steve spedd Posted January 12, 2014 Share Posted January 12, 2014 (edited) Evening all, I've been trying to do a little digging to establish what compression the car should have with an NA engine with the thicker TT gasket (stock NA pistons). I'm aware that on the stock cars they are: NA - 185psi or more, min 156psi with 14psi difference between the cylinders TT - 156psi or more, min 128psi with 14psi difference between the cylinders. So if the car is running the TT head gasket which means the compression is 9:2:1 what should the compression test results be for the NA-T? Any help would pre appreciated.... Edited January 12, 2014 by steve spedd (see edit history) Link to comment Share on other sites More sharing options...
David P Posted January 12, 2014 Share Posted January 12, 2014 (edited) If N/A @ 10:1 = 185psi max 156psi min - diff 14psi and T.T. @ 8.5:1 = 156psi max 128psi min - diff 14psi. Mental arithmetic says; N/A-T @ 9.2:1 = 169psi max 145psi min - diff 14psi. Edited January 12, 2014 by David P (see edit history) Link to comment Share on other sites More sharing options...
steve spedd Posted January 12, 2014 Author Share Posted January 12, 2014 Thank you sir! Just not seen any results of what people have been getting on all these NA-t builds... Link to comment Share on other sites More sharing options...
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