Triumph 650cc 1962-63; TR6 S/S 1 1/16" 25 3.5 250 0.11 3

376/041 Indian 692cc 1956-60; Twin Trailblazer 1 1/16" 30 3.5 240 0.11 3

Royal Enfield 692cc 1957-63; Constellation & Super Meteor Twin

1 1/16" 30 3.5 240 0.11 3

376/042 Triumph 650cc 1955-60; TR6 and 6T (Export) 1 1/16" 25 3.5 270 0.11 4

376/043 BSA 350cc 1955-57 B32 Comp Scrambler 1 1/16" 25 4 260 0.11 3

376/044 376/045

376/046 376/047 376/048 Velocette 349cc 1955-60; MAC 15/16" 25 3.5 200 0.11 3

376/049 Velocette 499cc 1955-66; MSS Endurance 1 1/16" 25 3.5 240 0.11 3

376/050 Norton 596cc 1955; 19R Twin (Export) 1 25 3 250 0.11 3

of 28Carb jetting


1/16"376/051 Norton 350cc 1956; Mod 50 1" 30 3.5 210 0.11 2376/052 376/053

376/054

376/055 Matchless 347cc 1955-57; Scrambler G3LC 1 1/16" 30 3 240 0.11 3

376/056 376/057 Anzani 325cc 1956 Twin 2Str Car, 1957 Unitwin 1" 25 3.5 260 0.11 2 Greeves 325cc 1955-57; 32D Fleetmaster 1" 25 3.5 260 0.11 2376/058 AJS 600cc 1955-57; 30 Twin 1" 30 4 260 0.11 3

Matchless 600cc 1956-57; G11 Twin 1" 30 4 260 0.11 3

376/059T AJS 350cc 1956-63; Trials 16MC, 16C 1 1/16" 30 3 210 0.107T 3

Matchless 350cc 1956-61; Trials G3LC 1 1/16" 30 3 210 0.107T 3

Matchless 348cc 1962-63; G3C 1 1/16" 30 3 210 0.107T 3

376/060

376/061 Velocette 349cc 1956-66; Viper 1 1/16" 30 3.5 270 0.11 3

376/062

376/063

376/064T Ariel 497cc 1956-58; HT5 "R" Hunter Trials 1 1/16" 30 3 200 0.106T 3

376/065

376/066 Norton 500cc 1956-63; Dominator 88 Std and Deluxe Twin 1" 30 3.5 240 0.11 2

376/067 Norton 596cc 1956-62; 77, 99 1 1/16" 25 3 250 0.11 3

376/068 Norton 350cc 1957-63; Mod 50 1" 30 3.5 210 0.11 2376/069

376/070 376/071 376/072 376/073

376/074 376/075 376/076 James 197cc 1957; Competition 2 stroke 15/16" 20 3.5 180 0.11 2376/077 Triumph 500cc 1957-60; T100 (Export) 1" 25 3.5 200 0.11 3

376/078 AJS 600cc 1957-58; 30 Twin, 30CS 1 1/16" 30 3.5 280 0.11 3

Matchless 600cc 1958; G11, G11CS, Mod 30 1 1/16" 30 3.5 280 0.11 3

376/079 Excelsior 328cc 1959-60; Berkeley Car 1" 25 4 230 0.11 2

376/080 BSA 650cc 1957-59; A10 Twin Gold Flash 1 1/16" 25 3.5 240 0.11 3

376/081 BSA 350cc 1958-59; B31 (Home) 1" 30 3.5 260 0.11 2376/082 BSA 350cc 1957-59; B31 (Export) 1" 30 3.5 200 0.11 2376/083 BSA 500cc 1957-59; A7 Twin 15/16" 25 3.5 210 0.11 2

376/084 BSA 500cc 1957-59; B33 (Export) 1 1/16" 25 3.5 210 0.11 3

376/085 BSA 500cc 1957-60; B33 and M33 (Home) 1 1/16" 25 3.5 260 0.11 3


376/087 BSA 500cc 1957-59; M20 (Home and Export) 1" 30 5 240 0.11 3

376/088 BSA 600cc 1957-61; M21 (Home and Export) 1 1/16" 30 5 250 0.11 2

376/089 BSA 650cc 1957-58; American Scrambler Twin 1 25 3.5 400 0.11 4

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1/16"

376/090 Excelsior 328cc 1957-58; Opperman Unicar Twin 2 stroke 1" 25 3.5 260 0.11 2

376/091 Excelsior 328cc 1957-58; Coronet Twin 2 stroke 1" 25 4 230 0.11 2

376/092 Indian 500cc 1958-60; Twin Tomahawk 1 1/16" 30 3.5 250 0.11 3

Royal Enfield 500cc 1957-63; Meteor Minor Twin 1 1/16" 30 3.5 250 0.11 2

376/093 Excelsior 328cc 1957-58; Berkeley Twin 2 stroke 1" 25 4 230 0.11 2376/094 Excelsior 328cc 1958; Super Talisman Twin 2 stroke 1" 25 4 230 0.11 2

