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Old 05-22-2015, 10:30 AM   #5
Kohnke Rebabbitting
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Join Date: May 2010
Location: 60615,330th Ave.,Clare, Iowa, 50524
Posts: 1,457
Default Re: shimming engine bearings

Quote:
Originally Posted by norcalal View Post
Model a engine had a rattle starting with just medium throttle in second gear. Center main was over .003 then, brought it to.015, spun fine, I took a shim out of one side of the rear main, now extremely hard to crank, but starter will turn it freely. PlastIguage shows .015. don't want to burn up a bearing, should I reassemble with too much clearance according to specs? Please advise!! thank you
If you want to be safe from a slightly tight bearing, pull it around the block a time or two.

Water and oil in, gas off, and spark plugs out.

High gear, and about 15 miles an hour, never more.
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