john_p_b
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| posted on 5/8/07 at 02:48 PM |
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twin 40's, do i need a fuel return pipe?
well after mucho time messing about i finally the other day got around to fitting my facet fuel pump, all very good but i'm stuck with 1 thing.
on the original ford set up it goes tank to pump, pump to regulator then from the regulator there's 1 line off to the carbs and 1 a return to
the tank, simple.
but running with the facet pump and filter king regulator i have no return line? is it a case i don't need a return line now i'm on a
electric pump or am i going to have to modify more parts to suit?!
thanks in advance for any help given.
built a car, built a home, had a family. lost the family, lost the home, still got the car.
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britishtrident
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| posted on 5/8/07 at 02:51 PM |
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If you have a fuel pump intended for carbs you don't need either a regulator or a return line.
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john_p_b
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| posted on 5/8/07 at 02:52 PM |
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it's a facet silvertop pump, but i was told these run at around 7psi and my webers only like around 4psi?
built a car, built a home, had a family. lost the family, lost the home, still got the car.
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mookaloid
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| posted on 5/8/07 at 02:55 PM |
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The flter king regulator can be adjusted to give the correct pressure
"That thing you're thinking - it wont be that."
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john_p_b
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| posted on 5/8/07 at 02:58 PM |
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so no return line required then?
built a car, built a home, had a family. lost the family, lost the home, still got the car.
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flak monkey
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| posted on 5/8/07 at 02:59 PM |
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No return needed. Just a regulator for the pump. You should need about 2-3.5psi for webers and plenty of fuel volume!
Sera
http://www.motosera.com
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mookaloid
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| posted on 5/8/07 at 03:01 PM |
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My set up is just as you have described yours and it works fine so no you don't need one
"That thing you're thinking - it wont be that."
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caber
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| posted on 5/8/07 at 04:31 PM |
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Ditto I have twin 40s Fuel King and a Pacet pump which stops running when the Fuel king closes. All works nicely, just need to set the carbs up and
fix the exhaust!
Caber
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britishtrident
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| posted on 5/8/07 at 06:20 PM |
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Always amazes me why builders have to complicate fuel systems.
Why buy a high pressure pump in the first place.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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john_p_b
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| posted on 6/8/07 at 05:18 PM |
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the simple answer to the above would be it was cheap 
built a car, built a home, had a family. lost the family, lost the home, still got the car.
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britishtrident
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| posted on 6/8/07 at 06:16 PM |
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Main problem with regulators is regulator can only work by shutting off the flow.
Other problem with regulators is they tend not to work in a no flow situation, comming from a marine engineering steam ship background not to trust
pressure regulators was hammered into me.
With a sytem with a proper return line it a different matter.
The presure in a fuel line on a carb engine should be determind by the internal spring fitted to the pump.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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