376/095 AJS 600cc 1957-59; Twin LH 1 1/16" 25 3.5 220 0.11 3

Matchless 600cc 1957-59; Twin LH 1 1/16" 25 3.5 220 0.11 3

376/096 AJS 600cc 1957-59; Twin RH 1 1/16" 25 3.5 220 0.11 3

Matchless 600cc 1957-59; Twin RH 1 1/16" 25 3.5 220 0.11 3

376/097 BSA 650cc 1957-59; Twin Super Road Rocket 1 1/16" 25 3.5 250 0.11 4

376/098 Invacar 197cc 1958-60; Hawkstone Special Scrambler 1 1/16" 25 3 280 0.11 3

376/099 AJS 250cc 1959-61; No 14 1 1/16" 25 3.5 180 0.11 3

Matchless 250cc 1958-61; G2 1 1/16" 25 3.5 180 0.11 3

376/200 Excelsior 328cc 1957-60 Berkeley 3 cylinder 1" 25 4 200 0.11 3

376/201 376/202 376/203

376/204 Triumph 650cc 1959; Bonneville 120 (Chopped) 1 1/16" 25 3.5 240 0.11 2

376/205

376/206 Christorforides 350cc 1959; Twin 2 stroke 1 1/16" 20 3.5 180 0.11 3

376/207 Christorforides 350cc 1959; Twin 2 stroke 1 1/16" 20 3.5 180 0.11 3

376/208 Francis-Barnett 250cc 1958-61; Trials 2-stroke 1" 25 3.5 190 0.11 3

James 250cc 1958-59; Trials 2 stroke 1" 25 3.5 190 0.11 3376/209 AJS 500cc 1959-61; Twin 1" 30 4 220 0.11 3 Matchless 500cc 1959-61; Twin 1" 30 4 220 0.11 3

376/210 Triumph 650cc 1959; 6T Thunderbird (Home) 1 1/16" 25 3.5 270 0.11 4

376/211 BSA 500cc 1959-60: B33 Single (Export) 1 1/16" 25 3.5 210 0.11 3

376/212 BSA 500cc 1959-61 A7 Twin 15/16" 25 3.5 210 0.11 2376/213 BSA 500cc 1959-61; Shooting Star Single (Export) 1" 30 3.5 270 0.11 3

376/214 BSA 650cc 1959; A10 Twin 1 1/16" 25 3.5 240 0.11 3

376/215 Royal Enfield 350cc 1958-62; Bullet 1 1/16" 30 4 170 0.11 3

376/216 Royal Enfield 250cc 1958-63; Crusader Sports 15/16" 25 3.5 150 0.11 3

376/217 Triumph 200cc 1959-60; T20S Cub Scrambler 15/16" 20 3 140 0.11 3376/218 376/219 Norton 500cc 1959-60; Dominator 88 Twin 1" 30 3.5 240 0.11 2

376/220 Norton 596cc 1959-60; Mod 77 and 99 Twin 1 1/16" 25 3 250 0.11 3

Norton 600cc 1962; Mod 99 Sports 1 1/16" 25 3 250 0.11 3

376/221

of 28Carb jetting


376/222 BSA 250cc 1959-60; C15 Comp Scrambler 15/16" 25 3 180 0.11 2

376/223 Christorforides 350cc 1959; Twin 2 stroke 1 1/16" 20 3.5 - 0.11 3

376/224 Christorforides 350cc 1959; Twin 2 stroke 1 1/16" 20 3.5 - 0.11 3

376/225 376/226 Excelsior 150cc 1959-60; 2 stroke Single 1" 25 4 180 0.11 3

376/227 Excelsior 150cc 1959; 2 stroke Single 1" 25 4 180 0.11 3376/228 Anzani 242cc 1959 Competition "A" 1" 25 3.5 300 0.11 3

376/229 Royal Enfield 700cc 1959-60; Berkeley Twin 1 1/16" 30 3.5 240 0.11 3

376/230 376/231 Francis-Barnett 197cc 1960-66; Falcon 87 2-stroke 1" 30 3.5 180 0.11 2 James 197cc 1960-61; Model 20T 2 stroke 1" 30 3.5 180 0.11 2

James 200cc 1964-66; Captain L20, L20S 1" 30 3.5 180 0.11 2376/232

376/233 Triumph 650cc 1959; Bonneville 120 1 1/16" 25 3.5 240 0.11 2

376/234 Christorforides 350cc 1960; H3/M 1 1/16" 20 4.5 170 0.11 2

376/235 Christorforides 350cc 1960; H3/M 1 1/16" 20 4.5 170 0.11 2

376/236 Speedwell 1959-60; 1 1/16" 15 2 320 0.11 3

376/237 Speedwell 1959-60; 1 1/16" 15 2 320 0.11 3

376/238 BSA 500cc 1960-61; A7 Twin 15/16" 25 3.5 210 0.11 2


376/240 BSA 500cc 1960; B33 (Export) 1 1/16" 25 3.5 210 0.11 3

376/241 BSA 500cc 1960; B33 and M33 (Home) 1 1/16" 25 3.5 260 0.11 3

376/242 Royal Enfield 700cc 1959-61; Constellation 1 1/16" 25 4 320 0.11 3

376/243 Royal Enfield 700cc 1959-61; Constellation (Chopped)

