Fuel lines, system plans....

[boostin05blacks]

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 [FONT=Arial][SIZE=2]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.

[camcojb]

That way definitely works, but you may end up needing a fuel cooler on the return line if you do a lot of driving. Doesn't occur on all cars, but I've seen enough cars stuck on the side of the road on Power Tour to know it can be an issue.

The reason you see most LS swaps with a single fuel line is because that's the way the factory did it on the later model Vettes, etc. The fuel filter contained the regulator and bypass line back to the tank. The factory computer used PWM to control the pump, and the results were a simple install that works great. With the fuel not being heated by the fuel rails and engine compartment and then being returned to the tank, plus the computer controlling the pump output you eliminated the heat issues. There are guys running similar setup to way past your HP without issues. Also saves money on the return line to the tank since it returns near the rear of the car off the inline filter. Fuel doesn't get heated by the fuel rails to be returned to the tank, bypasses that entire deal.

The absolute best fuel system in my opinion is a Vaporworx system from Carl Casanova, installed in a quality tank like Rick's or DSE. That system picks up every last gallon of fuel in the tank without slosh issues, has a controller for the pump, and can support a LOT of power. This one doesn't even need the bypassing filter outside the tank, does it all internally. Plus again only one line to the engine.

[130fe]

Boostin, shouldn't the regulator go before the Y fitting? The return fuel (from the manifold) shouldn't need regulated, will it?

[camcojb]

Originally Posted by 130fe

Boostin, shouldn't the regulator go before the Y fitting? The return fuel (from the manifold) shouldn't need regulated, will it?

It could go before or after. I know many drag racers like it after to compensate for acceleration. I've done it both ways without issue, but there are many manufacturers and experts that draw it up just like his drawing.

My opinion, there are other ways proven to work. And the approved method in the drawing can cause some issues and costs that you don't have with the other ways.

[parsonsj]

Yep, what Jody said. VaporWorx is the best solution around.

[boostin05blacks]

Ok ...so everyone is pointing to vaporworx. How much should I expect to pay for the upgraded section that would need to be welded into the tank? Im guessing it comes as a complete kit with everything I need? Im ready to pull the trigger on buying the rest of this stuff so Im going to hold off unitll I explore all other options. Thanks Guys.

[camcojb]

Originally Posted by boostin05blacks

Ok ...so everyone is pointing to vaporworx. How much should I expect to pay for the upgraded section that would need to be welded into the tank? Im guessing it comes as a complete kit with everything I need? Im ready to pull the trigger on buying the rest of this stuff so Im going to hold off unitll I explore all other options. Thanks Guys.

get hold of Carl. There are options depending on HP, etc.

http://vaporworx.com/

[boostin05blacks]

Originally Posted by camcojb

get hold of Carl. There are options depending on HP, etc.

http://vaporworx.com/

I wrote them an email. Put my fuel line order on hold. I not going to lie the thought of my having my expensive s/s tank cut up to be modified is making me sick to even think about. Even more so when I think about how much I spent already...

Anyone have a phone number I can call him at?

[camcojb]

Originally Posted by boostin05blacks

I wrote them an email. Put my fuel line order on hold. I not going to lie the thought of my having my expensive s/s tank cut up to be modified is making me sick to even think about. Even more so when I think about how much I spent already...

Anyone have a phone number I can call him at?

pretty sure he has another job. He'll get back to you. Carl is a great guy.

[GregWeld]

Originally Posted by 130fe

Boostin, shouldn't the regulator go before the Y fitting? The return fuel (from the manifold) shouldn't need regulated, will it?

If he put the regulator BEFORE the Y -- he could just return the fuel right back to the tank and make it "appear" that it's a "return less" system the way new cars are done -- WAY less plumbing - WAY less heat soak in the return fuel.

No reason at all to run it after the injectors. They just want to see constant fuel pressure at whatever rate it's set to.