my bottom end has std flat top pistons, but the heads i have worked out at 58cc chambers, and on my engine will be 11.5-11.8:1.
just need some heads to wack on it b4 i get better ones.
copper head gaskets go up to 90thou which will be enough for your problem they cost around 175 a pair and dont pose any real issues exept that your manifold may need extra gaskets to bring it up to spec, 2 sets of standard 40though gaskest would cost that if you brought decent ones.
racer, could u explain some more about quench distance etc, unless i fall onto some money soon, ill be using these with 2 gaskets for now. and the limiters set at 5000 till i get better valves.
The flame stays in there as it doesn't have complete burn.So when next compression takes place it will detonate or fire too early..Thats the reason why also 4 valve heads can get away with high compression on blown engines....
If your not planning on keeping the heads, can you open up the combustion chamber a bit to lower comp some?
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