[W126 Coupe] optimum air to fuel ratio

[David Fatovic]

If you lean it out you get better gas mileage since
you are not using as much fuel.  That is probably what
the Indy driver was doing leaning out to finish the
race.

David

--- "Shayegan, Richard" <rishayegan at davidson.edu>
wrote:

> There's more fuel but less air right? I know leaner
> = more power for
> 2-strokes, I know in Indy the driver's lean em out
> as far as they can
> (I've even seen a blown engine on the last lap as
> the driver tried to
> lean it out further to get more power), and a guy I
> know who builds race
> cars says leaner=more power, but then everywhere I
> read says 13.5 is
> ideal for power. Is it just that 14.7 is overlean?
> 
> Here's an example of the conflicting evidence
>
http://www.kennebell.net/faq/faq-answers11%286%29.htm
> 
> It says in answer to the third question 13.5 is
> ideal for power, but it
> takes high octane to run lean. Then it says want
> more power run higher
> octane and go leaner (I'm paraphrasing). This is a
> link Jim Nowak gave
> as evidence that 13.5 is better than 14.7, so it
> makes me think it's
> credible.
> Richard
> 
> -----Original Message-----
> From: mbcoupes-bounces at mbcoupes.com
> [mailto:mbcoupes-bounces at mbcoupes.com] On Behalf Of
> Dan Landiss
> Sent: Thursday, August 25, 2005 4:44 PM
> To: Mercedes Coupes Mailing Lists
> Subject: Re: [W126 Coupe] optimum air to fuel ratio
> 
> Shayegan, Richard wrote:
> 
> >As far as I always knew, leaner = more power
> >
> Somebody lied to you.
> 
> >how can 13.5 give more power than 14.7?
> >  
> >
> Because there is more fuel.
> 
>  
> --
> Never argue with a dragon, for you are crunchy and
> taste good with
> ketchup.
> 
> 
> 
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