It ought to be leaner needles for high altitude. Less Air+same gas=too
rich. Now mind you I was not saying there would be NO effect, just that it
was not substantial enough to bother with. I suppose if you are too rich to
begin with on the flatlands you'd WAY too rich up at 10000 feet. Tend
toward a little lean and you'll be just right at the heights.
And yes, Pete is right - there is nothing that can compensate for the fact
there IS LESS AIR. The right mixture will result in too little gas+air and
as you go higher you will eventually reach the point where combustion is not
possible, of course by then neither will breathing be possible.
Jim Altman jaltman@altlaw.com Illigitimi non Carborundum
http://www.altlaw.com/metro/jaltman.html 69-TR6#CC28754L(O) W4UCK
-----Original Message-----
From: owner-triumphs@autox.team.net
[mailto:owner-triumphs@autox.team.net]On Behalf Of Barry Schwartz
Sent: Wednesday, August 11, 1999 9:40 AM
To: Jim Altman
Cc: triumphs@autox.team.net
Subject: Re: Altitude and carbs
>I think the carbs function in a manner that renders altitude irrelevant.
>Flame suit on, fire when ready.
******************************************
While it sounds good in principle, there actually were different (richer)
needles installed specifically for high altitude vehicles-Don't have the
numbers handy, but I'm sure someone on the list will (anybody with factory
spec needles in Denver??)
Barry Schwartz (San Diego) bschwart@pacbell.net
72 FI, V6 Spitfire (daily driver)
70 GT6+ (when I don't drive the Spit)
70 Spitfire (long term project)
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