Fuel pumps for tripple carbs

[Brabham]

Hi guys,

            would I be able to get away with running a mechanical fuel pump on a hot L28 with tripples or will it starve of fuel? If I have to go electric, can I install it so that no mods are required to fuel lines etc, eg I can change back to stock setup easily? Cheers.

[reverendzed]

At risk of sounding like lurch 1/Probably 2/yes.

Rev.

[Zedman240®]

I ran with a stock 260Z electric fuel pump with triple 40 Dellorto's without any issues. Unless you are running a blown Keith Black Hemi on alcohol, a good electric pump should be fine.

[peter mc]

Just remember that you only need 4psi fuel pressure but with good volume there are several good pumps on the market, efi hardware have them in stock for this application.

 

[Riceburner]

I run a pierbug electric pump from efi hardware (part no. 864-340). I have it mounted near the tank with a relay for stable voltage and get 2.9psi at the carbs, had it for 6yrs without a problem. They are good for up to 340hp  I just got a spare to fit and leave in there incase the other fails for some reason.

 

[Brabham]

How have you guys mounted the pump and done the wiring? Did you use a the standard 260Z electric fuel pump bracket. How do you run the wiring? Cheers.

[Mr240z]

I ran a std mechanical fuel pump with triple 45 webber's for years without a problem.

[luvemfast]

I have swapped the EFI pump out for a standard 260Z electric unit for my tripple 40's, no problem.

[Riceburner]

How have you guys mounted the pump and done the wiring? Did you use a the standard 260Z electric fuel pump bracket. How do you run the wiring? Cheers.

 

Yeah mine is mounted where that was, also had factory wiring already there  used that to energise relay then ran a fused active from the battery. If you don't do this it will fluctuate from voltage drops in the loom, I didn't use a relay originally and you could hear the pump speed up/slow down when the indicator was on at traffic lights  They are a very quiet pump compared to some, I've tried a Carter Rotary and it was crazy loud!

 

By the way it's a Pierburg pump not Pierbug as I put in my previous post...

[Zedman240®]

Most zeds have a large green wire that runs to the rear with the wiring for the fuel sender on the tank; Most of the time its tapped up so it cant be seen easily. It should be there.

[Brabham]

Pauly - did the engine ever lean out or starve at higher revs?

 

Zedman - is one of the green wires a power because this setup would go on a car that originally had a mech fuel pump. Or do all looms include the wiring for the electric pump?

 

Cheers.

[chris240]

Dim

are you saying that you can use the green wire as a possible feed for a small pump ? does a 240's wiring have this green wire ?

 

[Riceburner]

The switched 12v wire in mine is green and was taped up in the original loom exactly as Dimitri said.

[Zedman240®]

Im using it now for my EFI pump and its actually quite a large diameter wire. The plug is taped to the loom up behind the heater control panel; its a white "H" shape plug with 2 large green wires. One side has power, all you need to do is wire up a relay and it's just about done.