hey guys i was wonering what setup u guys have on ur gsl-se webers, i have one and when i am getting on it at WOT its fine all the way through 3rd, but when i slam it into 4th it starts bucking and back firing, like its not getting fuel, so i changed the fuel filter and got a holley fuel pressure regulator tuned to 6psi... i dont know what the problem is..

 

wow

 

What fuel pump?

 

purolator 7 psi...

 

if you remove that big nut right near the inlet fitting, you will find a filter. remove the fuel filter. also, look at the design of the fuel inlet. its like a funnel meaning it has to fill up for the fuel to hit the needle and seat. Drilling out the funnel and enlarging the fuel inlet will prevent fuel starvation at high RPM.

 

check this link. im referring to #1-3

http://www.piercemanifolds.com/45DCOEa.pdf

 

What is the gph (gallons per hour) rating of that fuel pump? I like ones over 65gph for the rotormotor.

 

if the pump is good, there is no need to increase the fuel pressure as it will not solve the problem. in fact, it will make your idle worst.

 

true, i dont know what it is man, it sucks... this one punk *** kid from overton high tried to race me in his f150 and i couldnt cause my car was broke... seems like people only want to race when im down

 

For one thing the Purolator pumps are absolute ****. I initially put one on my essentially stock '82 and it wouldn't push enough to get the car moving aywhere near a snails pace. I actually switched to a universal Carter inline pump that works 200% better.

P.S.- I sell those Purolator pumps at work and don't recommend them for use in anything except for lawn mowers and tractors. You be the judge.

 

carter is also a junk IMHO.

 

Not to start a flame war or anything, but I haven't had a problem with my Carter since I got it (about 2 yrs now). Only time I see a complaint about them is because they are too noisey. Got the 7psi carter with a 1-4psi Holley FPR.

 

the reason why I said its a junk is due to inconsistency in fuel pressure. Not just one pump but several and thats including replacing the fuel filter and such. Noise can be eliminated by using a thicker rubber insulation as in beach sandals. My recently completed project RX-4 is equipped with a holley red. Its even quieter than the old FACET 6 psi pump.

 

so do any of u guys have a gsl-se with a weber on it? im lookin for somebody with my same setup

 

wow i dont think ive ever been helped on this forum..

 

I have a gsl-se with a weber on it. I still run the GSL-SE fuel pump but use a mallory return style fuel pressure regulator. I have no fuel problems at ALL.

 

well have u had problems that im having now?

 

YES, when I had a different fuel pressure regualtor that wasnt a return style one. Wouldnt allowe pressure to get high enough under load

 

do u think my holley FPR is a return style?

 

how many lines are going to it? if its just one from the pump and one to the carb its not return.

 

yeah i dont have return..

 

it can be done. this is in my FB with IDA using a MSD FI pump

IIRC, bottom is the inlet. Top right is the return.. Top left goes to the FP gauge and carb. Be sure to put a weber fuel jet or something similar where the soft return line meets the hard line. This will regulate the flow back to the tank

 

yeah that is exactly what I did. Ive never heard of using a fuel jet in the return line though. Mine does seem to work just fine. How exactly did u set that up? Have you tried before with and without the jet, and how was the difference?

 

yeah ... that's kinda cool Wackyracer. i think i'll try that setup, too. right now i'm not running a return.

 

Wheen the fuel will take the path of least resistance and run straight back to the gas tank. thats why you need the jet to make the car the path of least resistance. And your fuel pump is your problem. What jets are you running?