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turboteener turboteener is offline
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Join Date: Jan 2002
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You have to be careful when machining high compression pistons for lower compression. It can cause some distortion in the ring lands based on forging stresses that may be relieved by the machining process. I know there isn't a lot of quench in our engines, but just throwing spacers under the cylinders to lower the compression ratio can make detonation and pre-ignition worse. A careful study of the piston shape and its interaction with the combustion chamber should be done to ensure optimal combustion chamber shape.
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Brett
Old 02-07-2008, 01:56 PM
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