Fuel line from tank to fuel log

Rottie · #1 (**permalink**) 10-10-2013, 05:54 PM

Hello,

I am putting together a Kirkham and I am wondering if anyone has run an aluminum or stainless 1/2 hard line from the pump area to the engine compartment or does everyone just run a fuel hose? I don't think that I am going to run the fuel pump in the trunk, but I have to decide if I am going to use an internal or external electric pump.

Thanks,
peter

gsharapa · #2 (**permalink**) 10-10-2013, 07:18 PM

I ran a 1/2 stainless steel hose fuel line on my car with a big electric fuel pump under the rear of the car. I have the original pumps in the truck but with a big all aluminum 496FE I wanted more volume of fuel using 850 Quickfuel carb.

Bernica · #3 (**permalink**) 10-10-2013, 07:58 PM

Quote:

Originally Posted by gsharapa

I ran a 1/2 stainless steel hose fuel line on my car with a big electric fuel pump under the rear of the car. I have the original pumps in the truck but with a big all aluminum 496FE I wanted more volume of fuel using 850 Quickfuel carb.

Nice Gary! Like flushing a toilet when you step on it!

mickmate · #4 (**permalink**) 10-10-2013, 08:58 PM

It's all about how much HP you want to support and for how long. A 3/8" or -6AN will feed 500HP unless it's turning 8K on a banked oval for an hour.
The other priority which it sounds like you are addressing is ethanol proof line.
The pump/s in the trunk typically just run reserve supply anyway.

lovehamr · #5 (**permalink**) 10-10-2013, 09:02 PM

I used 1/2" aluminum line on mine. I believe I posted some pics in my gallery when I did it.

Bernica · #6 (**permalink**) 10-10-2013, 09:19 PM

I just finished re-plumbing with the black rubber 3/8" with black braided from tank to carb. Supposed to be good with the ethanol. Got rid of all previous Teflon/stainless braid stuff. I guess we will see.

RICK LAKE · #7 (**permalink**) 10-11-2013, 04:56 AM

Rottie Pete I run an FI system and have 2 1/2" seperated system running to my system and 3/8" return line. Better to have too much than not enough. Fuel pressure regulator will handle pressure and return line handles the rest. Stainless is great if you can bend it. I went with aluminum lines. This is for track cars ONLY. This is NOT for street usage. Over time aluminum lines will crack from vibration. I have mine with plastic tube to protect from rock hits and clamped every 12" with insolated hose clamps. Alot of states will fail you if you run aluminum on the street. Only down side I have seen is the gas gets warm with a return system. 1, 1/2" line to motor and 1, 5/16" back to tank. Would also recomend an intank fuel pump setup. I have made my own with 2 pumps in the tank. Double filters, relays and switchs to control both or a single. Last note, problem with rubber hoses over time and with E gases. Methanol eats the rubber out over time. I got 13 years on both short lines from pumps to housing. Inside where eaten and the filters where full of like rubber partials. No damage other than car not running. Same applys for fuel regulator diapham. If you run with external pump have 2 pickups at both ends of gas tank. Making hard high "G" turns will cause a fuel issues. Been there and have done that. Most external pumps should not be mounted too high for they don't have alot of sucking to prime the system. A weldon pump would be a good one if going external. Good luck Rick

Gaz64 · #8 (**permalink**) 10-11-2013, 01:35 PM

Hard line it as much as you can, hard lines don't collapse or deteriorate over time and are impervious to modern fuels.

Have never understood why we can't have aluminium on the street, considering A/C lines are made of the same stuff.

A ruptured aluminium A/C line will dump a heap of PAG oil which burns anyhow.

So the authorities would rather any hose over aluminium tube, even though the burst strength of the tube is superior.