Quote:
Originally Posted by Helmsman
Thanks Green-Eggs, how interesting! Yeah certainly seems to be on the (extremely) tight side and assumingly a good reason to the wear issues we see. BMW engineering certainly been around so bit of a mystery.
These numbers also make me curious about your own measurement of BMWs shell which comes out with quite a bit more clearance?
Nominal Rod Bearing Clearance 0.0381mm
Bearing Clearance Variance 0.0292 - 0.0508mm
Just trying to understand what we're comparing here.
Thanks
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This is just the data, no other comparisons are implied. We'll leave that to others to discuss and debate.
One thing about those numbers, you' pulled them from the 702 bearings, not the 088 bearings. Since these specs just appeared 10+ years later, we have no idea whether they are for both bearings or not. My personal opinion is that the specs between 088 and 702 bearings didn't change. I know that goes against the general opinions of others. I think those measurement differences are rather insignificant. 0.5/10000 to 2/10000 of an inch difference between paper specs and measured specs is pretty insignificant IMO.