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Re: Octane and altitude ratios???

To: "David Councill" <dcouncil@imt.net>,
Subject: Re: Octane and altitude ratios???
From: "James Nazarian Jr" <james.nazarian@colorado.edu>
Date: Wed, 5 Jul 2000 22:34:34 -0600
these are the numbers that I get in Boulder.  I couldn't remember them at
the time so I didn't throw them in.

James Nazarian
71 B Roadster
71 BGT 
63 Buick 215

"Aerodynamics are for people who cannot build engines"
Enzo Ferrari

----------
> From: David Councill <dcouncil@imt.net>
> To: James Nazarian Jr <James.Nazarian@colorado.edu>; Andrew B. Lundgren
<lundgren@iname.com>
> Cc: Bullwinkle <yd3@nvc.net>; mgs@autox.team.net
> Subject: Re: Octane  and altitude ratios???
> Date: Tuesday, July 04, 2000 7:07 PM
> 
> I thought of that idea too, but I think our petrol here in Montana is
also 
> about two points lower than sea level. You didn't mention numbers but 
> regular unleaded here is 85.  And we are only at 4000 feet above sea
level.
> 
> I couldn't find any info from my old college engineering books on any 
> calculations. At this point, I'm curious as to whether petrol gets lower 
> than 85 octane in high elevation areas because I don't recall seeing it
any 
> lower. And I'm thinking that the regular petrol at sea level is 87.
> 
> David
> 67 BGT
> 71 BGT
> 
> At 05:50 PM 7/4/00 -0600, James Nazarian Jr wrote:
> >I don't have equations, but I think the gas companies have done that
> >already.  The lowest octane gas here in CO is two points lower than the
> >lowest octane at sea level.  Like I said, no formulas, but there is a
two
> >point drop in the ~6000 feet between here and sea level, so maybe you
> >could approximate -1pt per 3000ft.
> >
> >James Nazarian
> >'71 B roadster
> >'71 BGT rust free and burnt orange
> >'63 Buick 215
> >
> >"Aerodynamics are for people who cannot build engines"
> >Enzo Ferrari

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