I guarantee if you circulate the fuel back to the tank you will increase
the temperature of the gasoline, that's not a good deal. Saw this a couple
of times in the Can-Am and in our TR-250 cars where the power went down
after half race due to the rise in fuel temp. Sent the fuel back to the tank
thru a "cool can" which fixed it all.
----- Original Message -----
From: "William G Rosenbach" <wgrosenbach@juno.com>
To: <spitfiresuz@141.com>
Cc: <fot@autox.team.net>
Sent: Friday, February 27, 2004 9:13 AM
Subject: Re: Fuel system answers
> Susan and those who regulate,
> Though I've never built the device to test the idea, instead of trying
to
> control the fuel pressure before the carb, allow full flow and pressure
> to flow to the carb. Put a valve downstream of the carb that opens at
the
> desired maximum fuel pressure that allows excess pressure to bleed off
> and return to the tank. That way, if pressure drops at full power, all
> available fuel flow goes to the carb first. It is a little like the pill
> system used in some mechanical FI systems but instead of a fixed orifice
> it would use an adjustable spring loaded valve.
> Just a thought.
> Bill
> 70 GT-6+
>
> On Fri, 27 Feb 2004 06:26:37 -0600 Susan Kahler <spitfiresuz@141.com>
> writes:
> > Good morning!
> >
> > Regarding HPD's, I got fuel system answers from Bill Babcock
> > (below):
> >
> > Single pickup fuel cell
> > Two pumps in parallel with outlet check valves (gold colored
> > centrifugal
> > pumps--I think their Holly but might be carter).
> > High flow fuel filter from Summit
> > Cheesy silver regulator with pressure adjustment that you can buy
> > everywhere
> > (my nice one died)
> > Three outlet manifold with pressure gauge
> > 3-4 pounds with webers.
> >
> > Tony Drews, who has a "a single
> > holley blue top and matched low pressure regulator."
> >
> > And Glen Efinger :I use the same basic setup on everything, that
> > being
> > Carter rotary for main pump & usually the same for backup, sometimes
> >
> > Facet. Dual pickups, Holley regulator & 2 1/2-3 psi. Usually use
> > steel
> > housing in line filter before regulator. Note that Facet isn't
> > capable
> > of handling flow requirements @ racing speed of some high speed
> > big-bore
> > engines so is a "limp home" only backup. Also some of the float
> > needle
> > valves have restrictive orifice that will limit high speed
> > operation.
> > The advice that has been posted re bowl orientation is correct.
> >
> > Uncle Jack kindly gave me his diagnosis and fix ideas, but cunningly
> >
> > kept his setup to himself! :)
> >
> > Have a great morning, and thanks again to everyone who responded!
> >
> > Keep Triumphing,
> > Susan :)
> >
> >
>
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