whats the ideal Fuel line setup for triple carbs?

[overdrivex]

from searching these the setups I have found so far.

setup 1- filter > FPR > inline,but no return fuel line.

setup 2- filter > FPR > inline with return fuel line(i read some where that this can go in in reverse flow too)

setup 3- filter > FPR > 3way splitter with no return line

setup 4- uses stock rails flow in from rail>FPR than other return line.

which setup is best for a l28, electric pump, filter between tank and pump, filter between pump and FPR

or if you have better suggestion on fuel line setup that i did not illustrate id like to hear it

[Doehring]

Good question,

I have chosen setup 2 now, before the car run with setup 4.

My setup is el.fuel pump to pressure regulator to filter and setup 2.

[gnosez]

I'm running filter (Holley 100 micron), pump, regulator, filter (OEM), carbs (in line w/#2 set-up) and return.

No issues after 25,000 miles of very hard driving.

[Carl Beck]

The "best" set up is #2 because it has a return line. This keeps the gas flowing through the lines and therefore at a more steady temperature, which is normally cooler.

The second best would be #4 - if you can get a good fuel pressure regulator between the pump and the fuel feed line.

#3 Could also be used - "IF" you have it connected to a fuel distribution block, preceded by a good fuel pressure regulator.

Just make sure that your return line is a size smaller than the feed - to maintain consistent pressure at the carb.'s.

FWIW

Carl B.

[pit crew guy]

I'm closest to figure two. I have a fuel cell mounted in my trunk with two Holley filters going into a Holley elec. fuel pump, the fuel line than goes to my holley regulator mounted on my drivers side fender well. I than have two lines from my regulator , one goes to my #1 carb, the other goes to my #3 with fuel line from each going to middle carb. I have no return.

[overdrivex]

cool seems like setup 2 is the most recommended. thanks for the info. there was so many options and every one said there cars ran good. but... just because it runs doesnt means it the best setup.

[fixitman]

The photos show setup 2 utilizing the original fuel rail brackets with a vacuum line and canister purge to the balance tube.

Fixitman

[overdrivex]

The photos show setup 2 utilizing the original fuel rail brackets with a vacuum line and canister purge to the balance tube.

Fixitman

nice. i also see that you found a way to hook up the carbon filter. i was having a problem finding a way to hook up my carbon filter t the carb system. i only have two rails though.

[overdrivex]

i got the carbs in. im gonna go out to the the local performance shop monday to get fuel lines and see if they have some T fittings to run setup #2. also after seeings fixitmans post im gonna try and hook up my carbon filter the way he did.

[bradyzq]

I would suggest #2 ish.

Tank => filter => pump => filter => carbs => FPR => return

[five&dime]

I have twin mikuni 44's in my 510. I am running a low pressure Carter electric fuel pump near the tank. Aeroquip 6 stainless line with anodized fitting. It goes from pump to a Holley low pressure regulator. From there the single line goes to a Y distribution block with a fuel pressure gauge. Then one line to each carb.

How would I do a return in this system? Could I use the older small hard line that was the feed as the return? I am just unsure the best way to plumb it into the system.

I like that system you have fixitman. With the fuel rail. Very clean!!! Any photos of the whole car?

Edited March 31, 2009 by five&dime

[fixitman]

I have twin mikuni 44's in my 510. I am running a low pressure Carter electric fuel pump near the tank. Aeroquip 6 stainless line with anodized fitting. It goes from pump to a Holley low pressure regulator. From there the single line goes to a Y distribution block with a fuel pressure gauge. Then one line to each carb.

How would I do a return in this system? Could I use the older small hard line that was the feed as the return? I am just unsure the best way to plumb it into the system.

I like that system you have fixitman. With the fuel rail. Very clean!!! Any photos of the whole car?

Thanks. The car isn't complete yet. Other issues have been more pressing over the last few months. But you can see about 40 photos at my Members Gallery taken during the restoration process. A few photos are seen belwo.

Fixitman