1 1/16" 25 4 320 0.11 3

376/244 Triumph 650cc 1960; Tiger 110 1 1/16" 25 3.5 250 0.11 4

376/245 Triumph 650cc 1959-60; 6T Thunderbird (Export) 1 1/16" 25 3.5 270 0.11 4

376/246 Triumph 650cc 1959-60; 6T Thunderbird (Home) 1 1/16" 25 3.5 270 0.11 4

376/247 Norton 500cc 1960-62; Dominator 88 Twin 1" 30 3.5 240 0.11 2

376/248 Norton 596cc 1960-62; Mod 77 and 99 Twin 1 1/16" 25 3 250 0.11 3

376/249 Norton 500cc 1960; ES2 (Export) 1 1/16" 30 3.5 270 0.11 3

376/250 AJS 250cc 1959-61; Scrambler 1 1/16" 25 3 180 0.11 4

376/251 BSA 600cc 1960; M21 AA 1 1/16" 30 5 250 0.11 2

376/252 Royal Enfield 350cc 1960-61; G2 Bullit 1" 30 4 180 0.11 3

376/253 BSA 350cc 1960-62 B40 1 1/16" 20 3 190 0.11 3

376/254

376/255 Triumph 650cc 1960-61; Tiger 110 1 1/16" 25 3.5 250 0.11 4

376/256 Triumph 650cc 1960-61; 6T Thunderbird 1 1/16" 25 3.5 270 0.11 4

376/257 Triumph 650cc 1960-61; Bonneville 120 1 1/16" 25 3.5 240 0.11 2

of 28Carb jetting


376/258 BSA 250cc 1960-63; C15 Scrambler and Starfire 1 1/16" 25 3.5 240 0.11 2

376/259 Veloce 250cc 1964-65; Viceroy Scooter 1 1/16" 20 3 210 0.11 3

376/260 Triumph 650cc 1960-61; 6T Thunderbird 1 1/16" 25 3.5 270 0.11 4

376/261

376/262

376/263 Christorforides 350cc 1960; H3/M Twin 2 star 1 1/16" 20 4.5 220 0.11 2

376/264 Christorforides 350cc 1960; H3/M Twin 2 star 1 1/16" 20 4.5 220 0.11 2

376/265 376/266 Speedwell 1960; 15/16" 10 3 270 0.11 3

376/267 Speedwell 1960; 15/16" 10 3 270 0.11 3376/268 376/269 376/270 BSA 250cc 1961-65; C15 Star (USA) 1" 25 3.5 180 0.11 3

376/271

376/272 Triumph 200cc 1961; T20S/S, T20S/H & T20SL Scrambler 15/16" 20 3 140 0.11 3

Triumph 200cc 1962-66; T20S & T20SL Scrambler 15/16" 20 2.5 140 0.11 3376/273 Triumph 500cc 1961; TR5A/R/C Competition Twin 1" 25 3.5 190 0.11 3 Triumph 500cc 1962-66; T100 S/S, S/R, S/C, C/R, 5TA 1" 25 3.5 190 0.11 3

376/274 Norton 650cc 1965-66; Mod 99 (USA) 1 1/16" 25 3.5 250 0.11 3

376/275 Norton 650cc 1965-66; Mod 99 (USA) 1 1/16" 25 3.5 250 0.11 3

376/276

376/277 Ariel 247cc 1962-65; Golden Arrow & Super Sports 1 1/16" 30 3.5 230 0.11 3

376/278

376/279

376/280 BSA 350cc 1962-66 B40 (Home) 1 1/16" 20 3 190 0.11 3

376/281 BSA 250cc 1962-66; C15 Sports Star (Home) 1" 25 4 200 0.11 2

376/282 BSA 500cc 1962-65; A50 (Home) 1" 25 3.5 250 0.11 3

376/283 Royal Enfield 250cc 1963; Continental & CrusaderSuper 5

1 1/16" 25 3.5 180 0.11 4

376/284 BSA 500cc 1962-65; A50 (USA) 1" 25 3.5 260 0.11 3

376/285 Triumph 650cc 1962; 6T Thunderbird 1 1/16" 25 4 220 0.11 4

376/286 Triumph 650cc 1962-63; T120 Bonneville 1 1/16" 25 3.5 240 0.11 2

376/287 Triumph 650cc 1962-63; T120 Bonneville 1 1/16" 25 3.5 240 0.11 2

376/288 Norton 497cc 1963-66; Model 88 SS 1 1/16" 25 3.5 250 0.11 3

Norton 650cc 1963-64; Dominator Sports 1 1/16" 25 3.5 250 0.11 3

376/289 Norton 497cc 1963-66; Model 88 SS 1 1/16" 25 3.5 250 0.11 3

Norton 650cc 1963-64; Dominator Sports 1 1/16" 25 3.5 250 0.11 3

376/290 BSA 250cc 1962-65; C15 Sports Star (USA) 1 1/16" 25 3.5 210 0.11 2

376/291

376/292

376/293 DOT 250cc 1962; Trials 1 1/16" 20 3.5 400 0.11 3

376/294 Norton 750cc 1962-66; Atlas Std 1 20 3.5 400 0.11 4

of 28Carb jetting


1/16"

