Can a roller cam break in on a flat tappet?
While break-in damage on a flat tappet is obvious, roller cam break-in damage may take a few thousand miles to fully fail. Proper procedure and oil is essential.
Can you use old lifters on roller tappet cams?
You can use new lifters on a good used cam, but never try to use used lifters on a new cam. Roller tappet cams don’t require any break-in.
What makes a flat tappet camshaft failure?
An unforgiving nature and high spring pressures make flat tappet camshafts the star of cam failures. Failure to follow the proper break-in procedures is a recipe for…well, failure. Since flat tappets are metal cylinders that ride directly on the cam lobe, a properly-formulated break-in oil is essential.
What kind of oil to use on roller tappet cams?
Use only the moly paste that is included with the cam from the manufacturer. This moly paste must be applied to every cam lobe surface, and to the bottom of every lifter face of all flat tappet cams. Roller tappet cams only require engine oil to be applied to the lifters and cam.
While break-in damage on a flat tappet is obvious, roller cam break-in damage may take a few thousand miles to fully fail. Proper procedure and oil is essential.
You can use new lifters on a good used cam, but never try to use used lifters on a new cam. Roller tappet cams don’t require any break-in.
An unforgiving nature and high spring pressures make flat tappet camshafts the star of cam failures. Failure to follow the proper break-in procedures is a recipe for…well, failure. Since flat tappets are metal cylinders that ride directly on the cam lobe, a properly-formulated break-in oil is essential.
What should the spring pressure be on tappet cams?
Normal recommended spring seat pressure for most mild street-type flat tappet cams is between 85 to 105 lbs. More radical street and race applications may use valve spring seat pressure between 105 to 130 lbs. For street hydraulic roller cams, seat pressure should range from 105 to 140 lbs.