C4 fuel line question?
Thread Starter
Drifting
Joined: Aug 2001
Posts: 1,606
Likes: 14
From: Vacaville, CA
C4 fuel line question?
I am in the process of installing a 550-650 HP motor and have already swapped out the stock fuel pump with a Walbro GSS-307 pump. I noticed 3-fuel lines coming from the tank assembly. 1) Will the Walbro pump be strong enough for my Motor, (the folks at Precision Turbo and Engine say the Walbro will support 1,000 HP) and if not should I install an Aeromotive in tank pump? 2) Should I consider swapping out the stock fuel lines for a braided set and why are there 3 of them? 3) Will the stock fuel filter be too restrictive for my set-up?
Any inputs on this would be great!
[Modified by BlackRocket, 9:50 PM 5/30/2002]
Any inputs on this would be great!
[Modified by BlackRocket, 9:50 PM 5/30/2002]
Melting Slicks
Joined: Apr 2001
Posts: 2,093
Likes: 216
From: Ca.
Re: C4 fuel line question? (BlackRocket)
The three lines-One is supply, another is return and the third one is a "vent" line that goes to the charcoal cannistor and feeds the fuel fumes into the intake manifold when the ecm commands a solenoid to open.
I've heard of quite a few cars running that high of HP with the stock lines without any problems.
The fuel filter as a restriction? I wouldn't think so, but don't really know.
If they rate that fuel pump as being able to do the job fine-but the real test is to look at a fuel press. gauge taped to the outside of the windshield while you do a WOT run and make sure the press. doesn't drop.
And when you get that puppy runnin' could you give us some 1/4 mile times! :cheers:
I've heard of quite a few cars running that high of HP with the stock lines without any problems.
The fuel filter as a restriction? I wouldn't think so, but don't really know.
If they rate that fuel pump as being able to do the job fine-but the real test is to look at a fuel press. gauge taped to the outside of the windshield while you do a WOT run and make sure the press. doesn't drop.
And when you get that puppy runnin' could you give us some 1/4 mile times! :cheers:
Pro
Joined: Jan 2002
Posts: 596
Likes: 0
Re: C4 fuel line question? (drive it)
If you check on Jegs or Summit racing online, they sell High Flow replacement fuel filters for about 20-30 dollars. Not unreasonable at all for some extra flow through the lines. Good luck :cheers:
Thread Starter
Drifting
Joined: Aug 2001
Posts: 1,606
Likes: 14
From: Vacaville, CA
Re: C4 fuel line question? (BlackRocket)
I'm building this car for the circle track not 1/4 miler. But I'll try to run it on the 1/4 once it's finally done in about a year!!! Any other inputs on modifying or changing out the stock fuel system would be appreciated. :)
Melting Slicks
Joined: May 2000
Posts: 2,148
Likes: 1
From: Chandler AZ
Re: C4 fuel line question? (BlackRocket)
I think you're HP goals are right on the hairy edge of where an in-tank pump and stock lines will become inadequate. I see guys over 600hp running dual Aeromotive pumps and dual 1/2" fuel lines. And a freer flowing filter is mandatory; make sure you get one rated for 100psi.
FWIW I'm doing just over 500hp supercharged with the Walbro in-tank pump, stock fuel lines and filter.
FWIW I'm doing just over 500hp supercharged with the Walbro in-tank pump, stock fuel lines and filter.
