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Old 01-23-2004, 03:02 PM
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Join Date: Mar 2002
Location: so cal, Cal
Cobra Make, Engine: I used to fix them for a living
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Here in the US, we list the average between the" Research octane" and the "Mechanical (or motor) octane"

(R+M)/2

If i recall correctly, research octane is usually a higher number than the Mechanical octane.
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In a fit of 16 year old genius, I looked down through the carb while cranking it to see if fuel was flowing, and it was. Flowing straight up in a vapor cloud, around my head, on fire.
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