376/295 BSA 250cc 1962-63; C15 Scrambler (Home) 1 1/16" 25 3.5 240 0.11 2

376/296 Villiers 197cc 1962; 9E Super Sports 1 1/16" 30 3 290 4

376/297 Royal Enfield 250cc 1962; Crusader 1 1/16" 25 3.5 320 0.11 3

Royal Enfield 350cc 1963; Bullet 1 1/16" 25 3.5 220 0.11 3

376/298 376/299

376/300 Triumph 350cc 1963-66; Tiger90 15/16" 20 3 180 0.11 3376/301

376/302 Triumph 650cc 1963 T120R Johnson Motors 1 1/16" 25 3.5 240 0.11 2

376/303 Triumph 650cc 1963-66; 6T Thunderbird 1 1/16" 25 4 220 0.11 4

376/304 BSA 250cc 1963-65; C15 Scrambler 1 1/16" 25 3.5 190 0.11 2

376/305 376/306

376/307

376/308 Royal Enfield 350cc 1963; Crusader Export 1 1/16" 25 3.5 180 0.11 3

376/309 Triumph 650cc 1964-66; 6T Thunderbird (USA) 1 1/16" 25 4 270 0.11 4

376/310 BSA 500cc 1964-65; A50 Cyclone (USA) 1 1/16" 25 3.5 170 0.11 2

376/311 Royal Enfield 250cc 1964-65; Continental 1 1/16" 25 3.5 170 0.11 4

376/312 Royal Enfield 350cc 1964-66; Bullet 1 1/16" 25 3.5 160 0.11 3

376/313 Royal Enfield 250cc 1964-66; Crusader Sports 15/16" 25 3.5 130 0.11 3376/314 Triumph 200cc 1965-66; T20SM 15/16" 15 3.5 140 0.11 3

376/315 Royal Enfield 250cc 1965; Continental GT 1 1/16" 25 3.5 180 0.11 4

376/316 BSA 500cc 1964-65; A50 Cyclone 1 1/16" 25 3.5 170 0.11 2

376/317 Norton 650cc 1965-66; Sports Special 1 1/16" 25 3.5 270 0.11 3

376/318 Norton 650cc 1965-66; Sports Special 1 1/16" 25 3.5 270 0.11 3

376/319 BSA 500cc 1966; A50 Royal Star (USA) 1" 25 3.5 260 0.11 3

376/320 Royal Enfield 250cc 1965; Continental GT (USA) 1 1/16" 25 3.5 150 0.11 3

376/321 BSA 500cc 1966; A50 Royal Star 1" 25 3.5 260 0.11 3

376/322 Greeves 250cc 1966; Trials TGS 1 1/16" 25 3 190 0.105T 3


Jet Position

389/001 AJS 498cc 1955-59; 18, 18S, 18C 1 5/32" 30 3.5 260 0.11 3

Matchless 498cc 1955-59; G80, G80S Single. 1 5/32" 30 3.5 260 0.11 3

389/002 389/003

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389/004 389/005 389/006

389/007 AJS 498cc 1955-56; 18, 18S, 18C, 18CS 1 5/32" 30 3.5 250 0.11 3

Matchless 498cc 1955-56; G80, G80s with air filter 1 5/32" 30 3.5 250 0.11 3

389/008 BSA 500cc 1955-58; B34 Competition 1 1/8" 25 3 240 0.11 2389/009 Indian 500cc 1956-60; Woodsman 500 1 1/8" 30 3.5 200 0.11 2 Royal Enfield 500cc 1955-60; JS Bullet 1 1/8" 30 3.5 200 0.11 2389/010 Vincent 998cc 1955; Black Prince & Black Shadow 1 1/8" 30 4 280 0.11 3

