[DML] Re: Carburetors suck.

["content22207" <brobertson@xxxxxxxxxxxx>]

You are joking? This is pretty elemental stuff:

Pressure of the air stream drops as it speeds up through the venturis. Atmospheric pressure pushes fuel from the bowl into the air stream. Voila -- as long as a healthy engine is turning and there is fuel in the bowl, you have fuel delivery (vacuum tight intake manifold of course). 

Bill Robertson
#5939



--- In dmcnews@xxxxxxxxxxxxxxx, "Martin Gutkowski" <martin@...> wrote:
>
> A beautiful example of you deflecting that which defeats your own argument. Did you even read past the subject? 
> 
> I'm not even sure you know *how* a carb works... Venturi effect? static versus total pressure? Surprise me....
> 
> Martin
> 
> Sent from my BlackBerry®
> 
> -----Original Message-----
> From: "content22207" <brobertson@...>
> Sender: dmcnews@xxxxxxxxxxxxxxx
> Date: Wed, 11 Apr 2012 19:59:19 
> To: <dmcnews@xxxxxxxxxxxxxxx>
> Reply-To: dmcnews@xxxxxxxxxxxxxxx
> Subject: [DML] Re: Carburetors suck.
> 
> Point of order: PRV's themselves suck. All a carburetor does is respond to that suction as it passes through.
> 
> Bill Robertson
> #5939
> 
> --- In dmcnews@xxxxxxxxxxxxxxx, Marc Levy <malevy_nj@> wrote:
> >
> > "All metering is accomplished by air flow alone"..
> > 
> > Exactly the point Bill-  What about air temperature?  Air density? ignition timing? fuel quality?  All moving targets that a carburetor had no way of compensating for.
> > 
> > There is a reason complex fuel injection systems have come to replace the simple (and complex) carburetors of the past. 
> > 
> > 
> > --- On Wed, 4/11/12, content22207 <brobertson@> wrote:
> > 
> > > From: content22207 <brobertson@>
> > > Subject: [DML] Re: Carburete a DeLorean at DCS'12?
> > > To: dmcnews@xxxxxxxxxxxxxxx
> > > Date: Wednesday, April 11, 2012, 3:19 PM
> > > Also FYI:
> > > 
> > > Speaking for the Autolite/Motorcraft 2100 only:
> > > 
> > > Unless the carburetor itself physically changes (gets
> > > dropped & cracked, stagnant fuel turns to varnish
> > > inside, jets are purposefully unscrewed and swapped out for
> > > different sizes, etc) it will "hold its tune" into
> > > perpetuity. Not counting the accelerator pump and the full
> > > throttle enrichment valve -- which has been disabled on my
> > > carb and Byrne Heninger's -- there are only two moving parts
> > > in the entire metering circuit: the throttle plates
> > > themselves. All metering is accomplished by air flow alone,
> > > and the amount of fuel that leaves the bowl through the jets
> > > in response to that air flow.
> > > 
> > > Bill Robertson
> > > #5939
> >
> 
> 
> 
> 
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