Thread: Insert bearings
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Old 02-01-2017, 05:58 AM   #13
BRENT in 10-uh-C
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Default Re: Insert bearings

Quote:
Originally Posted by CT Jack View Post
I have to ask Dave from MN a question. Is it possible the machinist preparing the block for the inserts didn't install the proper dimensions for a good fit for the OD of the inserts?Taking this possibility into consideration along with a tight bearing fit initially and also maybe the engine wasn't dynamically balanced properly could have all contributed to the failure. If this did happen it had nothing to do with the inserts.
I'm not Mr. Gerold, but you are very correct in that the OD tolerance is only 0.00025" either way, ...which takes a good machinist with good equipment to be able to repeat that 3 times per block. Not all engine rebuilders have the skill and/or equipment to pull that off. Babbitt is much more forgiving.
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