i currently running a built gsr , itr head, mugen thin and endyne 12.5 pistons. im thinking im high 12's comp if not breaking into the 13.'s... i want to lower my compression without having to remove my pistons, im thinking about getting a cometic but i dont think that it will lower me much past 12.5 so i was thinking about gettting a turbo headgasket. but i wasnt sure if thats gonna be potentially bad/dangerous for my setup.
does anyone have any expierence with this of have any ideas on how i can lower my comp safely without sacrificing to much power...

 

neone?>

 

you are correct on thinking cometic! it will slightly lower your compression without hurting your performance. i happen to have a an unused gsr one as well if you want it. its .043 thick so its not so thick that you'll lose power, but enough to keep it safe

 

Keep it high and run some race gas lol

 

how much do you want for the gsr cometic. thats what i may do bryant...

 

unopened, 70 shipped in the 48 states. cheapest you'll find or i'll beat the price.

 

why dont u do the math first to make sure u truely are that high of CR. i bought my JE 12.5:1 pistons 3 yrs ago. it wasnt until this last yrs offseason that i actually did the math. at stock deck height which i was at my pistons with a B16 head only were actually 11.3:1. talk about feeling ripped off. o well the car ran strong as hell on low compression. most piston manufacturers give piston CRs with .030 piston to deck height (which is stock). so its a possibility that ur car is only running upper 11.?:1.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1 2 NV &raquo;</TD></TR><TR><TD CLASS="quote">why dont u do the math first to make sure u truely are that high of CR. i bought my JE 12.5:1 pistons 3 yrs ago. it wasnt until this last yrs offseason that i actually did the math. at stock deck height which i was at my pistons with a B16 head only were actually 11.3:1. talk about feeling ripped off. o well the car ran strong as hell on low compression. most piston manufacturers give piston CRs with .030 piston to deck height (which is stock). so its a possibility that ur car is only running upper 11.?:1.</TD></TR></TABLE>
hmm aside from doing the math i really need to just get a compression test to find out. i guess im pondering on lowering my comp so i can run safely on pump 91...

 

usually u can just pull a few degrees out of the timing. u can hear detonation so just listen for it and then pull some timing out.