389/011 Ariel 497cc 1956-58; HS "R" Hunter Scrambles 1 3/16" 30 3.5 380 0.11 3

389/012 AJS 498cc 1958-61; Scrambler 18CS Single 1 3/16" 30 3 440 0.11 3

AJS 498cc 1966; Model 18CS Single 1 3/16" 30 3 440 0.11 3

Matchless 498cc 1955-61; G80C, G80CS 1 3/16" 30 3 440 0.11 3

Matchless 500cc 1965-66; G80CS 1 3/16" 30 3 440 0.11 3

389/013 BSA 500cc 1956-63; B34 Comp Gold Star Scrambler 1 5/32" 25 3 320 0.11 2

389/014

389/015 Velocette 499cc 1956-66; Venom 1 3/16" 30 3.5 330 0.11 4

389/016 Indian 692cc 1958-60; Trailblazer Twin 1 1/8" 30 3.5 270 0.11 2 Royal Enfield 700cc 1957-61; Super Meteor Twin 1 1/8" 30 3.5 270 0.11 2

389/017 Francis Barnett 250cc 1957; 2 stroke Cruiser 80 1 1/8" 30 3 420 0.11 2 James 250cc 1957-58; 2 stroke Commodore 1 1/8" 30 3 420 0.11 2389/018 AJS 347cc 1957-59; 16MCS Scrambler 1 1/8" 30 280 3 0.11 3 Matchless 347cc 1958-59; G3LC Scrambler 1 1/8" 30 280 3 0.11 3

389/019

389/020 Indian 500cc 1957-58; Indian Woodsman Std 1 3/16" 30 4.5 220 0.11 3

389/021 Panther (P&M) 600cc 1957-66; 100 Springer, Rigid Std & DeLuxe 1 1/8" 30 3.5 280 0.11 2

389/022 AJS 650cc 1957-59; G12 Twin 1 1/8" 30 3 400 0.11 3

389/023 DKW 900cc 1956-57; 3 - cylinder 1 3/16" 30 3 400 0.11 3

389/024 Elva Engineering 1959 1 1/8" 30 3 270 0.11 3389/025 Elva Engineering 1959 1 1/8" 30 3 270 0.11 3389/026

389/027 Francis Barnett 249cc 1958-63; 2 stroke Cruiser 80 1 1/8" 30 3.5 320 0.11 2 James 250cc 1957-61; 2 stroke Commodore 1 1/8" 30 3.5 320 0.11 2389/028 Francis Barnett 249cc 1958-59; Scrambler 82 & 25S 1 1/8" 30 4 290 0.11 2389/029 AJS 650cc 1959; G12 Twin 1 1/8" 30 3 400 0.11 3

Matchless 650cc 1959; G12 Twin 1 1/8" 30 3 400 0.11 3

389/030 Greeves 197cc 1958-60; Scrambler (Vale-Onslow) 1 3/16" 30 3 440 0.11 3

389/031 BSA 650cc 1959-60; Road Rocket Twin (Export) 1 1/8" 30 3.5 290 0.11 3

389/032 Dot 197cc 1960; Scrambler 1 3/16" 30 3 390 0.11 3

389/033 Panther (P&M) 600cc 1958-61; M100 American & M120 1 5/32" 30 3 280 0.11 4

Panther (P&M) 600cc 1962-63; Model 120 1 5/32" 30 4 280 0.11 2

389/034 Royal Enfield 500cc 1959-62; Bullet 1 3/16" 30 3.5 230 0.11 3

389/035 BSA 500cc 1959-60; Gold Star Scrambler (Export) 1 5/32" 25 3 320 0.11 2

of 28Carb jetting


389/036 BSA 650cc 1958-59; Road Rocket Twin (Home) 1 1/8" 30 3.5 290 0.11 3

389/037 BSA 650cc 1958-59; Road Rocket Twin (Home) less air filter 1 1/8" 30 3.5 400 0.11 3

389/038 Francis Barnett 249cc 1959; 2 stroke Cruiser 80 1 1/8" 30 3.5 320 0.11 2

James 250cc 1959; Commodore 1 1/8" 30 3.5 320 0.11 2

389/039 Villiers 1959-60 1 3/16" 30 3 560 0.11 5

Villiers 247cc 1962-64; 33A, 34A, 36A 1 3/16" 25 3.5 370 0.11 3

389/040

389/041 Royal Enfield 700cc 1959-62; Constellation 1 3/16" 30 3.5 300 0.11 2

389/042 AJS 350cc 1960-61; Lightweight 1 1/8" 25 3.5 220 0.11 3389/043 Speedwell 1959 1 /8" 15 3 550 0.11 3

389/044 Speedwell 1959 1 1/8" 15 3 550 0.11 3389/045 BSA 650cc 1960-61; A10 Gold Flash Twin 1 1/8" 30 3.5 250 0.11 3

389/046 BSA 650cc 1960-63; A10 Super Road Rocket 1 5/32" 25 3 420 0.11 2

389/047 BSA 650cc 1959-63; Road Rocket & Spitfire (Export) 1 5/32" 25 3 290 0.11 2

389/048 BSA 650cc 1960-61; A10 Gold Flash (Export) 1 1/8" 30 3.5 250 0.11 3

389/049 Matchless 650cc 1960-61; G12CS, G12CSR, 31CS, 31CSR 1 1/8" 20 4 450 0.11 4389/050 AJS 650cc 1960-61; Model 31 1 1/8" 20 4 390 0.11 4

