octane rating of some small alcohols

[Bruce Plecan]

Alky doesn't have near the BTUs, hence you have to run allot of it to make
any power, and there is soo much in the chamber, can't help but to cool the
chamber a little so not quite as prone to detonation
Bruce


----- Original Message -----
From: "Jeff Bromberger" <blownz at home.com>
To: <diy_efi at diy-efi.org>
Sent: Monday, October 02, 2000 1:27 PM
Subject: Re: octane rating of some small alcohols


> What am i missing here?... you can get gas that's 116 octane and alcohol
is
> always touted as being higher octane than gas. I had heard that it was
> around 150. Guys running alcohol and nitrous don't use as much or any
timing
> retard as their gas equivalents... and indy cars run some pretty extreme
> compression. 106 seems very low to provide these benefits...
>
> jeff
>
> >
> > Methanol given as 106, Ethanol as 107, no number given for propanol or
> > iso-propanol. (Obert)
> >
>
>
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