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Power block - JD70
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Posted by Dave Hathaway on August 22, 2003 at 17:08:50 from (64.30.52.186):
I have a power block for a JD 70. If I bore the block to .250 over, the pistons for that bored block are 3/4" longer from the center of the wrist pin to the head of the piston than the pistons that are in the block now. Boring the block 3/4" deeper to accomodate the longer pistons means boring beyond the spark plug ports. Do I instead have to shorten the connecting rods if I want to keep the stroke the same? I'm new at this - thanks for your help
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