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help 1000 psi genies ,, fuel raito

S

snowhippy

Member
need help with psi motor ,, need to know if anyone knows what the fuel to compression ratio like how many lbs of compression for pump gas -- how much for 50/50 mix & how much for all out race fuel ,,... need help ..thanks .....
 
On my 990 Bruce gave me some info years ago. He said 130 for pump gas, 160 for race gas running 1000' drags and 180 for race gas runing 660' drags. Don't know how accurate it is since i haven't really tried them all.
 
I ran 50/50 in my 925 at 142lbs comp...but thats with CUSTOM BILLET HEADS
 
I ran 25% race fuel in my 1155 twin on 150lbs compression.

BUT even at that, it still depends on the squish and compression ratio.
 
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