Cstraub

iTrader: (1)

Morel sent me 15 photos of "defective" lifters that were sent in for warranty. When Morel designed their hyd rollers in 2002 they found that running a tighter tolerance on the valving to ID of the body would allow for higher continued RPM levels. That tolerance is a minimum of .0001" to .0002".

Now if you your tolerance is in 10th's how can the lifter function when it has this in it? I had an old machinest once tell me swap the L and F in LiFter and you have FiLter.

thunderstruck507

iTrader: (18)

So are you saying is this an issue due to an install that isn't clean enough (maybe debris entering the head/block during head install) or a problem with the LS oiling system/ oil filter being used?

Cstraub

iTrader: (1)

That is out of 1 lifter. Clean engine is a happy engine. In this case the lifter was said to be defective. The debris created issue, the lifter is not defective.

Cstraub

iTrader: (1)

this is a set of .903" hyd roller lifters and that is bronze lifter bore bushing material in the bottom.