[Steve C.]

I've had two separate solid roller lifter failures that involved one lifter each time, both with the same .4300" lobe lift w/1.65 ratio and same Crower Cutaway Severe-Duty roller lifters with HIPPO pin oiling. One had needle bearings and the other bushing-style. We did not suspect either failure had anything to do with the lack of 100 percent oil flow thru the HIPPO system. Regarding that situation some suggest no issue if the needle bearings don't get oil flow 100 percent of the time under pressure, including the opinion of Crower when I called them years ago regarding the subject. That said, Crower tends to cover their ass on many issues. Agree, lots of oil splashing that is commonly called 'splash lube' but it was Mark at Luhn Performance who commented on the subject with a car at idle in a street application.

And a fwiw, after the first failure we modified the lifter bore with the groove like Paul Carter does so my lifters involving the second failure did see 100 percent oil flow to the bushed bearing thru the HIPPO system.


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