In a message dated 5/25/05 12:00:26 AM Pacific Daylight Time,
jon.the.wise@gmail.com writes:
> The reason that you need more to make equal power is
> that it has a lower BTU rating, and you have to run closer to a 6-8:1
> air:fuel ratio as opposed to a 12-14:1 air:fuel of gasoline (leaded or
> not) to get the same burn. Alcohol also burns slower, which is why you
> usually advance the timing 14 or so degrees further than you would
> with gas.
I'm not the best tuner in town but I've never found alky to make
substantially more power than a good motor on gasoline. If using constant flow
FI I run
more pressure to get the atomization I would like to see, with a carb it's even
for both alky & gas in HP. In days gone by you ran very high compression with
alky, we do the same with today's gasoline. The latent heat of vaporization
being the only benefit I've found. Of course this is only "my" view yours may
differ, the record book speaks for itself.
Mike
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