Weber carbs/electric fuel pump

[Jerome Ryals]

How many of you guys found you had to use an electric fuel pump when you installed webers on your 912. Original pump doesn't seem to do it, rebuilt a spare still not much better. If you use an electric where did you pick up your electric connection?

[ron69912t]

I used the stock fuel pump. I believe the Weber 40IDF's need only 3 to 3-1/2 psi. I checked the output pressure on my stock fuel pump and it was right there. She runs great too!

Maybe you have a fuel delivery problem from the tank.

Thanks,
Ron D

[cobra-6]

I switched to a carter Fuel pump, with the Webers and seem to have less popping and lag at higher RPMS. Might be me but it sure seems to run better...

[jac912]

I haven't looked recently but my electric pump is powered off the wire that feeds the coil or regulator with ignition on. The electric pump came with the car and webers so don't know about the mechanical pump.

[Jerome Ryals]

Installed electric fuel pump, got it from local Advance Auto Parts store, they actually have quite a selection. Still having trouble with fuel flow, decided to take the 3/4 carb off and disassemble. Evidently it had been sitting either upside down or laying on its side on the parts shelf, float was stuck closed. Miracle of miracles a little penetrating oil and, she sure does run a whole lot better. Left the rebuilt fuel pump in place, just in case.

[C. Clark]

I use a rotory pump from CB Performance, but have been hearing good things about the Carter.
Chas.
69/912

[Griznant]

My application is a little bit different (Type 4 engine with Weber 44s), but I run an electric pump. It's a Bugpack facet pump, mounted near the rear torsion tube and is powered via a fuel-pump relay kit from Painless wiring. Works well, but when I first got it running I was using a $20 purolator pressure regulator that didn't work for crap. I wasn't getting enough fuel, and the engine was terribly starved. Finally, I found that the regulator didn't flow worth crap, no matter how it was adjusted, and the cheap pump only puts out about 4psi anyway, so I ditched the regulator and feed the carbs direct. It's worked well for about 2000 miles now with no problems.

If I did it again, I'd probably go for a different pump, most likely a rotary one. I heard they are great, and much quieter than the "midget with a machine gun" that currently pumps fuel.

Later,

G

[cobra-6]

I mounted my Carter pump in the gas heater section up front. Used existing lines and wired directly to a switched fuse. I used the existing lines for fuel. Everything I've heard or read said the closer to the fuel tank the better. The Carter really moves the fuel well.

[ron69912t]

Electric fuel pumps are better "Pushers" than "Pullers" so the closer to the tank the better. All new cars have them inside the tank!

Thanks,
Ron D

[C. Clark]

With a little effort the smugglers box works well for the pump, pushs the length of the car and is close to the tank. I am getting an interia switch though.
Chas.
69/912

[Griznant]

Well, back by the torsion bar isn't too bad since gravity is feeding the pump, and you don't have to "pull" the fuel much at all. I tried to mount it up front, but have no room (I have a gas heater), so there weren't many options besides this. It does work well, just keep it as low as possible.

Later,

G

[atlporsche]

how's that heater working?

sjd

[Griznant]

Originally posted by atlporsche
how's that heater working?

sjd

Dunno, haven't actually gotten far enough to get it running. It looks nice though.

Gotta finish up the front suspension and new seat mounts first. THEN I worry about heat.

Later,

G