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machined heads

Old 10-05-2011, 12:54 PM
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decked heads

Hi,Does anyone know how much to machine from the heads to get a 12.5 :1 compression ratio using standard pistons ?

Last edited by muppet; 10-09-2011 at 08:56 AM. Reason: better name
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Old 10-05-2011, 01:50 PM
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Have a look at one of the CR calculators online.

Engine Compression Ratio (CR) Calculator
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