DIY - Walbro 255 fuel pump retrofit.

[lateracer]

I didnt do it this way I hooked it up normally, then made a few bends in both lines and cut a section off the feed line for some clearance. The only modification that I made to the pump was I pulled the factory wiring connector off the pump assembly and ran new wires through the hole and filled the little hole with gas tank putty.

I have an early dual pump setup and the in-tank died. I installed the TRE pump in place of the old one, but haven't tested it yet (still got motor work up front to address).

Can you explain this fix a little more? Not sure what you mean with feed line...mine is still in place. What did you bend and what did you cut off?

[Danny]

Cheap alternative.

Also I used zipties.

[mkcman17]

what's the point of this? does it allow for more pressure or is it just a cheap alternative?

[DÌEGØ]

good to know, thanks!

[homegrone30]

edit: the early style E30s with external pumps have a weird pick-up assembly and require a bit more work to make either of the above-mentioned pumps work. you will need to brake the weld on the return line to the pick up line and straighten the former...

I didnt do it this way I hooked it up normally, then made a few bends in both lines and cut a section off the feed line for some clearance. The only modification that I made to the pump was I pulled the factory wiring connector off the pump assembly and ran new wires through the hole and filled the little hole with gas tank putty.

[homegrone30]

so does anyone know if this will work on an early E30 with an external pump?

ultimately I wanna run the 255 and just dump the external, has anyone done this?

I just did that exact thing this weekend and it seems to be fine. The only thing that I could see as a problem is the wahlboro crapping out premature from trying to push through the other pump. But thats just my

[nasty50]

wow thanks for this dyi iam going to save hella money(fuel pump went bad recently).called around for fuel pump for my e30 and got qoutes from $220 to $350.i also owned lots of mustangs and have stock fuel pumps and walbro 255.needless to say iam going to be on this asap.thanks again.

[DÌEGØ]

Would also like to know this as well...

i searched around and found a couple people that have upgraded their in-tank pump to a tre or walbro and kept their external with no problems....furthermore I believe taking out the external should have no ill effect either. I'm still planning on replacing my in-tank with a walbro 255 but i havent decided if I'll leave it or go single pump....hope that helps ^^^


edit: the early style E30s with external pumps have a weird pick-up assembly and require a bit more work to make either of the above-mentioned pumps work. you will need to brake the weld on the return line to the pick up line and straighten the former...

[gemztoy86]

Would also like to know this as well...

[DÌEGØ]

so does anyone know if this will work on an early E30 with an external pump?

ultimately I wanna run the 255 and just dump the external, has anyone done this?

[Dj Buttchug]

i need to do this on my car. nice pics!

[DÌEGØ]

nice DIY! thanks

[Fusion]

Thanks for this. Just got done with this mod and the car runs great.

[EricT]

I know when I get down below say around 1/4 tank...under hard acceleration I experience some starvation issues in the form of mild hesitation. I noticed above that fuel level mark the car runs fine.

[Jean]

The two pump system with the addition of a small aux gas "tank" can eliminate any/all fuel starvation issues vs. running 1 pump.

Also, keep in mind how/where the fuel return line goes on the cars with 1 pump vs 2 pump systems...one goes to the intank pump, and one goes to the gas tank..