[Steve C.]

Take this information with a grain of salt ! And further, this should be in the street section.
But like the above post another tid bit here for conversation.....

Years ago during a conversation with a Crower rep I mentioned that my car at the time was street driven only, typically weekends on occasions, and it often sat in the garage not driven.
This conversation was after I had bushed lifter failure. I mentioned our routine of monitoring spring pressure using a on the head valve spring tester and checking the valve lash.
We found no indication of issues with either.

Nothing was resolved as to why and not claiming this was the reason for the failure, but he did point out the following to me.
And with this in mind he suggested I go back to a needle bearing lifter for my particular application.

From the internet, not a quotation from Crower....

"Unlike needle bearings, which rely on tight clearances to naturally trap oil, bushing-style (bushed) lifters feature a larger surface-to-surface clearance that allows oil to drain out when the engine sits unused for extended periods"


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