Quote:
Originally Posted by Marshy
Regarding issuing a 72cc combustion chamber, that's a really good way to go to get your CR down. However, I wouldn't recommend it blindly. Ask your builder to give you the deck clearance and piston relief volume so you can estimate your CR now and with the 72cc heads. You should (ie your builder) needs to know the deck clearance to choose a head gasket anyways so you aren't asking an oddball question anyways.
Did you chose a cam already? I'll review if you did... you might want the smaller heads if you are using a large duration cam. That's where you get into dynamic compression which dictates what octane you need, not necessarily static compression.
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Hi Marshy,
I have posted the cam specs in post #5. I'm not really familiar with what all of the specs mean. I know it has to do with the opening and closing of the valves and what not but that is about it.