Sudox_E

Hey guys, I was recently running an aeromotive fuelp pump with a max pressure of 16psi (I thought it would cut it on my turbo blowthrough setup, I was wrong!) but it couldnt maintain pressure under boost, and really just wasnt designed for a turbo application. I'm thinking about going over to a Walbro 255lph fuel pump, as theyre pretty cheap, and can maintain plenty of pressure and flow. Does anyone have any experience with these pumps? Am I going to be able to set my fuel pressure low enough at idle? I have an aeromotive return style fpr, with a 3/8 in return line, and I didnt know if the fpr could handle the increased pressure. I'm not sure, because my aeromotive pump actually flows a LOT more than the Walbro, but I can still set it down to about 3psi. Anyways, someone let me know.

Also......

I keep going through fuel pumps on this car, because I decide I have new power goals, and change my setup, this is getting ridiculous! My aeromotive is listed in the 1st gen for sale section, and my carter 6 psi fuel pump which I installed but never got a chance to drive on before I started switching to turbo is for sale too. I'll sell it for $40 if someone is interested. PM me!

Sudox_E

I'm bumping this bad boy up. I know some of you turbo/FI guys have to have some knowledge on this. And who doesnt want a carter fuel pump for cheap????

z-beater

I have no experience with the walbro, however, there are a few local 1st gen guys that are using the walbro. I decided not to go with the walbro because people say that it is only good up until 400rwhp. Some people get 450 to the wheels but this is with a direct power source to the pump itself. Since I am running it off of the microtech I wanted to make sure that I had more than enough fuel. Not to mention we know what happens when you run a rotary lean.

What kind of power are you putting down?

I went with an aeromotive a1000 with my setup because I have seen a lot of the higher hp 3rd gens run with this pump. I did consider going with twin walbros but decided for 100 extra to just go with the a1000.

I will let you know on start up what I experience with the aeromotive.

Z

Sudox_E

That's good to know, though I don't plan on going over 300rwhp any time soon. Sounds like the Walbro should do fine then.

z-beater

Yeah, the walbro should be more than enough. There is one guy locally that has a turbo FB with a walbro. He just dyno'd at 208 at 8psi. All signs with fuel seemed to be A-ok.

If you want to do some more reasearch head over to the single turbo section and look up "walbro". You will be amazed at the results.

Also a note of caution. When I was talking to the guy that had the walbro he said that he had to get special fittings. I cannot remember where he said that he purchased it. Just make sure that you check what fittings are needed to connect fuel before buying.

StricklyOldskool

You can get the fittings for the Walbro to fit i the stock location on a GSL-SE. The fittings and pump can be ordered from www.fuel-pumps.net and the fitting numbers are [ 128-3075 and 128-3025] I am currently running a Walbro and can say it gives plunty of fuel. When at idle [car idles at 750rpm] the voltage going to the pump dropes to 11volts which in case will lower the amount of fuel delivered. I have a Cartech FMU which is boost dependent, this means that for every pound of pressure that builds above atmospheric pressure in the plenum, it will raise the fuel 1 to 12psi....depends which you desire. When I dynoed my 13b 6port running 5psi on stock setup along with stock ecu I had more than enough fuel through out the entire rpm band.

Hope this information helped with your debate. ;]

RotaryRevn

Anyone know if that pulsation damper that comes on the stock se fuel pump is needed when upgrading to an aftermarket pump? I bought a bosch pump for my turbo conversion but the threads on that side of the pump don't allow me to screw on the pulsation damper. I did go to the junk yard and get some brass caps that will screw onto the end of the pump in place of the pulsation damper but don't know which way I should go with it. I have even considered selling the bosch and going with the walboro so that I could make it like a stock fit with the pulsation damper as sceen in the chronicles of a t2 swap. Also, does using an aftermarket fuel pressure regulator maybe make up for not having that pulsation damper?

thanks

Sudox_E

Yea, I had heard about the deal with needing special fittings. it looks like a lot of places that sell the Walbro's offer them. Haha, now as soon as I can sell my old Aeromotive, I can buy the Walbro, and then continue on to other projects. I'm going to try to dyno my car this summer, and take it to the drag strip, but first I'd like to make a tubular turbo header and upgrade the ignition.

680RWHP12A

the walbro pump is the perfect pump for blowthrough applications!! the carburated type fuel pumps wont make enough pressure on a blowthrough applicaton, bottom line!! dont bother with the tubular exhaust header save your money.. im using an old cast exhaust manifold with no complaints..

Sudox_E

Well, the old cast manifold put my turbo exhaust housing about .5" away from the intake manifold. And that's no good. Plus, I really need everything I can to get the car to spool up as quick as possible, the bottom end is kind powerless without the turbo... Anyways, I'll let you guys know how this Walbro works out. My aeromotive was kind of loud, I hope the Walbro isnt quite as bad