REGRINDING CAMS AND LIFTERS

REGRINDING CAMS AND LIFTERS

I do not recommend using reground cams

I do not recommend using reground lifters

ROLLER CAM AND LIFTERS

ROLLER CAM AND LIFTERS

Roller lifters can accept higher lift rate without wear

Roller lifters reduce valve train friction Roller lifters must have a way of keeping

them from turning

ROLLER CAM AND LIFTERS

ROLLER CAM AND LIFTERS

Roller Cams are made of steel (not cast iron)

Roller Cams have more agressive Profiles Lobes are polished to a fine matte finish After break-in, the lobe has a mirror

finish

CAM DRIVESCAM DRIVES

The Camshaft is Driven by the Crankshaft

Cam is driven at one half Crank speed Gear Chain and Sprockets Belt and sprockets

CAM DRIVES - GEARSCAM DRIVES - GEARS

Cam gear is soft - Fiber or Aluminum• Are press fit to cam - Pre-heat to 200 degrees

to install Crank gear - Steel Advantages - Less wear and Backlash Disadvantages - Takes more space and

can be noisey

SPROCKETSSPROCKETS

Used with chains can be made of Steel Iron Aluminum (Nylon coated teeth) - can

stick oil pump relief valve Do Not use a worn Sprocket with a New

Chain

TIMING CHAINSTIMING CHAINS

Roller Chain (bicycle style) Silent Chain - 2 styles Small Pin - Stiff Large Pin - Limp

TIMING BELTSTIMING BELTS

Cogged Belt Drive Advantages Lighter, Quieter, Easier to

Change Virtually no streach in service Watch rib tooth shape - Rounded or

Square

TIMING BELTSTIMING BELTS

Replacement 30,000 to 60,000 miles