Nova Scotia Canada
My Posts: All Forum Topic
The problem still lay in the ID of the fan and screw holes for the clutch. The clutch seats inside the bore of the fan hub.
Or just take that one to the machine shop and have them true it up by removing a thou or so on the od and the face.
So if you did machine anything of any importance it would be the ID and the top face, but then the inside hole would be too big to center the clutch boss. You are also left with elongating the holes in the steel clutch and using a filler so things don't shift once correctly positioned. I like to keep the my process simple when possible, but you can skin cats differently.
The bending stress does not seem to load the bearings from my experience, it goes into the crankshaft thinner area above the bearing inner race. You can check this with the piston removed. If you relieve the lower section of the fan hub (the smooth area seating above the bearing inner race before the threads) with sandpaper the effect is reduced and distrubuted somewhat due to the long arm. Granted I have not corrected for 16 thou but with 8-10 it worked fine.