Quote:
Originally Posted by cobrabritt83
Does anybody know how to figure out what your comp. ratio will be when the manufacture dosen't list your combustion chamber size. It says 73cc 11:4:1,
76cc 11:0:1 dome volume -8cc, but i would like to know what it would be for 88cc chambers. I also would like to know what the limit is for comp. ratio (streetable) with cast iron heads using pump gas. thanks
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i don't like to exceed 10:1 with iron and 93 octane. others may have a different preference.
i'm not sure but last motor i remember doing i think it was 10cc=1 pt CR
so the info you were showing the 88cc would be about 10 CR...i think... the -8cc is a dished piston...
if your buying pistons provide the CC of the head, deck height, the rod length and state what CR you want and they will make them for you