Walbro 400 LPH Fuel Pump
 

Hey guys

so i just picked up this new release from Walbro

its they're new 400LPH fuel pump
i was after the Aeromotive Stealth 340LPH
but my distributor told me about this, apparently their flying off the shelves
not to mention its about $30 cheaper the Aeromotive

its a little bigger than the 255 at the base so i'll probably have to do a little bit of modding to get it to sit right, but it shouldn't be an issue

I'll post more pics of the install tomorrow
but for now heres what it looks like

Attachment 724480
Attachment 724481
Attachment 724482
Attachment 724483
Attachment 724484

very interested to see the fitment... ive been planning to get the aeromotive 340, but if this doesnt require too much modification i might get it instead

subbed

on my way to the shop now

i'll be posting up tonight after everything goes in the car

I hope you didnt pay more than $200 for that thing..

Why do you say that?

Nice!

because even the 255LPH pumps were known to have issues. plus you can get the stealth 340 for about $165 shipped.

they also do not even appear to be actual Walbro units.

i'm having serious doubts about it seeing that it is sold by TRE performance, a known walbro knockoff distributor and also references from TI automotive. Walbro has always had easily identifiable markings in the past as the big "W" stamped onto their cases, why would they stop now?

the old walbro knockoff pumps have issues with warm flow hydrolocking after shutting the pumps down and attempting to restart your car, obviously due to inadequate design. although they actually flowed decently, who cares if you get stuck in a parking lot waiting an hour for your fuel to cool in order to start your car.

this all took about 2 minutes of investigating.

I'm all eyes for this.

I just picked up mine this week too. I didn't get install kit cause it was just simple wiring

*sigh*

i foresee a rash of blown motors in the future. i hope you guys at least do your own volume tests before running these things to their potential, or possibly lack thereof.

fuel pumps and injectors are the heart of the reliability of any force inducted car.

edit: i did find out that TI merged with Walbro recently but i'm still skeptical about the reliability of an even larger pump over the issues they had with even smaller units.

Aeromotive has been having BIG issues with the Stealth since it's release.
real Walbro pumps have been very dependable and are only $99 at my buddies shop..

either way.... all this is why I went with the tried and true BOSCH pump....

I have one of the 255HP ones, running up to about 360whp on stock twins for years no problems.

I have an uninstalled Stealth 340 but haven't installed it because I already saw people have issues with it and also saw the Walbro 400 so I might go that route instead.

i figure they each will have issues, i don't see how well of a reputation either could have after only been released for a short period.

point is don't jump on something because it's supposedly bigger and better., let other people test it out first.

subscribed

i agree its very good to be cautious with newly released parts, especially something as important as the fuel system...

but if everyone has the "let the other guy test it" mentality, then everyone will be waiting around for someone else to do it and we will never know :lol::lol::lol:

(This is my personal Opinion)
For me personaly i like to look beyond the norm. Some times what looks good on paper doesnt neccesarly work well in real life. Some things have to be looked and dissected using your common sence. I looked @ both the walbro pump and the stock Denso FD pump, the stock supra pump, audi pump, dodge pumps and a few others and i have never seen a fuel pump quite like the walbro. I comapared the walbro with other pumps and by a simple look and feel its so damn obvious how cheap the walbro pumps realy are. There is just no rational explanation of why an aftermarket fuel pump that would out perform a stocker would cost cheaper new than a stock fuel pump used!!! The aeromotive fuel pump is identical to the walbro exept color and logo. It should be a dead give away how cheap the walbro fuel pump is by simply looking at the power connector walbro provides.. Thats the kind of shit you find @ autozone.. Correct me of i am wrong but if you spent more than $200 for that pump you lost- u shoud have upgraded to what realy works BOSCH 044. Its been proven year after year. (again this is my personal opinion not facts)..

According to Buschur Racing, these have been in an OEM application for a few years thus should prove quite reliable.

http://forums.evolutionm.net/evo-eng...-any-info.html

physical appearance/feel and cost does not necessarily correlate with quality.

