The Fuel Pump Thread

[The Mafia]

Hey everyone

I've noticed there isn't much into on fuel pumps etc when searching the forum so I thought I would add some of my own stuff.

So here is a bit of info that I can give. I am also after a few other opinions.

I'm a Nismo man, I have never had any issues with the Nismo 275lph pump that they make a drop in for most Skylines. Problem is, these don't have official E85 support.

I've been looking at these pumps:

1. Walbro 400lph E85 Pump (Apparently some issues with priming?)

2. Deatschworks 320LPH Version 2 E85 Pump

3. Bosch 044

4. Nismo 275lph Straight drop in

Okay... so there are other catches... like factory wiring. Does anyone have an idea on what sort of amperage the factory wiring can handle? I've been looking at flow charts and comparing amp draw with PSI etc.

Here are some flow charts.

Walbro 400lph

Deatschworks 320LPH Version 2

Random Pumps

Deatschworks 320LPH Version 2 again

The FLow charts are definitely interesting.

My intentions are:

Replace the factory fuel pump in my BNR34 with a decent pump that will do 400awkw, and from there, when its time to go for more power, I will add an aftermarket industries surge tank, and use the twin Holley Dominator 1400 pumps to feed my injectors. (ID 1300cc Stainless)

Currently installing 2 x HKS 2530s and supporting mods.

Your input would be appreciated.

The Mafia

[XKLABA]

The early E85 walbros had an issues if not submerged fully, the later not so much, I have the newer E85 walbro in my 34 as a lift pump and have run it way down past the pump hieght with no issues

[Piggaz]

Bosch 044 has a working lifespan of 500 hours on E85. Just something to consider.

[The Mafia]

Bosch 044 has a working lifespan of 500 hours on E85. Just something to consider.

I will be staying right the f**k away from that pump then

[gtr jet]

I've been running the Walbro on E85 for 3 years now with no drama's.

[scotty nm35]

I run twin Walbro 255's, less current draw than the e85 pump and more flow. Still I had to upgrade the tank lid for the extra current draw and flow requirements. I ran twin feed lines, one to each rail on the VQ.

For 400+kw intank, single pump, the e85 Walbro is probably your best option, but you may have to re-pin the plug at a minimum. I have had issues with the DW pumps on ethanol, and will never use one again.

[The Mafia]

I run twin Walbro 255's, less current draw than the e85 pump and more flow. Still I had to upgrade the tank lid for the extra current draw and flow requirements. I ran twin feed lines, one to each rail on the VQ.

For 400+kw intank, single pump, the e85 Walbro is probably your best option, but you may have to re-pin the plug at a minimum. I have had issues with the DW pumps on ethanol, and will never use one again.

Hey mate

Can you go into more detail about the issues you had with the DW pumps? Was it an isolated issue or common?

[scotty nm35]

I had a couple fail on e85 builds, and the warranty process is farked. Now I just stick to e85 Walbro's as they are cheap ($185) and they work flawlessly. (Unless you try and run water through them )

The e85 Walbro uses turbine tech, not gear pump. They are silent.

[White GTS-T]

Some good reading;

http://radiumauto.com/media/techarticle-page.php?Radium-s-Ultimate-Fuel-Pump-Test-87

DeatschWerks' new external in-line pump.

http://www.motoiq.com/MagazineArticles/ID/3580/DeatschWerks-DW350iL-Think-Outside-The-Tank.aspx

[scotty nm35]

I like that Radium review, Thanks Tim.

I can't see a Walbro 255 being noisier than a Bosch pump though, perhaps the 044's get noisier over time? It wouldn't help that most are externally mounted I guess.

[The Mafia]

That is a really good review. I'll probably buy the Walbro 400lph pump after reading that.

Edited August 14, 2014 by The Mafia

[reaper]

The early E85 walbros had an issues if not submerged fully, the later not so much, I have the newer E85 walbro in my 34 as a lift pump and have run it way down past the pump hieght with no issues

What sort of issues do they have? I've got one mounted in the standard position in tank (r34 gtr). Should I be trying to mount it further down the mount like in a 34 gtt?

[XKLABA]

What sort of issues do they have? I've got one mounted in the standard position in tank (r34 gtr). Should I be trying to mount it further down the mount like in a 34 gtt?

Do you have problems with fuel surge under 1/4 tank ?

If not you must have a " newer " one, if so you will need to lower it or swap it out

[iruvyouskyrine]

Do Walbro offer anything equivalent to the 400lp/h pump but in an external flavour?

[The Mafia]

Personally, I wouldn't waste my time with a walbro externally. There are better options.

Aftermarket industries makes beautiful surge tanks, and they also sell the Holley Dominator 1400 and 1800 external billet pumps.

Worth every cent.

http://www.aftermarketindustries.com.au/fuel-pumps--accessories-c3/holley-dominator-1400-p180/

http://www.aftermarketindustries.com.au/fuel-pumps--accessories-c3/holley-dominator-1800-p92/

[iruvyouskyrine]

Okay, assuming I don't want to make 1000hp and have a mild setup and already have a surge tank and am just looking for an external pump. What else is out there besides Bosch (have had great experiences with Walbro so would like to stick with them of possible)

[XKLABA]

The one in Tims link looks good

Do not get a Weldon ,lol my Weldon is an awesome piece of gear, great flow for low amps and will pretty much pump anything but should come with ear plugs

And ear muffs

[Piggaz]

Just put it in an acoustic rated box, on a box trailer and tow it.

[James_03]

The genuine bosch 044's will do e85 no worries, there's people that have been running them for years on E.

[r33_racer]

XKLABA - I hear ya about the Weldon pump bro. They are awesome, other then the noise! For a race car they are perfect, but road car not so much...