electric fuel pump

tdegens Wolfsburg Wizard

425 posts · joined Apr 2004 · 5 Apr 2005, 8:37 pm

#330668

Can an electric fuel pump be used with a carburetor fuel system? Motor had fuel injection and thus no mechanical fuel pump . I Want to see how it goes with the dellortos. Has anybody got a set of dellorto t4 manifolds lying around that they want to part with?

[Edited on 5/4/2005 by tdegens]

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 · 5 Apr 2005, 8:49 pm

#330684

Yes
L8tr
E

Im not a complete idiot, quite a few parts are missing....

56astro Custom Title Time!

1,772 posts · joined Aug 2002 · 5 Apr 2005, 9:28 pm

#330721

Fuel regulator may need changing though

I think you'll find the EFI pumps pump at a far higher pressure than carbs like

VW car, VW engine ...... keepin it "real"
35MPG on 101.3kPa

tdegens Wolfsburg Wizard

425 posts · joined Apr 2004 · 5 Apr 2005, 9:30 pm

#330724

How is the fuel regulator changed or can it be adjusted?

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 · 5 Apr 2005, 10:45 pm

#330821

I would think You would need to buy another fuel pressure regulator to get the flow & Low pressure You need for the carburetors needle & seats.....

Usually Fuel Injection used very high pressure electric fuel pumps.... Much too high for carburetors to handle....

Lee

http://community.webshots.com/user/vw68autobug

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- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

56astro Custom Title Time!

1,772 posts · joined Aug 2002 · 6 Apr 2005, 7:22 am

#330903

I'm not sure if this would work with a HP fuel pump, but it regulates the pressure to where you want it for carbs:

http://www.cbperformance.com/catalog.asp?ProductID=580

VW car, VW engine ...... keepin it "real"
35MPG on 101.3kPa

VWCOOL 23 Windows of Awesome

5,158 posts · joined Jun 2003 · 6 Apr 2005, 7:39 am

#330909

EFI pumps are designed for continuous circulation of fuel at high pressures (40-50psi) while carbs need 3 or 4psi etc etc ... just buy the proper low-pressure pump

Pay your debts, CxxT

BiX Veteran Volks Folk

2,499 posts · joined Sep 2002 · 6 Apr 2005, 8:27 am

#330926

yep jsut runnning a low pressure pump (4 to 6 psi) with mine and also a pressure regulator to keep a constant pressure, and fine tune it. I also picked upa little device that hooks up near your coil, it feeds power form the +ve side of teh coil to the pump, and has a wire hooked up to the -ve side, as long as the -ve side is sending out pulses quicker than a set amount, it has the relay open and the electric pumnp going, but as soon as the engine is switched off or stalls the pulses stop and so does the pump.

I have no sympathy for my car, only the wallet that pays for it!
Go hard or go home!!!!

56astro Custom Title Time!

1,772 posts · joined Aug 2002 · 6 Apr 2005, 8:36 am

#330933

tdegens wrote:Can an electric fuel pump be used with a carburetor fuel system? Motor had fuel injection and thus no mechanical fuel pump . I Want to see how it goes with the dellortos. Has anybody got a set of dellorto t4 manifolds lying around that they want to part with?

[Edited on 5/4/2005 by tdegens]

Did you intend to use the EFI pump, or just replace it with a LP fuel pump. (I may have totally misunderstood you Q)

VW car, VW engine ...... keepin it "real"
35MPG on 101.3kPa

68AutoBug Beetle Restorer - Experience over 138\% - YIKES --

11,654 posts · joined Aug 2002 · 6 Apr 2005, 11:42 am

#331045

I think He wanted to know whether he could use the EFI Pump....
I don't think He can either, as the EFI used very high pressures compared to the pressure used with Carburetors...

I have a low pressure electric pump & that was a pic of MY holley fuel pressure regulator.....
You don't want to exceed the pressure of a mechanical pump
and wear out Your carbies Needle & seat....

Lee

- Helping keep Air Cooled VWs on the road - location: SCONE in the Upper Hunter Valley - Northern NSW 320 kms NNW of SYDNEY---

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 · 9 Apr 2005, 3:57 pm

#333077

68AutoBug wrote:You don't want to exceed the pressure of a mechanical pump
and wear out Your carbies Needle & seat....

Lee

Bwaaahahahahahahaha......umm I dun think the needle and seat would ever "wear out" dude.

Coz at the deliver pressure of an unregulated EFI pump the needle and seat would never "seat" hence no wear............

Sorry mate, i could not hold that one back!!! LMAOE:kiss

Is this guy actually going to use an old EFI pump or a plain electric fuel pump????
Doesnt seem to have said.

If its a plain old low pressure electric pump then go right ahead but as posted previously, go the extra couple of yards and fit a pressure regulator as well.

If its an EFI pump then forget it unless you want to buggerise around with a "pump around" tee piece system.

pffttt. Wank.

L8tr
E
L8tr

Im not a complete idiot, quite a few parts are missing....

tdegens Wolfsburg Wizard

425 posts · joined Apr 2004 · 9 Apr 2005, 10:12 pm

#333265

Thanks guys just going to use the fuel injection system as is. Worked out how to put it all back together. so should be sweet.

tassupervee That really hurts doesnt it!

1,171 posts · joined Sep 2003 · 10 Apr 2005, 9:54 am

#333387

Wise move M8
Good Luck.
L8tr
E

Im not a complete idiot, quite a few parts are missing....