[tempest1964]

I’m going to make an assumption here. And yes, I know what happens when I make an assumption. Nevertheless, I am going to assume that the bearing moving in and out 1 to 2 mm means a very light slip fit. No more than .0005”. 5 tenths in machinist talk. So, using my assumption, at worst case of .0005”, when the bearing is touching one side the centerline of the bearing would be .00025 off of centerline from the crank pilot bearing hole. If you use green loctite like Mike said, there will be a film of loctite all the way around the bearing until it sets up. Then you are down to maybe.0002” off of centerline or less. I would think that since in the real world of manufacturing where nothing is ever perfect, and that’s why tolerances to size exist, .0002” deviation from centerline would not make any difference in performance.

[mgarblik]

Originally Posted by tempest1964

I’m going to make an assumption here. And yes, I know what happens when I make an assumption. Nevertheless, I am going to assume that the bearing moving in and out 1 to 2 mm means a very light slip fit. No more than .0005”. 5 tenths in machinist talk. So, using my assumption, at worst case of .0005”, when the bearing is touching one side the centerline of the bearing would be .00025 off of centerline from the crank pilot bearing hole. If you use green loctite like Mike said, there will be a film of loctite all the way around the bearing until it sets up. Then you are down to maybe.0002” off of centerline or less. I would think that since in the real world of manufacturing where nothing is ever perfect, and that’s why tolerances to size exist, .0002” deviation from centerline would not make any difference in performance.

Exactly, easy way to secure the bearing without any potential slip ups. Staking the bearing in the crankshaft will certainly work. But the OP did not want to stake his forged crank. I think the Pontiac factory service manual says to stake it. My only issue is staking with the engine installed, I always seem to have that errant stake strike that misses a little and can hit the bearing or shield.