Quote:
Originally Posted by lemming
Oh.
I thought s54 obviously. And in the later years BMW did running updates to this engine so it lessens the earlier issues with remain rod bearing wear? Was that just oil starvation? Or was it the bearing material?
|
All the famous failures were caused by defective bearings that were too tight. BMW runs their clearances extremely tight according to most engine builders, so a slightly too tight bearing results in engine failure as there is no margin of safety whatsoever.
I’ve installed slightly wider clearance bearings in mine, which seems to help.