Matchless 650cc 1960-61; G12, G12DL, 31, 31DL Touring Model 1 1/8" 20 4 390 0.11 4

389/051 Triumph 650cc 1960; Bonneville 120 1 3/16" 30 3 310 0.11 3

389/052 AJS 498cc 1960-61; 18, 18S, 18C 1 5/32" 25 3.5 300 0.11 3

Matchless 500cc 1962-63; G80 1 5/32" 25 3.5 300 0.11 3

389/053 Villiers 250cc 1960 1 3/16" 30 3 480 0.11 4

Greeves 246cc 1963; Motocross 24 MD 1 3/16" 25 3.5 370 0.11 3

389/054 Villiers 1960 1 3/16" 30 3 560 0.11 5

Cotton 1966; Cobra Scrambler and Conquest Tourer 1 3/16" 20 3.5 370 0.11 3

Francis Barnett 250cc 1966; Scrambler 94 1 3/16" 20 3.5 370 0.11 3

James 250cc 1966; Cotswold M25S 1 3/16" 20 3.5 370 0.11 3

Villiers 247cc 1964-66; Starmaker Scrambler 1 3/16" 20 3.5 370 0.11 3

389/055 Royal Enfield 700cc 1960-61; Constellation 1 3/16" 30 3.5 380 0.11 3

389/056 Royal Enfield 700cc 1960-61; Constellation (Chopped) 1 3/16" 30 3.5 380 0.11 3

389/057 Royal Enfield 350cc 1960-61; Bullet (American) 1 3/16" 30 4 260 0.11 3

389/058

389/059 Invacar 197cc 1960; Hawkstone Special Scrambler 1 3/16" 30 3 440 0.11 3

389/060

389/061 BSA 500cc 1963; B34 Scrambler (USA) 1 3/16" 30 4 320 0.11 4

389/062 389/063 Villiers 197cc 1962-63; 9E Super Sports 1 1/8" 30 3 290 0.11 4389/064

389/065 Greeves 246cc 1963-65; Motocross 24 MDS 1 3/16" 25 3.5 380 0.11 4

of 28Carb jetting


Greeves 246cc 1964; Motocross 24 MA 1 3/16" 25 3.5 380 0.11 4

Greeves 246cc 1963; Trials 24 INT 1 3/16" 25 3.5 380 0.11 4

389/066 389/067 BSA 650cc 1962-65; A65 (Home) 1 1/8" 25 3.5 300 0.11 3389/068 AJS 348cc 1962-63; Model 8 & 16 1 1/8" 25 3.5 230 0.11 3

Matchless 348cc 1962-63; G5, G3, G3S 1 1/8" 25 3.5 230 0.11 3389/069 389/070 BSA 650cc 1962-63; A65 (USA) 1 1/8" 25 3 310 0.11 2389/071 Norton 647cc 1962-63; Dominator Standard 1 1/8" 25 3 320 0.11 2

389/072 Norton 647cc 1962; Dominator Deluxe 1 1/8" 25 3 320 0.11 2389/073 AJS 646cc 1962-65; Twin Speed Kit & Model 31CSR 1 1/8" 25 3 280 0.11 4

Matchless 646cc 1962-66; Twin Speed kit & G12CSR (USA) 1 1/8" 25 3 280 0.11 4

389/074 AJS 646cc 1962-65; Twin Speed Kit & Model 31CSR 1 1/8" 25 3 280 0.11 4

Matchless 646cc 1962-66; Twin Speed kit & G12CSR (USA) 1 1/8" 25 3 280 0.11 4

389/075

389/076 DOT 250cc 1962-65; Scrambler 1 3/16" 20 3 490 0.11 1

389/077 Matchless 750cc 1962; G15 Twin 1 1/8" 20 4 410 0.11 4

389/078 BSA 350cc 1962-63; B40 (USA) 1 1/8" 30 3.5 160 0.11 3389/079

389/080 BSA 650cc 1962-63; A10 Gold Star (Home) 1 5/32" 25 3 420 0.11 2

389/081 BSA 650cc 1962; A10 Gold Star (USA) 1 3/16" 30 4 440 0.11 2

389/082 AJS 248cc 1962-66; Model 14CSR 1 1/8" 20 3 200 0.11 3

Matchless 248cc 1962-66; G2, G2S, G2CSR 1 1/8" 20 3 200 0.11 3389/083 BSA 350cc 1962-65; B40, SS90 1 1/8" 30 3.5 200 0.11 3389/084

389/085 Royal Enfield 750cc 1963; Interceptor 1 3/16" 25 3.5 380 0.11 3

389/086 Royal Enfield 750cc 1963; Interceptor 1 3/16" 25 3.5 380 0.11 3

389/087 AJS 750cc 1965; Model 33 & 33P 1 1/8" 20 3 420 0.11 3 Matchless 750cc 1964-65; G15 P 1 1/8" 20 3 420 0.11 3 Matchless 750cc 1965; G15 1 1/8" 20 3 350 0.11 3 Norton 750cc 1963-64; Atlas Sports 1 1/8" 20 3 420 0.11 3

