Originally Posted by
1QwkSport2.5r
Are the correct width bearings being installed? Are they seating completely? I’ve had bearings that didn’t seat completely bind up when the prop was tightened. Does it only bind when the prop is tight or does it bind all the time?
It binds all the time with the new case but never binds in the old crankcase. So I don't think it's a bent crankshaft.
I worked it to quite loose with the polishing compound and old bearings. Both sets of bearings, new and old, are identical size. So it might be the new bearings are not seated correctly. But visibly they look fine.