The Murphy Builders Site

I have an Ellision Throttle Body for my 0320 and don't know if the Rebel has
enough head pressure to run it without a fuel pump? Gravity is so simple and
uncomplicated but a fuel pump will requires the use of a mechanical and back
up electric pump, as well as more fittings and hoses and something else to
fail. The TBI PSI is min 2 and max 6. The TBI people say use a pump but the
specs seem to say the Rebel has sufficient head pressure to operate 150% of
the fuel flow. Anyone using a TBI out there?

Bruce G 357R




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Off the top of me head so to speak...
Four feet of vertical head gives 2 psi with water so you'd need almost 6
feet with gas so methinks you gonna need a pump unless you mount the
carb 6 feet below the bottom of the tank.
Ken

Legeorgen@cs.com wrote:

I have an Ellision Throttle Body for my 0320 and don't know if the Rebel has
enough head pressure to run it without a fuel pump? Gravity is so simple and
uncomplicated but a fuel pump will requires the use of a mechanical and back
up electric pump, as well as more fittings and hoses and something else to
fail. The TBI PSI is min 2 and max 6. The TBI people say use a pump but the
specs seem to say the Rebel has sufficient head pressure to operate 150% of
the fuel flow. Anyone using a TBI out there?

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Hi Ken

My quick calculations are in agreement with your numbers. A head of about
69.3" of Avgas would give you 2 PSI head pressure.

Brian #328R

-----Original Message-----
From: murphy-rebel@dcsol.com [mailto:murphy-rebel@dcsol.com]On Behalf Of
klehman@albedo.net
Sent: Saturday, April 21, 2001 9:36 PM
To: murphy-rebel@dcsol.com
Subject: Re: Ellision Throttle Body


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Off the top of me head so to speak...
Four feet of vertical head gives 2 psi with water so you'd need almost 6
feet with gas so methinks you gonna need a pump unless you mount the
carb 6 feet below the bottom of the tank.
Ken

Legeorgen@cs.com wrote:

I have an Ellision Throttle Body for my 0320 and don't know if the Rebel

has

enough head pressure to run it without a fuel pump? Gravity is so simple

and

uncomplicated but a fuel pump will requires the use of a mechanical and

back

up electric pump, as well as more fittings and hoses and something else to
fail. The TBI PSI is min 2 and max 6. The TBI people say use a pump but

the

specs seem to say the Rebel has sufficient head pressure to operate 150%

of

the fuel flow. Anyone using a TBI out there?

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Ken,

That 6' of head pressure might be a little difficult. It might work in a
power dive, though.

Bruce G



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