389/088 AJS 750cc 1965; Model 33 & 33P 1 1/8" 20 3 420 0.11 3 Matchless 750cc 1964-65; G15 P 1 1/8" 20 3 420 0.11 3 Matchless 750cc 1965; G15 1 1/8" 20 3 350 0.11 3

Norton 750cc 1963-64; Atlas Sports 1 1/8" 20 3 420 0.11 3389/089 Greeves 250cc 1963; Motocross Special ME 1 1/8" 30 3 290 0.11 5 Villiers 197cc 1962-63; 9E Super Sports (pair) 1 1/8" 30 3 290 0.11 5389/090 Greeves 250cc 1963; Motocross Special ME 1 1/8" 30 3 210 0.11 3

Villiers 197cc 1962-63; 9E Super Sports (pair) 1 1/8" 30 3 210 0.11 3389/091 AJS 646cc 1962-66; Model 31 1 1/8" 20 4 390 0.11 4 Matchless 646cc 1962-66; G12 1 1/8" 20 4 390 0.11 4389/092 AJS 646cc 1962-66; Model 31CSR 1 1/8" 20 4 450 0.11 4

Matchless 646cc 1962-66; G12CSR 1 1/8" 20 4 450 0.11 4389/093 Matchless 750cc 1963; G15 Twin 1 1/8" 20 4 410 0.11 4

389/094 BSA 650cc 1963; A10 Super Rocket Gold Star 1 5/32" 25 3 310 0.11 2

389/095 Triumph 650cc 1963-66; T120C Johnson Bros 1 3/16" 25 4 330 0.11 2

Triumph 650cc 1965-66; T120 TT Triumph Corp 1 3/16" 25 4 330 0.11 2

P age 25 of 28Carb jetting


389/096 389/097 Triumph 650cc 1964-66; Police Model TR6 1 1/8" 25 3.5 310 0.106T 1389/098 Villiers 247cc 1963-65; Starmaker 1 1/8" - 3 430 0.11 3389/099 Villiers 247cc 1963-66; Starmaker 1 1/8" 30 3 460 0.11 5

389/200 DOT 250cc 1965-66; Trials 1 3/16" 15 4.5 360 0.11 3

389/201 BSA 650cc 1963-65; A65 Rocket (Home) 1 1/8" 25 3.5 300 0.11 3389/202 BSA 650cc 1963-65; A65 Rocket (USA) 1 1/8" 25 3.5 310 0.11 3389/203 Triumph 650cc 1964-66; T120R (USA) 1 1/8" 20 3 260 0.11 3389/204

389/205 Royal Enfield 750cc 1964-66; Interceptor 1 3/16" 25 3.5 380 0.11 3

689/205 Royal Enfield 750cc 1964-66; Interceptor 1 3/16" 25 3.5 380 0.11 3

389/206 BSA 650cc 1964-65; A65 Rocket Gold Star 1 1/8" 25 3.5 220 0.11 3 BSA 650cc 1965; A65L Lightning 1 1/8" 25 3.5 220 0.11 3

389/207 Cotton 1963-65; Cougar Scrambler 1 3/16" 30 3 480 0.11 3

389/208 AJS 348cc 1964-66; Model 16 1 1/8" 25 3 260 0.11 3 Matchless 350cc 1964-66; G3 1 1/8" 25 3 260 0.11 3 Norton 348cc 1966; Model 50 Mk II 1 1/8" 25 3 260 0.11 3

389/209 AJS 500cc 1964-66; Model 18 1 1/8" 25 3.5 290 0.11 3 Matchless 500cc 1964-66; G80 1 1/8" 25 3.5 290 0.11 3 Norton 490cc 1966; ES2 Mk II 1 1/8" 25 3.5 290 0.11 3

389/210 Matchless 750cc 1964-65; G15 CS (USA) 1 1/8" 20 3 380 0.11 3 Norton 750cc 1964; N15CS 1 1/8" 20 3 380 0.11 3389/211 Matchless 750cc 1964-65; G15 CS (USA) 1 1/8" 20 3 380 0.11 3 Norton 750cc 1964; N15CS 1 1/8" 20 3 380 0.11 3

389/212 Greeves 200cc 1963-65; Scrambler 20 MDS 1 3/16" 25 3 460 0.11 3

389/213 Triumph 650cc 1964-66; Metropolitan Police Mk III 1 3/16" 25 3.5 320 0.106T 2

389/214 Greeves 246cc 1964-65; Scrambler 24 MX1, MX2, 24 INT 1 3/16" 25 3.5 350 0.106T 2

Greeves 250cc 1966; 24 MX3 Challenger 1 3/16" 25 3.5 350 0.106T 2

389/215 389/216 389/217 Royal Enfield 250cc 1965-66; GT Model 1 1/8" 30 3.5 260 0.11 3

