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Original Message
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| RE: Piston |
| By Mel Clark - 08/22/2001 10:10:11 PM; IP 64.12.104.188 |
| You will need to cc the heads and if all of the pistons are the same deck heigth you can figure your compression by cc.ing only 1 cylinder, add for the space of a compressed head gasket and compute the mechanical ratio. To use the stock dished pistons you will have to mill a good bit from the heads to get to 10.5 to 1 compression which is about the max for pump gas. If your engine was one of the high compression (flat top pistons) 2V engines you could get away with a clean-up mill. Cast pistons will work well in an engine that does not go over 6000 rpm, after that safety requires forged pistons, even though many get away with even higher rpms with the cast pistons. |
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