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#41005

John Mulvihill
Participant

Hi Glenn,

 

Not Walt, but here is my opine.

I usually tear things apart at 6 hours (road racing).   If I find that the ball bearings are no longer mirror shiny, I replace (usually).   I also go 12 hours on the crank pin roller bearing unless it looks funky or the rod looks like it has run hot.

 

John