389/218 Norton 750cc 1965; Atlas 1 1/8" 20 3 350 0.11 3389/219 Norton 750cc 1965; Atlas 1 1/8" 20 3 350 0.11 3389/220

389/221 BSA 441cc 1965-66; B44 Victor Grand Prix 1 5/32" 25 3.5 260 0.11 3

389/222 AJS 750cc 1965; Model 33CSR 1 1/8" 20 3 360 0.11 3 Matchless 750cc 1965; G15CSR 1 1/8" 20 3 360 0.11 3

389/223 AJS 750cc 1965; Model 33CSR 1 1/8" 20 3 360 0.11 3 Matchless 750cc 1965; G15CSR 1 1/8" 20 3 360 0.11 3

389/224 Dot 250cc 1965-66; Scrambler 1 3/16" 15 4.5 480 0.11 3

389/225 Royal Enfield 750cc 1965-66; Interceptor 1 3/16" 30 3 400 0.11 3

389/226 Royal Enfield 750cc 1965; Interceptor (police) 1 3/16" 25 3.5 360 0.11 3

389/227 BSA 500cc 1966; A50 Wasp 1 1/8" 25 3.5 200 0.11 2689/227 BSA 500cc 1966; A50 Wasp 1 1/8" 25 3.5 200 0.11 2

389/228 BSA 650cc 1966; A65 Lightning & Hornet 1 5/32" 25 3 270 0.11 3

of 28Carb jetting


Links

Amal 375/376/389 Monobloc applications New Amal carbs: http://www.amalcarb.co.uk/ from Burlen Fuel Systems Amal parts list from Burlen Fuel Systems Dellorto tuning guide: http://www.ducatimeccanica.com/dellorto_guide/dellorto.html All about Dellorto carbs: http://www.motorcyclecarbs.com/dellorto/dellortocarbs.htm Beedspeed - has Amal, Mikuni, and Dellorto breakdown pictures: http://beedspeed.com/html-pages/CARB.htm http://www.prirace.com/heavybreathing.htm Factory Pro's guide to tuning CV carbs: http://www.factorypro.com/tech/carbtun.html Dellorto needle chart: http://www.ducatimeccanica.com/needles.html




389/230 BSA 500cc 1966; A50 Wasp (USA) 1 1/8" 25 3.5 190 0.11 2

689/230 BSA 500cc 1966; A50 Wasp (USA) 1 1/8" 25 3.5 190 0.11 2389/231 389/232 389/233 BSA 650cc 1966; A65 Thunderbolt 1 1/8" 25 3.5 300 0.11 3

389/234 BSA 650cc 1966; A65 Thunderbolt (USA) 1 1/8" 25 3.5 310 0.11 3

389/235 BSA 441cc 1966; B44 Victor Enduro 1 5/32" 25 3.5 330 0.11 3

389/236 Norton 750cc 1966; Atlas (Export) 1 1/8" 20 3 350 0.11 3689/236 Norton 750cc 1966; Atlas (Export) 1 1/8" 20 3 350 0.11 3389/237 AJS 750cc 1966; Model 33CS 1 1/8" 20 3 380 0.11 3 Matchless 750cc 1966; G15CS 1 1/8" 20 3 380 0.11 3

Norton 750cc 1966; N15CS 1 1/8" 20 3 380 0.11 3689/237 AJS 750cc 1966; Model 33CS 1 1/8" 20 3 380 0.11 3 Matchless 750cc 1966; G15CS 1 1/8" 20 3 380 0.11 3 Norton 750cc 1966; N15CS 1 1/8" 20 3 380 0.11 3

389/238 389/239 389/240

389/241 Matchless 750cc 1966; G15P 1 1/8" 20 3 420 0.11 3 Norton 750cc 1966; Atlas 1 1/8" 20 3 420 0.11 3689/241 Matchless 750cc 1966; G15P 1 1/8" 20 3 420 0.11 3 Norton 750cc 1966; Atlas 1 1/8" 20 3 420 0.11 3

389/242 AJS 750cc 1966; Model 33CSR 1 1/8" 20 3 360 0.11 3 Matchless 750cc 1966; G15CSR 1 1/8" 20 3 360 0.11 3689/242 AJS 750cc 1966; Model 33CSR 1 1/8" 20 3 360 0.11 3 Matchless 750cc 1966; G15CSR 1 1/8" 20 3 360 0.11 3

Norton 750cc 1966; Atlas 1 1/8" 20 3 420 0.11 3

689/xxx Indicates RH carburettor (Floatbowl mounted on opposite side)

of 28Carb jetting


of 28Carb jetting


jetting - wisecycleworks.comwisecycleworks.com/docs/jetting.pdf · Carb jetting for Amal, Mikuni,...

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Transcript of jetting - wisecycleworks.comwisecycleworks.com/docs/jetting.pdf · Carb jetting for Amal, Mikuni,...