Walbro cut cup picture - Boost Forum

Forum Post / Reply
You must log in before you can post or reply to messages.
Walbro cut cup picture
Saturday, April 08, 2006 4:21 PM
If anyone has a picture of a cut cup for installing a walbro 255 so I don't get fuel cut, could you pretty pretty pleaaase post it or at least give me a lil description of what to cut....the picture links don't work anymore for the install alex wrote up...ty


Kyle

Re: Walbro cut cup picture
Saturday, April 08, 2006 4:57 PM
http://www.j-body.org/forums/read.php?f=40&i=73328&t=24017#73328

Thats the post that had the pics. The pics don't work in the post, but if you copy/paste the links for the pics, I think they still might.





4cyltuner.com - Information Source For 4 Cylinder Tuners
Buy stuff from CarCustoms Ebay! Won't be disappointed!

Re: Walbro cut cup picture
Saturday, April 08, 2006 5:29 PM
I redid the post and i previewed it and it worked fine so here ya go if you need to print it out.

ok well this weekend i finally decided to install my walbro fuel pump.

Pump number: GSS340M
From: http://www.autoperformanceengineering.com/

When you order it ,tell them that you are putting it on a cavalier. and to send a installing kit, which costs $15 (give or take).

you need the o ring, a new accordion looking tube, or you can use the stock one if you don't mess it up.
the wire connector.
clamps
and the filter. (white sock)

To drop the fuel tank, you just need some disconnect tools for the fuel lines. Re-leave the fuel pressure before u do them, it makes it easier and less messy.

Once you have the tank out, and the fuel module out. the "cup" looks like this.....


You need to modify the cup so that the pump gets fuel.

For all the people who had trouble under a 1/4 a tank of gas. this is what you do.





You can see how much i cut. basically the whole bottom. You do know need the plastic tube that is inside the module, or the little yellow thing.

Make sure to have the accordion tubes on all the way. and clamp them down.

Also, you can see how the connector was plug and plug, no cutting or anything required.



Make sure you have the fuel pump all the way down. You use the stock rubber cup thing that the stock fuel pump was in. its hard to get down into the hole, so lube it up some. and it will go down.

Also the tube was hard to get on, did the same thing. I also made a small slit on either end of the tube, to get them to stretch over the nipple type things. Only do that if you cant get it on, otherwise you might cut too much, and have to get a new tube.

I think that is all there was to it. Put the fuel tank back in, and disconnect the lines.

When i started the car i had less then 1/4 a tank of gas and it started perfect. I primed the pump three times just to makes sure. And i bypassed my msd inline.

I drove it around, the car feels so much better. My egts are 200 degrees lower, and my car doesn't have a hesitating feel, like it did with the msd inline.

Huge thanks to Nick, Changeforabutton. He basically walked me through a ton of it. Especially the cutting and what not.





Re: Walbro cut cup picture
Sunday, April 09, 2006 3:14 PM
very nice, I have heard about this, and I just stepped into this one, and this is perfect, thanks for the pics too, that should be really helpful, my pump goes in on thursday



HP Tuners | Garrett T3/T04B | 2.5" Charge Pipes | 2.5" Downpipe | 650 Injectors | HO Manifold | Addco front/rear | Motor Mounts | HKS SSQV | Spec stage 3 | AEM UEGO Wideband | Team Green LSD | FMIC | 2.3 cams | 2.3 oil pump swap | 280WHP | Now ECOTECED

Re: Walbro cut cup picture
Sunday, April 09, 2006 9:12 PM
cutting the cup (module) is just one way to do it. and its a backwater kind of way. just buy the right pump and dont worry about the fuel cut. 255lph is overkill for just about anything you can do to a j-body. the walbro 255lph is used in the ZO6 and the ford GT. walbro make a 188lph pump that was used in older corvettes, it also has the jet barb which is the whole issue with the fuel cut. i would say just look up that pump and get one, drop it in and dont worry about it.


Guess how much we owe New Orleans..........nothing
Re: Walbro cut cup picture
Monday, August 21, 2006 6:13 AM
i got a uncut cup walbro pump and i get fuel cut under 1/2 tank.

between 1/4 and E i ran outta gas. fricken sucks

what you use to cut the cup? do you cut both sides? i only see the side that you cut. i forget what the other side looks like.

thanks for the write up, it wil help me out.

jake




Re: Walbro cut cup picture
Monday, August 21, 2006 6:54 AM
Has anyone figured out why some people get fuel cut and some like myself dont have any problems with teh walbro? Just curious...............



Car is for Sale!Supercharger kit is for sale!
Re: Walbro cut cup picture
Monday, August 21, 2006 7:58 AM
^ you cut your cup?

my thoughts are my accordian tube thing may be kinked, i doubt it though. IF it was i would assume it would run @!#$ty at all times.

but i think the cup needs to be cut, i have that little brass fitting hooked up and still have problems.

just getting sick of the ghetto rigging crap that goes on with modifing these cars.




Re: Walbro cut cup picture
Monday, August 21, 2006 8:16 AM
No my cup is NOT cut. All i did was install the walbro and install the sending unit.....The brass fitting I dont even have that hooked up. That black hard tube that used to hook to it is just sittin in there unhooked.

When i installed my pump i had a brand new sending unit also(courtesy of the shell gas recall). So maybe the new unit made a difference? I dunno.



Car is for Sale!Supercharger kit is for sale!
Re: Walbro cut cup picture
Monday, August 21, 2006 8:50 AM
mm.. i need to do this mod soon too. Anybody else not have problems after cutting the cup?

Blue splash

GSS340M is the pump with the large center inlet (high pressure), correct?

Nate



Evolution of Cavyboy-->C22t--> C24na--->c24s/c
1995 Cavalier W/2k1 Engine
GM S/C 13.940@99.78pmh w/2.068 60ft
Forum Post / Reply
You must log in before you can post or reply to messages.

 

Start New Topic Advanced Search