Re: Checking for Compression

Ryan Mayer /
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figure out your corrected compression ratio(after the exhaust port is closed), make sure to add the tube's volume to the combustion chamber's.

Then do the math. For example if you came out with 5:1CCR the math would be 5 to the power of 1.4, multiplied by whatever atmospheric pressure you have, sea level is 14.7psi. With a little oil in the cylinder to help seal your rings the gauge should show the same number your math came out with.

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