Hey guys, I recently purchased a couple of parts from an org member including a Wallbro GSS342. I'm currently in the process of building the 3.0L, with compression ratio at 9:1, I'll have the heads port & polish with better valves & spring, new cams, injectors, headers, a Vortech V2 & what ever is required to properly tune this beast. So does this Wallbro is the best choice for this set-up.

Thanks & have a good one.

AA

 

Walbro is the most commonly used high flow fuel pump, but they have a little bit of a reputatoin for premature failure. They are a good pump and are relatively inexpensive. If you wanted something better you could go with the Bosch inline pump

 

With the kind of money I'll be puttin in this project, I'd rather not have to replace the fuel pump once everything is done. Do you know of any online shop that I can order ?

Thanks I really appreciate your input.

AA

 

i would just go whith the walbro. most high performance cars that you see in magazines use the walbro. you can get it on e bay for about $80 shipped and you can put it in your self.

 

The walbro should be fine. I would hard wire it to get it better voltage as this could be the reason some people have had problems with it.

 

Ok I already have the WallBro GSS342, but I'm still going to verify for the Bosch as well.

 

on year #6 with mine....

 

Walbro should be fine as long as:

you hardwire it directly to the battery like Spig said.
have the high flow model
don't go below 1/8 tank too often.

 

The Wizard is spot on the money: DO NOT get below 1/8 tank at all to be safest. These pumps are high velocity spinners and at that rate, if it's sipping for gasoline along with air pockets, it'll decapitate the pump prematurely. GSS342 is a direct fit, and I doubt hardwiring a direct power source is the remedy. I'm leaning towards air pockets in the pumps doing the magic at that velocity.

 

The reason some recommend to hardwire the pump is because some 4th gen models have the fuel pump control module, this keeps the pump running under a lower voltage than 12v, its rpm and load dependent i believe. so if the engine has certain load or at certain rpm the control module will raise the voltage of the pump. If you disconnect the drop resistor that connects to this module and ground the pump directly to the chassis (drop resistor provides a controlled ground to the pump which changes the voltage) this will allow for the pump to run at 12v or w/e the car's voltage is when on, 13something.

I am pretty sure this control module crap was only in 97's

I say you go with walbro.

 

Can someone tell me what a GSS341 is?

DF

 

EDIT: The difference is in their inlet and outlet styles:
http://autoperformanceengineering.com/html/fppumps.html

-Peter-

 

I have this same pump and I tried installing it yesterday. I tested the pump before I installed it. I wired it to a battery and it works fine. Then I installed it on the stock setup. after reinstalling it it doesnt work.

 

The walbro should be fine, but we do carry the Bosch inline as well

 

Can I get the gss341 to work? I realize it has the filter thing go off on the other side, but I have one sitting somewhere....

DF

 

The gss342 is an inline design, the fuel gets pumped in the tube straight from the inlet to the outlet, I'd get 342 itselft for a supposedly improved fuel delivery.

-Peter-