Bosch044 = bigger, heavier, more expensive
Aero340 and Walbro400 = smaller, lighter, less expensive

Is the Bosch better quality because of this? Or,

The 340 and 400 supposedly flow equal or more than the Bosch, are they better than the Bosch because of this?

What ever happened with better designed and manufactured products, i.e. higher performance and quality at less cost and weight? Can we not think this is the case?

Also looking forward to more reviews on this. I had an original Walbro on my twin setup. It ran perfectly for 2 years when used. However, I went with a SRD 280lph when I went single. This is essentially a Supra twin unit. I will likely run dual SRD's when I crank the boost.

Personally, I dont trust the Walbro's.

actually there is.

the stock pump is a model-specific production run part for a low volume specialty car, and is only designed to handle the fuel needs of the stock powerplant. lower volume runs requires a higher price to be profitable.

the aftermarket pump is a universal in-tank pump made in higher production numbers with one model used across many different vehicles, and is designed to offer higher fuel volume than OEM application.

when you mass produce a universal part, its always going to less expensive than a low-volume model-specific part.

usually if you follow that mentality you can pick up most anything off the shelf these days, they're lighter and cheaper.

pick up something 40 years ago, it was heavy and bulky and cost more because of the heavy duty construction. do TV's last 40 years anymore? nope, they last about 5 on average.

our '83 mercedes was rearended, literally tore apart the car that hit us, cracked the plastic tail lamp lens on our car and that was it.

point is, yes, weight usually can be a contributor to how well an item is constructed. you are also correct that things can be made lighter and almost as durable, but these days almost all manufacturers have tunnel vision which is to survive for the time being, not to make a product that lasts for 40 years.

look at most other high volume pumps which are external due to their size but they are massive in comparison. you simply can only push something so far before it heats to the point of eating itself alive. i imagine these pumps will fail due to cooling, unless you always keep your tank above half full their volume doesn't match their design.

i'm mainly skeptical because they give you a crappy jumper connector with the pump, these pumps are obviously going to eat up some amps which has already caused numerous FD pump connectors to fail.

I have yet to find a real tuner/racer holding records running walbro pumps.. All the high HP guys i know of run dual bosch or external single units.

And this is why you trust it? Low quility is Low quiality.

This... I am glad i am not the only one to see this ;)

I ran the original walbro 255 for 5 years@ 375 whp with zero issues. I am going to give this pump a shot if it is original walbro quality. Looks like that jumper may be a problem though. G

ok so here we go guys

well first make sure you guys also check out my build thread:
https://www.rx7club.com/build-threads-292/my-cars-build-thread-project-roxy-959587/

finally got home after a longggg day of fighting with my car

ok so first i want to say that THIS IS NOT A KNOCK OFF!!! lol this is the real deal
i buy directly from manufacturers only, or through reputable wholesale distributions that are certified by the manufacturer...in this case i ordered pump along with all the other stuff i need for the build from Motovicity...so it is a real Walbro, no worries

the Walbro install went quite smoothly except for 1 thing

The filter that this came with this pump is quite large and it doesn't sit the same way the 255 one does (you'll see what i mean in the pics)

i'm not sure if it was the proper thing to do so if you guys think what i did isn't a good idea then please let me know...i used the filter from the 255 and put it on the new 400, does anyone think this will be an issue? its a bit smaller

ok so basically this is the write up on the install, it was very straight forward and done with basic hand tools

a phillips screwdriver and an exacto knife

step by step

1. remove your fuel pump from your car (duh)

2. take the rubber spacer thingy that the holds the fuel pump in and shave it down because 400 fits a bit differently than the 255
i basically did it a little at a time until i was able to put the bottom bracket back on while still getting a good seal from the fuel pipe to the pump
for this i used an exacto knife

3. use the provided harness adapter to plug in the new power wires

4. install in the car

i would really appreciate it if you guys could take really good looks at the pics and tell me if i did anything wrong of if i'm missing anything

one thing that i left out on the install is that plastic spacer thing that goes on the outlet of the pump to the fuel pipe. it doesn't fit on the outlet of the 400 because its too small
is that spacer thing necessary

let me know what you guys think

here go the pics

Attachment 724485
Attachment 724486
Attachment 724487
Attachment 724488