aser1z

i need to know what the compression will be (from experience) on a gsr bottom end w/jdm itr piston on a b16 head?,gsr bottom with jdm p30 pistons on a b16 head? and gsr bottom w/ctr pistons on a b16 head?(all pistons are standard size).i already checked the calculators but from shops and compression tests the numbers are way different....help......

Chris F

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by aser1z &raquo;</TD></TR><TR><TD CLASS="quote">i need to know what the compression will be (from experience) on a gsr bottom end w/jdm itr piston on a b16 head?,gsr bottom with jdm p30 pistons on a b16 head? and gsr bottom w/ctr pistons on a b16 head?(all pistons are standard size).i already checked the calculators but from shops and compression tests the numbers are way different....help......
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Very few of us have GSR bottom ends. Did you try the Hybrid or All Motor forum?

12.345:1

-Chris

v4lu3s

compression tester vary from model to mode, and things liek the port job and cams also effect compression test results too.
if the calculators vary a lot go ahead and dig up teh vaolume calculations from an old feometry text or from a geometry web site on teh internet and calculate the compression yourself.

Chris F

edit: nevermind...

So what was your compression test result? Stcck ITR's have seen like from 240 psi to 170, depending on the tester and exact method used.

-Chris