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RE: Conrod bolts

"Quote"

"You can't just change the rod bolts, when you change rod bolts you need to have the rods closed and honed by a machine shop."

I wasn't aware of this, I thought you just pressed the old bolts out and the new ones go straight in? What is the process to do this?

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generally the only time the rods are closed & honed is when the engines had new pistons and crank machined
i have had conrod bolts come partly out when disassembling a engine and tapped them back in with no issues
as long as you are carefull doing it there should be no problems

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You may get away with just changing bolts but accepted practice is to close and hone the conrods after new bolts are fitted. Conrod bolts are an interference fit and when new bolts are fitted it can deform the bearing surface. To counteract this a machine shop will fit the new bolts then machine a small amount off the mating surface of the cap (closing) then refit the cap and hone the bearing surface to the correct dimension.

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Cheers
David

aka hq308belmont

My Archived Shed

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