octane baby!

[jdbubb at ix.netcom.com (Dan Bubb)]

There's only one problem with your equation. A JH doesn't ping on 89, so if
you stick a "not =" everywhere you have an "=" in your equation that will be
the correct equation for an 8.5 CR non-KS JH.
Every engine has an octane requirement. Once you meet that requirement going
higher will only lighten your wallet (less weight=better mileage!)
PL, 3A, ABA all have a higher octane requirement than a JH. Feeding them
swill will probably hurt your mileage as the KS retards timing under some
circumstances (do you really think it's retarding timing under part throttle
cruise conditions which is where you spend the vast majority of your
driving??).
Check this out. Perhaps not definitive, but input none the less. See para
6.13 and 6.15
http://www.faqs.org/faqs/autos/gasoline-faq/part3/
Dan

----- Original Message -----
From: "ATS - Patrick Bureau" <txrocco@sbcglobal.net>
To: "Dan Smith" <sad_rocc@yahoo.com>; <scirocco-l@scirocco.org>
Sent: Sunday, September 14, 2003 11:11 PM
Subject: RE: octane baby!


> higher octone = less ping = burn fuel better = better hp = better
efficiency
> = probable better gas mileage,
>
> I know if I put 89 in my car a tank lasts me less than 250 miles, at 93 I
> run 300-350 on a tank..
>
>
> ATS - Patrick Bureau - txrocco@sbcglobal.net
> ----------------------------------------------
> MSN:ATSGTX@hotmail.com |YAHOO:ATSGTX@yahoo.com
> ICQ:32918816           |AIM:Texasscirocco
> ----------------------------------------------
>
>
> =>-----Original Message-----
> =>From: scirocco-l-bounces@scirocco.org
> =>[mailto:scirocco-l-bounces@scirocco.org]On Behalf Of Dan Smith
> =>Sent: Sunday, September 14, 2003 5:28 PM
> =>To: scirocco-l@scirocco.org
> =>Subject: octane baby!
> =>
> =>
> =>Yeah, a corny play on a song title, but I couldn't resist.
> =>Anyways, CO has octane ratings at the pump ranging from 85 to 94.
> =>With gas prices ranging from $1.77 to 1.99 respectively, I want
> =>to see if I can settle this hot debate among my housemates. Does
> =>higher octane gas equal better gas mileage? And enough of a
> =>better mileage to make it cost effective? This would be for my
> =>relatively stock 84 8v, which doesn't deserve high octane gas if
> =>it doesn't make a difference mileage-wise. When responding,
> =>please try to keep the formula equations to a minimum as high
> =>school chem was a long time ago and I just squeeked by.
> =>
> =>TIA,
> =>Dan
> =>
> =>
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