Quote:
Originally Posted by Hacksaw
Back on op: Any other theories on needle bearing lifter failures?
|
I have seen problems with lifters do to excessive lifter bore clearance no one seems to measure lifters and lifter bores just buy them and dump them in LOL
I seen where they have seized in the bore because not enough clearance.
Like I have posted before i have pretty much have gone to all .904 roller lifters in most of my builds and alot of the blocks I prep are machined for .904 and no problems.
No blocks go out the door with out having lifters in hand and lifter bores are honed to fit the lifters.
Had a guy last week where I priced out a Dart Little-M block roller cam bearings, Dry sump ETC. had Comp lifters told him those are to small and would probably need to bush the bores back to standard. He told me they measured .842 my reply was never seen a set of Comp lifters to OEM size yet. He would not send the lifters so I passed on the job and he was pissed at me.
https://www.facebook.com/cncblocks.n...79?pnref=story
Here is a good video on different lifters and bore clearance