Walbro 255 fuel pump

[skodaspannerman]

Hi All. I have heard a few people have gone this route with the VRS, and I have recently done so. I have heard of people suffering with fuel surge/starvation when running low fuel levels and cornering round right handers....

Is anyone running this pump and still suffering this problem?

Cheers y'all.

Bu

[snow_muncher]

Have a read of this thread: REVO verses SHARK

[Liverpool-Lad]

Is this a known issue just related to that pump or in general?

[skodaspannerman]

Thanks for replies, there is a slight flaw in the conversion, the walbro needs some adaptation to work correctly. I have found a solution, I was wondering who else had done the conversion and suffered the surge/starvation problem.

[Bowders1]

Hi All. I have heard a few people have gone this route with the VRS, and I have recently done so. I have heard of people suffering with fuel surge/starvation when running low fuel levels and cornering round right handers....

Is anyone running this pump and still suffering this problem?

Cheers y'all.

Bu

As quoted in thread REVO verses SHARK

I have recently fitted one to my VRS. I too was aware of the threads about starvation.

I think some of the issue is around how the pump is installed in the first place. Some folks seem to fit a GSS342 version which is more generic in that it has a bottom outlet off centre and that then uses a slightly different flow area and filtering which means you can't fit it low enough. Have also seen a link to a mod to the lower section of the std plastic pump housing to get around this.

Secondly if the pump is not fitted tightly and level (using rubber sock) it can move about which is not good.

I found that the GSS340 version is less generic and more suited to the VRS in that is has a central outlet at the bottom no need to fit seperate piping and filter as the outlet has a built in filter on it. Therfore the pump can sit lower etc.

The minute I put pump in it filled up nicely. Also was almost out of fuel the other day well into red and no starvation issues and conrning issues so I am happy with mine.

Although not much of a technical response mine works fine.

example of the GSS340 i used (see the red part at bottom of pump) I did not use the seperate filter

http://www.ebay.co.uk/itm/Ford-Escort-Cosworth-WALBRO-Fuel-Pump-255lph-GSS340-/110829022860?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item19cdecae8c

also key part is the rubber sock.Should come with kit if not example.

http://www.ebay.co.uk/itm/WALBRO-IN-TANK-FUEL-PUMP-FOAM-SOUND-SLEEVE-FITS-GSS340-GSS342-GSS341-MORE-/280756578449?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item415e656891

Example of GSS342 can see the bottom outlet is off centre.

http://www.ebay.co.uk/itm/WALBRO-255-FUEL-PUMP-FITS-MINI-1-3i-Spi-Mpi-1992-/150528616070?pt=UK_CarsParts_Vehicles_CarParts_SM&hash=item230c346686

Thanks for replies, there is a slight flaw in the conversion, the walbro needs some adaptation to work correctly. I have found a solution, I was wondering who else had done the conversion and suffered the surge/starvation problem.

interesting to know what you did.

[skodaspannerman]

Thanks for response, the walbro sits low enough, imho the key is in the fuel return, and seeing where it returns fuel to, as the std pump picks up return fuel to avoid starvation on rh bends, using a secondary pick up point. Have modded pump to do this, in process of des and fab of a one off part to do this.

[snow_muncher]

My pump is mount via a bracket, no swirl pot

As you can see from pic, it originally had the filter direct on the pump

This caused starvation

now has tube of bottom of pump to bottom of tank, this filter on end of

Bowders1 fitment is better as eom swirl pot retained

[Bowders1]

Thanks for response, the walbro sits low enough, imho the key is in the fuel return, and seeing where it returns fuel to, as the std pump picks up return fuel to avoid starvation on rh bends, using a secondary pick up point. Have modded pump to do this, in process of des and fab of a one off part to do this.

I get your point, however the the std pump has no lower pick up point than the Walbro, so in terms of getting fuel from a empty tank and keeping the fuel pumping around corners etc, I would expect the std swirl pot to take care of this? no...

Is'nt the idea of the swirl pot to keep the level / reserve of fuel constant...

