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Post by alleyoop on Oct 12, 2014 23:59:17 GMT -5
Take a compression test on the motor and divide by 14.7 to get your approx ratio. For example if your compression comes out to be 150psi divided by 14.7=10.2 ratio, 180 psi divided by 14.7=12.2. Alleyoop Forget all that wiki noise and just make it easy on yourself.   |
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Post by xyshannen on Oct 13, 2014 0:41:02 GMT -5
Take a compression test on the motor and divide by 14.7 to get your approx ratio. For example if your compression comes out to be 150psi divided by 14.7=10.2 ratio, 180 psi divided by 14.7=12.2. Alleyoop Forget all that wiki noise and just make it easy on yourself. Now that's what I'm talkin bout! That makes it a whole lot easier. Thanks! |
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Sophomore Rider
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Post by buford1488 on Oct 13, 2014 5:21:45 GMT -5
when i done heads with big valves if the person wanted very high compression i would not chamfer the combustion chamber and the compression would be well over 200psi....thats only if it was ported proper...millsc would know.....be safe..buford..
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Post by xyshannen on Oct 13, 2014 11:35:51 GMT -5
buford1488 Thanks for chiming in Buford, I was hoping you would read this. Looking at the combustion changer on the head I'm working with, the rough edges, vs a stock head, have been cleaned up. Hope all's well..
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..BAD TO THE BONE..
