Reply to "Octane vs Compression Ratio..."

steveflierMember

Thanks guys,

If you run 89 octane do you need a higher compression ratio? I understand that the octane rating is the ability of the fuel to withstand predetonation, but it seem that the more you compress the gas mix, the greater the heat generated and therefore the more chance of predetonation.

I'm just trying to find out what the optimum C/R would be when running mid-grade fuel in your basic stock engine.

SteveFlier

[This message has been edited by SteveFlier (edited 05-14-2001).]

5/14/016:40 AM

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