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compession ratios

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Old Dec 5, 2009 | 06:13 PM
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cossyking
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Default compession ratios

im building a new engine and how do i work out compression ratio.

my piston including bowl is 5ml of fluid and the head is 45ml.
how do i work out what the compression nratio is ?
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Old Dec 5, 2009 | 06:21 PM
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http://www.johnmaherracing.co.uk/enginecalc.htm
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Old Dec 5, 2009 | 06:25 PM
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or my one - but you'll need to put in the YB bore and stroke as its setup for A-series engined minis,,,

www.afracing.com/CR.xls

alex
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