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      01-18-2019, 01:01 PM   #104
Pep423
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Drives: 2011 335d M-Sport
Join Date: Dec 2015
Location: Chi Burbs

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Quote:
Originally Posted by bagman View Post
I once bought a Buick V6 with a bad harmonic balancer that destroyed the main bearings. You might want to look yours over closely. And I think when they make an engine, they bolt the unmachined main caps to the unmachined main saddles, torque them to spec, and then line bore for the main bearings. They number the caps so if it's ever disassembled the caps go back on the saddle it was machined with.
My harmonic balancer was replaced by the dealer after they thought that is what was making the noise in the first place. It doesn't look that bad to me. Iv seen much worse condition others have posted of their pulley.
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