ms3, ported 243s, will i have to flycut
09-16-2013, 06:18 PM
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ms3, ported 243s, will i have to flycut i have stock pistons on a stock shortblock, will I have to flycut my pistons to install my 243 heads and ms3 cam??
what if heads get milled .030?
what if heads get milled .030?
09-16-2013, 07:55 PM
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With a cleanup cut and not much else (.005 or so) and a stock gasket you can probably get by, but with .030 milled off id say no way. That being said the only way to know is measure
09-16-2013, 09:56 PM
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An MS4 will barely hit... did this on a buddy's car with stock unmilled 853's. Never pulled the heads off so it had stock gaskets. Was such minimal contact that you could barely see the marks on a couple of the pistons.
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09-17-2013, 07:42 PM
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It BARELY hit and there wasn't any material to go anywhere... nic'd the flattop just enough to create a small pit. I didn't setup/install the cam, only was there to see it taken apart after the eng. spun a rod bearing.
09-17-2013, 08:18 PM
#9
Just for everyone's info. Even if you just tap a valve to the piston the valve should be replaced. The valve head could be bent a minimal amount and you may not be able to tell until the head falls off the stem or you otherwise disassemble for inspection.
