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thstone · 05-01-2012, 04:51 PM

A compression ratio of 11:1 yields a maximum 161 psi compression measurement (11 times the atmospheric pressure of 14.7psi).

**EDIT**

It seems that the conversion from compression ratio to expected PSI and how the actual measurements are taken is quite complicated and not at all straightforward. Hence, I am not sure about my statement above. Will investigate further.

05-01-2012, 04:51 PM	#2
thstone Certified Boxster Addict Join Date: Nov 2010 Location: Los Angeles Posts: 7,669	A compression ratio of 11:1 yields a maximum 161 psi compression measurement (11 times the atmospheric pressure of 14.7psi). EDIT It seems that the conversion from compression ratio to expected PSI and how the actual measurements are taken is quite complicated and not at all straightforward. Hence, I am not sure about my statement above. Will investigate further. __________________ 1999 996 C2 - sold - bought back - sold for more 1997 Spec Boxster BSR #254 1979 911 SC POC Licensed DE/TT Instructor Last edited by thstone; 05-02-2012 at 09:19 AM.