Dedicated fuel System

**2006SilverRT** · 04-22-2012, 03:09 AM

Ive been doing some reading across other forums on race fuel do and donts and how long it lasts. Theres a big difference in opinions thats why im posting the question here. For guys that run race fuel in a dedicated system....

What do you store it in?
How long is it good for?
Do you drain it out of the dedicated tank after the track? Or leave it in?

I have been storing mine in a plastic 5 gallon container which apparently is a no no, since the fumes can evaporate through the plastic and it loses octane???
Would I be able to keep race fuel in the dedicated tank after racing? It seems it would be ok since its in a sealed metal container; however would it break down in the fuel pump and fuel lines?

Thanks for the help guys.

**Tdola** · 04-22-2012, 10:44 AM

Good Questions.......Subscribed...

**2006SilverRT** · 04-22-2012, 09:07 PM

Another question concerning dedicated fuel system.

I am currently running a dead head dedicated fuel system because i cant figure out the return line and the issues it is causing. I have a dedicated tank in the trunk which then goes to an external fuel pump and from there all the to the engine bay to the fuel pressure regulator (aeromotive). From there it goes to the fuel solenoid. I can adjust the pressure from anywhere to 0psi all the way up to 20psi. I run it on 10psi though. This setup has been working pretty well. Pressure seems to stay the same unless you have it on for a couple of minutes. I have been advised that I should not be doing this and need to run a return line.

So today I ran a return line coming off of the regulator straight back to the tank. Activate the system and it will not go above 4psi. I checked the tank and it is dumping the fuel back in the tank and there are no leaks anywhere. I then thought that maybe the pump doesnt pump a sufficient amount for the total amount of fuel line run ...which is about 16ft to the engine bay and 16ft back. But I figured if I was able to adjust the regulator all the way upto 20psi on the dead head it would surely go higher that 4psi adding a return line???

Any help on this would be much appreciated.

**ydahsmils2001** · 04-22-2012, 09:18 PM

Are you running a fuel injected system? I don't think you have the correct fuel pump. Sounds like a pump for a carbureted system.

Our fuel systems were designed to run at 58psi. Even running at 20 psi is still way to low.

**2006SilverRT** · 04-22-2012, 10:34 PM

Originally Posted by ydahsmils2001

Are you running a fuel injected system? I don't think you have the correct fuel pump. Sounds like a pump for a carbureted system.

Our fuel systems were designed to run at 58psi. Even running at 20 psi is still way to low.

Yea it is not tied into the stock fuel system at all. Its a complete dedicated fuel system and simply goes to the fuel solenoid then to the manifold. It only gets engaged and pumps extra fuel into the engine when using nitrous.

**ydahsmils2001** · 04-23-2012, 12:25 AM

Originally Posted by 2006SilverRT

Yea it is not tied into the stock fuel system at all. Its a complete dedicated fuel system and simply goes to the fuel solenoid then to the manifold. It only gets engaged and pumps extra fuel into the engine when using nitrous.

Still even doing that doesn't seem like enough.

What pump is it?

**2006SilverRT** · 05-03-2012, 12:47 AM

Wow....I finally got a return line system working. Previously I had been running a dead head and it worked but slowly built pressure if it was on to long. By the way thank you Lonnie and nitrous outlet for giving me a call when you saw this thread and helping me out.

To top things off as soon as I get the return line working I smell 110 octane while testing the system. I dont see any leaks anywhere and dont think to much of it. I backed the car out and there was a huge puddle of gas. I crawl under the car and check the lines and there is a cut in the return line....go figure. I cant catch a break. So I need to order a new 6an line. Is 3/8 fuel line the same as -6an???