Posted by t.r.k. on March 15, 2019 at 19:07:31 from (71.31.64.233):
In Reply to: Rod bearing question posted by pburchett on March 15, 2019 at 18:47:16:
At one time you could get .001 or .002 undersize rod bearings for a lot of the older engines. I think some engines had .001 and .002 main bearings offered as well. This was an aid if there was just a bit too much clearance on a worn crank pin.
On some new engines where they goofed up machining the crank they came from the factory with undersize bearings too. It was a way to avoid scrapping an otherwise perfectly good and rather expensive crank. And the actual measured diameters of the crank pin and the bearing didn't matter as long as the clearance between them was correct.
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