HOW TO: Walboro GS342 in a LGT

1. DO NOT DO WITH A FULL TANK OF GAS!!!! (dont ask)
2. Remove rear seats
3. remove fuel pump
4. un plug the pump from the top of the housing (blu enad black wires)
5. Unplug fuel level sender ( 4 wire clip)
6. un clip the tabs holding the lower housing on (see pic 1)
   and remove lower part of housing
7. Compress teh housing and remove the C clip that is on this shaft (pic2)
8. and slide it all off unplugging all the appropriate things attached to it its easy)
9. remove the OEM pump from the housing through the accessholes that clip it in
10. take some paper towels and plug the holes in the housings that have fuel in them for the next step
11. Take a dremel with some form of grinding tip, and grind down the tabs around the housing that prevents the walboro from sliding all the way in (pic 4 )
12. then grind down the walboro as shown (pic 5)
13. You WILL need a new O-ring ( measure ments coming tomorrow)
14. slide the oring and the lower "o ring pusherupper" (youll see it ) onto the walboro
15. swap the lower filter
16. slide the walboro into the housing and push her in (DONT FORGET TO REMOVE PAPERTOWEL PLUGS!! from step 10)
17. re assemble as you took apart, if you did it right the lower case will close over the assembly tightly
18. re install and be happy

MORE COMING


its in my car and runnin!!

leaving people hanging huh

trying to fix access issue from the shop

Sounds like your day and mine started similarily. I wound up with gas spewing all over me while pumping gas and I was all decked out in my work clothes

Thank you very much for sharing this with us!

so how much cheaper does this make a pump upgrade for us?

So is the only thing securing the pump outlet to the filter housing, the lower bucket? Is this durable enough to keep 60-70psi sealed long term?

Just thought I'd ask, because I was under the impression that there was some clamping involved in keeping the pump locked into the fuel filter inlet...

Nice work John, and kudos to you & your crew for not trying to keep this a secret any longer!

Originally Posted by edmundu

So is the only thing securing the pump outlet to the filter housing, the lower bucket? Is this durable enough to keep 60-70psi sealed long term?

Just thought I'd ask, because I was under the impression that there was some clamping involved in keeping the pump locked into the fuel filter inlet...

Nice work John, and kudos to you & your crew for not trying to keep this a secret any longer!

the thing is IN there and the bottom cup presses it in pretty hard
i cant see any otherway to clamp that bugger in there

plus the housing rests on the floor of the tanks pressed against the springs and the top

seems like itll hold well *shrug*

just thought i would deshroud the mystery

Nice, thanks for sharing.

Cool stuff! Thanks for sharing!

It's great to see respected tuners/shops sharing technical knowledge for the benefit of the community at-large! Thumbs-up!

Originally Posted by TDC Tuning

1. DO NOT DO WITH A FULL TANK OF GAS!!!! (dont ask)

^ All-right, where's the live-action video of this pwnage? That's gotta be a good one!

Have you monitored your fuel pressure?

I would have tried this route but at the time figured those little nodules inside the tube that the walbro outlet slips into would hit.

Interesting.

Originally Posted by MDTURBO

Have you monitored your fuel pressure?

I would have tried this route but at the time figured those little nodules inside the tube that the walbro outlet slips into would hit.

Interesting.

hey rob, i went out and streeet tuend my A/F trims
all were pretty much dead on ( no learned)
so it seems to be doing well

bling bling. Awesome work Jon. I suppose I have the luck of having that extra housing. Thanks K!

jon,

thanks for semi-devulging our fuel pump assy secret. But since its already semi-out, i might as well chime in to hopefully make people understand that this needs to be done properly

The 0-ring will definitely need to be changed as jon says in #13 to ensure there is no pressure loss, this would manifest itself most likely when you turn the inginition on and immediately try to start car, it would not, unless you prime the pump fully

in #15, can you elaborate how you reinstall or replace the bottom filter?

#15 is VERY important as you said the bottom pump filter presses hard against the bottom bucket, my concern here just as MTS pointed out, is loss of fuel pressure there.

Thanks jon

PS
PLtek,llc

Originally Posted by pszydlik

jon,

thanks for semi-devulging our fuel pump assy secret. But since its already semi-out, i might as well chime in to hopefully make people understand that this needs to be done properly
PS
PLtek,llc

im not trying to be incindiary here but YOUR secret?
This has nothing to do with you guys. After the weekend i had w georges car needing this i decided to rip mine apart and see what happens. I has nothing to do with you
nor is it a PLTEK exclusive idea, Harman motive have tried and MTS have tried.
i simply made it work for me. Im sory if that offends you or has hurt your feelings in some way, but now you can sell MORE of the ones you do because people KNOW how and why it works ! I dont plan on selling this, it was merely informational

As for step #15 you just pop it oof the old one and pop back on the walboro
very easy, i tuned my car with the 18G and has PLENTY of fuel up top on stock inj
where on a 20 g the week before i had NO fuel even with modded injectors

thanks for the help on the O- Ring
maybe we can engineer a even better way!