[Proctor750]

Originally Posted by chmura

Looks like just 1 person with an M2c had a spun crank hub.

https://f87.bimmerpost.com/forums/sh....php?t=1589992

I believe that is a failed Main bearing - not a spun hub.

Edit: beat me to it


Also - the guys drilling into the gears to "pin" them... I believe someone had theirs crack from drilling due to how those gears are manufactured.