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      03-11-2026, 07:31 AM   #41
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Drives: E39 M5, E46 M3, E92 M3, F82 M4
Join Date: Dec 2024
Location: Danville, VA

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Quote:
Originally Posted by Chrisyphus View Post
It's not that the bearings are causing the issue- they are just further exposing another weak link.

Realistically, the BE clearances are optimal. It just seems to us that the oil pump is incapable of keeping up with the increased oil flow demands.
To be nitpicky, even with Chris: We actually strive for clearances a tenth or two larger than BE, with BE's typical .0022" being the least amount of tolerable clearance.

And the No. 1 main bearing is a different kettle of fish altogether, requiring at least .003" of clearance.

--Peter
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