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Old 04-30-2007, 05:53 PM
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main bearings

if you get a block line bored for crankshaft.not the cylindes,and the crank is turned.then you need 010 over and 010 under?? thanks

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Old 04-30-2007, 05:58 PM
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When they line bore a block, they remove a little from the caps, so the hole ends up the same size. If you turn the crank, it will need undersize bearings.
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Old 04-30-2007, 07:46 PM
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Poncho is correct in a general way. Then you can get into split case motors and/or cracked rod motors.

These would have oversized outer bearing shells with undersized crank surfaces. Common on old VW's and newer cars.
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