Fuel lines, system plans....

[boostin05blacksti]

Ok so after reading till my eyes bleed. Here is what I have come up with. Most of this information is from Brett over at aeromotive. Just wanted to share this info as I have not seen many people running these fuel systems like this. Also get some opinions as to where to mount the regulator, fuel filter..ect.. If anyone has their system ran like I am please post up some pictures. Thank you.

Some general info on my car
gmpp lsx 454 (fuel injected)
Fast 102 Intake
Fast fuel rails
Fast 55-60 lb injectors
Magnum t56
Rick stainless tank (bosch pump)

I estimate the car will make around high 600-low 700 at the crank. With that being said I need 1/2 (an-8) feed line and 3/8 (an-6) return line

I was told by him that the fuel system should be ran like this.
an-8 (1/2) feed line out of tank into
filter 12321
an-8 line into
Y block 15673 (1 an-8 in, 2 an-6 out) mounted in engine compartment
(2) an-6 to each fuel rail, back side of the motor near the firewall
(2) an-6 out of front of fuel rails into regulator 13101 (2 an-6 ins, single an-6 out) also mounted in engine compartment
an-6 line to return on tank.



I have already order 20' an-8, 25' an-6 all teflon coated.

With all that being said almost every ls1 I see that has billet fuel rails uses the crossover on the front and just a single in and single out. Just wanted to get some opinions on this. Brett told me that to be ran correctly this is the way it should be.

Heres a quick drawing also.

[parsonsj]

You need to check out vaporworx. http://www.vaporworx.com

The Aeromotive method will work in most cases, but it will lead to heated fuel and eventual cavitation and vapor lock. (where's Jody?!)

I went through 3 A1000 fuel pumps in 2 years and 4000 miles. All replaced under warranty, but still...

Edit: do a search on "regulator" or "deadhead" -- we've debated this topic before, and I used to be the guy arguing for the Aeromotive method. I talked to Brett too.

[boostin05blacksti]

Ive done some readinn on this. I see they have a conversion for the ricks tank that would need to be welded in. My question is what are the cost for this kit?

[Denvervet]

Agreed with vaporworx. What you are planning is a lot more work and I believe less effective. I was planning your same setup and glad before I collected all the items this new setup became available. I sold my pump,speed controller,etc. Lastly found out I didn't need pre and post pump filters........still got one to sell you if we can't convince you to go vaporworx. All IMHO of course.

[EFI69Cam]

Another vote for the vaporworx. I've already been down the road you're fixing to start on. You will get vaporlock/cavitation. You can think of a return based fuel system as an intake manifold cooling system, only without a way to shed heat.

Cavitation is when the negative pressure on a fluid causes a spontaneous phase change to gas, and the higher the heat load in the fluid the lower the negative pressure needed to cavitate.

The other issue with converted tanks is that you will need to keep the fuel level up or you will uncover the pump inlet. Cavitation from the hot fuel combined with the frequent going dry on the inlet will set the pump on a downward death spiral.

There are big differences between what works on a EFI drag car (what you are designing and what all the aftermarket pumps are for) and a street car system.

[boostin05blacksti]

Does anyone have carls phone number? Id like to call and talk with him. Thanks Steven

[CarlC]

Sorry guys, I've been out for a few days with limited connectivity.

Steve, I replied to your email with a phone number. If you decide to use the RetroWorx kit the final product will look much like this but with a different fuel module.

[INTMD8]

That's what I ordered for my Brougham. Ricks tank/vaporworks with dual pump CTS-V module.

Seems like the best solution

[CarlC]

'57 El-dorado. Nice. Over the holidays I installed the same setup into a '64 Cadillac convertible with an LSA. It's a nice match.

[old66tiger]

Retroworx? So a standard Ricks tank with a new pump module installed? I run a circulating fuel system because I was told by FAST that in order for their EFI to work properly that I had to have a circulating fuel system. my system has worked very well. No problems to date.

[parsonsj]

I run a circulating fuel system because I was told by FAST that in order for their EFI to work properly that I had to have a circulating fuel system.

I've done lots of work on FAST EFI systems, with all kinds of different plumbing methods -- deadhead, after rail circulating, before rail circulating, tank recirculating, etc. As far as I know, all any EFI cares about is fuel pressure, and that the pressure behaves in a linear way.

[camcojb]

I've done lots of work on FAST EFI systems, with all kinds of different plumbing methods -- deadhead, after rail circulating, before rail circulating, tank recirculating, etc. As far as I know, all any EFI cares about is fuel pressure, and that the pressure behaves in a linear way.

I've had the same results.

[parsonsj]

Here's a custom fuel tank story, using vaporworx gear.

Courtesy of Grassroots Motorsports:

http://grassrootsmotorsports.com/pro...i-fuel-system/