Lightest solid roller lifter

[James L Miller]

Originally Posted by carl hinkson

Those lifters mentioned if you are putting them in a .844 lifter bore they are to small.

Comps, Crowers and ISKY"s are .8405 to .8415 in that area and to put them in a GM lifter bore that is .844 and more so on the old blocks with short lifter bores. Running lifters in a bore with .003 clearance lifters are not happy and will show it as they looked scuff because they are using the bottom of the lifter as a cutting tool.

Morel seems to be to OEM size whether its a .842, .874 or .904

When machining for roller lifters I measure I measure each lifter and make sure bores are machined accordingly.

My engine guy in Tampa ran into that issue with the .904" lifters in Mopar engines. He said the lifter bores were originally .9050" to .9058". The lifters were .9040"-.9045".. Now the lifters tend to be sized for a .904" bore. He finds a lot of leakage of oil like what was in that video.