[skodaspannerman]

I know the std pump does not pick up any lower than the walbro. The inlet at the bottom on BOTH pumps is low enough for the main feed. the trick on the STD pump is the secondary inlet, that picks up from the fuel return, hence avoiding starvation..... The "swirl pot" is just a chamber that fills from the return pipe and the standard pump picks up from this via the secondary inlet into the pump......Which the walbro does not have....hence the mod.

[snow_muncher]

The "swirl pot" is just a chamber that fills from the return pipe and the standard pump picks up from this via the secondary inlet into the pump......Which the walbro does not have....hence the mod.

Got any pics ?

Really not sure what you're describing here

[Bowders1]

I know the std pump does not pick up any lower than the walbro. The inlet at the bottom on BOTH pumps is low enough for the main feed. the trick on the STD pump is the secondary inlet, that picks up from the fuel return, hence avoiding starvation..... The "swirl pot" is just a chamber that fills from the return pipe and the standard pump picks up from this via the secondary inlet into the pump......Which the walbro does not have....hence the mod.

Pics would be cool buddy..as it sounds like you have a potential solution for users considering this route...

[Liverpool-Lad]

Is it known the std pump is a weak spot, or is this just purely for belt and braces?

[snow_muncher]

More powerful pump, to support bigger injectors

Pointless otherwise

[skodaspannerman]

An uprated pump is pretty much an essential on a tuned car. The std pump does concern me for high outputs. and for the money I would rather feel secure in the knowledge there is enough fuel being supplied. The walbro (with mod) seems to do this quite nicely.

Will get some pics when I next strip a pump out and either show the home brew or the fabricated method of rectification...

This may take a little while as the day job seems to be quite demanding at present.

[Gonzaga]

Is the pump loud? Did you trim some plastic out or this is a direct fit?

[Bowders1]

Is the pump loud? Did you trim some plastic out or this is a direct fit?

The Walbro is louder than the std pump, and you can here it humming (not too intrusive) The rubber sock that it comes with does help reduce sounds as well as keeping it tight in the swirl pot. I did no triming on plastic with mine.

[Gonzaga]

TNX Bowders! I`ve been searching on ebay for genuine walbro pump but i am not sure if they are original or Chinese copy. Do you know any trusted ebay source that ships worldwide?

Best regards

[Volvomeg]

Mine has standard setup and really doesnt like been low on fuel, its starts getting abit jumpy when it gets down to 10 miles to empty.

Think if i fitted another pump i would get another sender unit and fit it into that then just swop them over

[Bowders1]

TNX Bowders! I`ve been searching on ebay for genuine walbro pump but i am not sure if they are original or Chinese copy. Do you know any trusted ebay source that ships worldwide?

Best regards

attach the link so we can see .

This is a gen one.

http://www.ebay.co.u...=item19cdecae8c

[Gonzaga]

Sorry for bumping the old thread, but I have a question regarding fuel starvation. After installing the Walbro gss340 pump with 3 bar fpr iircc everything was ok but after upgrading the fuel system to 4 bar, **** started to happen. In right hand turns car starts to buck and stall which indicates a problem with fuel starvation. In every other situation like left hand turn or accelerating really fast has no problem.

I have noticed that the stock fuel pump has secondary inlet roughly 1 cm from the bottom of the pump, on it`s side and this sucks the fuel from the swirl pot. The problem is that walbro doesn`t have this and if installed like bowders did you are essentially blocking the fuel return line.

I am planning to take PVC tube, roughly 2cm in length and attached it to the inlet of walbro pump and let it sit to the bottom of the fuel pump assembly, this way the pump will sit higher than bowders pump, approximately 0.5cm higher but I will also drill 1-2 holes in the PVC tube so the pump can also suck the fuel from the swirt pot.

Do you have some suggestions regarding the install? Did somebody resolved this problem in some other way?

Best regards

Edited 5 January, 2013 by Gonzaga

[Bowders1]

I do not get any starvation on mine and have messed with 3 & 4bar fpr's.

Also ran almost completely dry tank.

What you state sounds logical to fix your issue though.

Sent from my GT-I9300 using Tapatalk 2

[Gonzaga]

Do you have some additional pictures of the install? Did you put the black rubber at the bottom of the pump and foam sleeve on the back?

Best regards