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      11-26-2025, 11:06 AM   #9
a5m
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Drives: 2011 BMW E90 M3
Join Date: Jan 2023
Location: Chitown

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Quote:
Originally Posted by BenFenner View Post
Sure, but don't forget they are the ones who gave us the flawed design to begin with*. And recognise they only really have to worry about things mostly lasting through the warranty period and have much more incentive to shave costs wherever possible. That is an engineers job after all—to make a bridge as cheaply as possible given the constraints. We as enthusiasts modifying our cars of course have different motivations and budgets. We should learn from them where we can, but they are not gospel.


*Okay to give them the benefit of the doubt, maybe the engineer(s) intended the stock covers to be replaced with the valve cover gaskets, but upper management at BMW decided not to issue a part number for them on their own.
Firstly, I'm a champion of nitpicking also, so you summed it up nicely about feeling good about a decision when one goes into that level of detail

Thanks for answering all my questions. Yes I did notice the openings in the covers and wondered if it'd be best to install them in a particular orientation to maintain stock like oil flow.

I follow what you're saying. So that makes me wonder, how did you determine the windage rankings when comparing to stock? I noticed while the other columns had a 'Stock' designation, Windage did not. Is None equal to Stock? Or is that undetermined so the rankings are best estimates?

Last edited by a5m; 11-26-2025 at 11:08 AM..
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