Doug Ross writes:
> It definitely helps "Rosebud" with her 10.5 to 1 comp. ratio.
> ( allows for considerable more advance w/o ping.)
Yeah, but... The higher octane burns more slowly and actually contains less
energy. If your compression ratio is so high that you need the higher
octane to avoid pre-ignition then, by golly, you really need it. However
being able to push the timing earlier just because you can doesn't
necessarily mean you get more power. You need to measure your power output
(or have a highly calibrated backside) to be sure.
Just my two cents.
Jim Muller
jimmuller@pop.rcn.com
'80 Spitfire (Percy)
'70 GT6+ (Nigel)
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