Thread: Coyote xs v 427
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Old 11-18-2015, 12:19 PM
Phill Pollard Phill Pollard is offline
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Join Date: Sep 2014
Location: Colorado Springs, CO
Cobra Make, Engine: ERA 427 S/C, Ford 427 Side-oiler 2x4 bbl
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Quote:
Originally Posted by Dimis View Post
We measure using different scales.
USA uses AKI or something like that.
Aus uses RON

I can't quite remember the details. Google it for more info, but I recall researching this with my engine builder to ensure that when we built my engine compression and octane levels jived.

Thx
There are two ways to measure Octane ratings. The Research method and the Motor method. In the US we use the average of both combined (R+M/2).

In Oz, they use one or the other. If I remember correctly (IIRC), they use the Motor method which is the higher of the two.

Your 93 Oz octane gas is NOT the same as US 93 octane, far from it.


HTH,

Phill Pollard - Co. Spgs, CO
ERA #446 427 S/C
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