Originally Posted by
DaveSSS
You can check for the need to face a BB shell with feeler gages. Screw each cup in until it contacts a .010 inch feeler and then use .008-.012 feelers to check for high or low spots. If no areas exceed thos limits, you're good. With the older cartridge style BBs it's the drive side that needs facing, not the nondrive side. With the new outboard cups, both sides may need it. Of course there should be no paint remaining on either face of the BB shell. If you didn't at least clean the faces, start over.
I guess I got mixed up on which side was which with the cartridge bb. Thanks for the tip w/ the feeler gauge.
And I guess I'm going to err on the safe side and go get the shell faced.
As for tightening the crankarm, the center bolt adjusts the bearing preload. It does not hold the crankarm in place. The pinch bolt keeps the crankarm on (most of the time).
Yeah, but after years of checking crank bolts for tightness, it's still strange :-)