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Fuel
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Posted by: loudexrider

Do you need 2 run race gas with 11:1 compression or can you run half 93 and half race gas?

Posted by: JOEX

Most people say you can run straight 92/93 octane with 11:1 compression. I suppose it will depend on how accurate the 11:1 number really is.

Posted by: loudexrider

I'm really not going for top speed. I am planning 2 get a 416 kit for more mid range power, But i do not want spark knock in the engine.

Posted by: 2001300exguy

could u run pump with 12:1

Posted by: 2004exrider

yes you are correct, 11:1 you use 93 octane once above that you have to run race gas, so 12:1 you would have to run the race gas or else you would get detonation/spark knock, which is preignition of the gas from the heat and compression almost like a diesle engine