Quote:
Originally Posted by Partee Racing LLC
Just to be super clear: This is all open for serious debate and analysis. As engine builders, however, we have to be prophylactic and risk-averse. So when we see nearly 100% of the blown S65s coming our way with rod bearings with greater than stock clearance, we feel compelled to address it as we have. Just wanted to share that with the group. Do with it as you please!
--Peter
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Are the bearings the root cause though? Bearings will seize as a side effect of oil starvation for example, which could be addressed with a baffled oil pan. That solution doesn’t seem commonly discussed for E9x M3’s. Overheating is another factor, so a failed Tstat or old radiator hardware could be a cause.
Do you know what other variables were at play with the engines you’ve serviced? I’m not knocking changing oil pump gears, I just want to learn more.