Ok so I purchased a walbro 255 gss342 and it was supposedly for rx7 and rx8. I bought it as a kit and from amazon dot com so I hope it's real. But anyways everything I have read is about gss341 in s4's. I think the only difference is the outlet is 180 degrees opposite. Anyways my main question is will the GSS342 work for an 1988 na. All stock

Thanks in advance

 

What do you mean the outlet is 180 degrees opposite? Got a picture?

And I have to ask, why are you putting a walbro in an NA? I hope you have an adjustable FPR.

 

I mean, i have read it's an in line and no I don't have an adjustable fpr...I'll look into getting one of those, I got a walbro because my fuel pump is going out and a new oem on mazdatrix was 300 bucks vs the walbro for 100 somethin.

 

It's going to cost you power/mileage unless you get an FPR (more $) that can bypass enough flow to keep fuel pressure at stock levels. A Walbro 255 flows about 3x more fuel than most NAs will ever need. I'd suggest a new/used NA, TII or even FD pump, since they won't jack up the fuel pressure.

As far as mounting, if it looks like the one below, it should mount fine in the stock fuel pump assembly. It's been awhile since I mounted one, and I think mine was a GSS-341, but it looks correct to me.

http://www.amazon.com/Walbro-GSS342-.../dp/B000EVN7W8

 

Hmmm I'll look into cost of an fpr and an fd fuel pump lol I already have the pump so it might be a PITA to return and pay more for an fd when I could just buy a fpr.

 

Ok so fpr are not cost effective for my setup, what about this

http://www.autopartswarehouse.com/de...d=0CIABEIMIMAU

It's a denso for s4 rx7.

 

Ok so fpr are not cost effective for my setup, what about this

http://www.autopartswarehouse.com/de...d=0CIABEIMIMAU

It's a denso for s4 rx7.

 

links do not work

 

Hmmm that's odd the links work for me I'll grab part numbers

 

so how did this end up working?i am gonna replacing my fuel pump very soon,and the denso looks like a win

 

So I've searched this section but not much info came up. I know this thread is pretty old but somewhat pertinent to my situation so I didn't feel it important enough to start a new thread.

I was given a GSS342 walbro, full kit(sock, pig tail, etc). Is it compatible with an s4 t2? Or can I ONLY use a walbro gss341 in regards to the S4?

 

Most of the info is here;

Walbro Fuel Pump - Walbro 255LPH / OE Fuel Pump

Yes there is a difference between the S4 (offset) and the S5/FD (in-line) pumps.

Auto Performance Engineering - Walbro fuel pumps specs

As well as the installation kits.

Auto Performance Engineering - Walbro fuel pumps and more