Posted by Bob on March 16, 2019 at 08:50:22 from (64.255.159.199):
In Reply to: Rod bearing question posted by pburchett on March 15, 2019 at 18:47:16:
Quoting Removed, click Modern View to see
You don't SUPPOSE FM got it RIGHT do you? (LOL!)
There always be one or two that can't accept what 98% the rest of the world accepts as "convention".
If you dig deep enough into this, you will find that "oversize" bearing inserts are actually larger OUTSIDE DIAMETER, and are used in certain situations where the rod or main bearing bore is greater than "spec", to "save" the part.
ONE example would be "cracked" rods, where the mating surface can't be ground in the reconditioning process.
Less the "cracked rod" thing starts a new round of argument, see link.
Also, " For powdered-metal “cracked cap” rods, depending on the amount of out-of-roundness that must be corrected, and depending on what thickness rod bearings are available, you may be able to hone to a round condition and install oversize bearings, which will provide the OE I.D. to accommodate oil clearance at the crank, while featuring a thicker wall (and larger O.D.) to use with the overhoned rod big end."
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