compression calculation
Thread Starter
Joined: Dec 2004
Posts: 607
Likes: 1
From: Winter Haven, Fl.
getting ready to install afr 62cc heads with cometic .040 gaskets. pistons out of hole .007. i am planning on using the crane cam i have now, 216/224 115 lsa with .590 lift on 1.8 crane rockers. intake closes @ 38* ABDC. will i be ok with scr and dcr with this combination?
I see Texas speed has the .40 gaskets and Thunder racing as the .45. I wonder if there are two gaskets or someone is wrong.
Im going with the 63cc, .40 gasket, with the TR224. I should be just under 11:1
Im going with the 63cc, .40 gasket, with the TR224. I should be just under 11:1
Thread Starter
Joined: Dec 2004
Posts: 607
Likes: 1
From: Winter Haven, Fl.
calculated scr and dcr using an intake closing 73*ABDC, with a 62 cc chamber and a .040 cometic, i get 11.3:1 and 8.4:1 respectively. cometic carries a number of thicknesses, just thought .040 would be best. don't really need to twist above 6K with my setup. Thanks phil



