428 2X4 Fuel Plumbing

[Clois Harlan]

I am changing my fuel plumbing on my 428 w/ 2X4 carbs. To begin with I have relocated my Fram fuel filter from the engine bay to the rear of my car above my fuel cell. I have changed electric fuel pumps from a Holley (97gph) to the Aeromotive (140 gph). So now my fuel goes from from my fuel cell to the Fram Fuel Filter to the Aeromotive fuel pump and is carried along the frame via 3/8" steel tubing and up to the fire wall. At the fire wall I bought a Moroso three way fuel block that splits off via AN-6 fittings and braided SS hoses to TWO Aeromotive Fuel Regulators. From the Regulators the fuel is carried to each carburator via additional AN-6 fittings and 3/8" braided SS hoses.

The reason for this change was that during race conditions at Road America I believe I was starving my engine. The good looking 2x4 fuel log I was running is fine for street use but I think it is inadequate for race conditions. Does anyone have an opinion or suggestion on these mods.

With this group I know I am asking for trouble by asking for suggestions or OPINIONS. But I am especially interested in those of you that are running 2x4 carbs on a FE that has competed in some track events.


Thanks,



Clois

[keithw]

Clois,

I'd say that if your problem was fuel starvation at Road America, you should have fixed it with this first class Aeromotive upgrade.

By the way the email on the card you gave me doesn't work. Could you PM me your email again?

Thanks,

Keith

[Clois Harlan]

Keith,
My computer is in the shop until tomorrow for a virus removal. Here is my office and home emails:

office: clharlan@duke-energy.com
home: tulsacobra@valornet.com

Thanks Keith,

See you and Jay in St. Louis in a few weeks.

Clois

[joea]

Clois,
Can you give us an update on your plumbing changes? How did it work out? Do you recommend this over a fuel log?

[KobraKarl]

Clois,

I have a "totally stock " fuel log , mechanical pump, with stock 1965 2x4 setup..........and I have run the hell out of it without ever starving.......

You may have had a bad pump, But I dont believe you can improve fuel flow by replacing the log.....the stock log will allow at least as much fuel as your new set up .....you will get to separately meter your fuel .......but I dont see the advantage of that..........

my two bits ,KK

[joea]

Karl...where did you get your fuel log

[KobraKarl]

Joe, I bought it on E-bay for $20 , (original 60.s part) they are not hard to find there, try" ford dual quad" I see them frequently, also some reproductions.
KK

[Coloradocobra]

Clois,

Based on your description, I am wondering if your problem is not on the pickup side. I think most fuel pumps do not like negative suction pressure. Therefore, if you are putting a filter on top of the tank, I assume that the pump is also up there. Therefore, under some track condtions when you have mediocre fuel levels over the pickup in the tank, the pump may be starving. What type of tank are you running and where is the pickup. A SCCA racer friend used two pickups in his fuel cell, right and left, with two fuel pumps just to avoid this problem. Even then, he was very careful to inspect the fuel pump inlet screens before practice sessions and races to ensure best possible fuel flow.

Is there any way to mount the pump down low at least level with the tank and then move the filter on to the pressure/outlet side? Can your pickup inside the tank be modified to ensure best possible conditions when turning and accelerating?

Regards and good luck,

Gary

[Clois Harlan]

Gary,

I did exactly that and I will post some pics as soon as I get my home internet site set back up this week. I had to replace my hard drive and lost all my basic setups. Trying to find all the right discs after we moved into our new home a few months ago.

Clois