[AT] fuel system question

Ron Cook ron at lakeport-1.com
Sat Jan 19 19:47:33 PST 2013


Those are the only ones I am aware of, John.

Ron Cook
Salix, IA
On 1/19/2013 8:54 PM, jtchall at nc.rr.com wrote:
> I can come up with a couple of ideas but no single reason:
> No fuel pump, providing the tank is mounted higher.
> Keeps the hood lower down.
> Maybe being below the exhaust manifold keeps the  carb cooler---I might be
> stretching a bit with this one.
>
>
> What tractors did use a downdraft carb? I think IHC F-12 and 14 did, but
> can't think of any others.
>
> John Hall
>
>
> -----Original Message-----
> From: Ron Cook
> Sent: Saturday, January 19, 2013 8:37 PM
> To: Antique tractor email discussion group
> Subject: [AT] fuel system question
>
> What is the reason most tractors and industrial engines use updraft
> carburetors?  Some early inline automobile engines used updraft but they
> switched to downdraft eventually.  Most aircraft engines use updraft.
> Any ideas?  Maybe gravity fuel systems?
>
> Ron Cook
> Salix, IA
>




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