Fuel Pump 300+kw

[GDZ-14R]

I have just searched and read up on fuel pump upgrades to suit, but not really discovered if a standard GTR pump (R34 to be exact) will suit 300-330awkw??

The only two options it seems is the expensive Nismo replacement, or the 044 that requires modification of the cradle and various fittings. Would like to know if the standard item is up to the task to avoid uneccessary mods. Anyone done it??

[R31Nismoid]

It can be done.

However you have to ask yourself the question of why not replace it?

It's 10 years old (or there abouts), $200-$350 to replace it. Cheapest part and one of the most important.

[GDZ-14R]

Yeah that is the right approach for sure, but the Nismo item is $500+, and the bosch is cheap but requires some hacking, CAN be noisey, surge, etc.

Just thought if the 34 item is a decent one to hold to it.

[TiTAN]

Later on when the pump starts getting lazy and your engine starts leaning out and melts your rings/pistons the $500 wont seem like it was all that much.

[R31Nismoid]

Yeah that is the right approach for sure, but the Nismo item is $500+, and the bosch is cheap but requires some hacking, CAN be noisey, surge, etc.

Just thought if the 34 item is a decent one to hold to it.

Installation of a bosch pump is hardly rocket science mate

It is a very easy job, 30mins should easily see it done.

Installed correctly there should be little noise and certainly no surging.

[Zardz15]

theres also the walbro pump at around $160-180 which from my understanding requires no modification and flows the same as the 040

[bubba]

044 in tank.

Don't waste your time with the Walbros and I'm just not a fan of the 040's integral pickup.

When you mount the 044 in tank you use a sock filter setup like the stock setup.

[TiTAN]

i actually used the stock R33 GTST sock on my 044. haven't had any issues with it so far

[R31Nismoid]

theres also the walbro pump at around $160-180 which from my understanding requires no modification and flows the same as the 040

No where near the same mate.

A pump over HALF the size of another logically could not do that.

Numbers below (thread on this just last week)

Bosch pumps are not noisy at all when installed correctly, and the performance between the two is not the same. You only really need to put them side by side to see why, but here are some facts all the same:

Below figures are with 13.5v pump supply.

Bosch 044 pump is 330 litres per hour and supports 730 bhp at 73.5 PSI (0 580 254 044)

Walbro 255 "high pressure" is 56 gallons/211 litres per hour at 70 PSI (GSS340)

Speaks for itself. An 044 intank fitting I find is just as easy as the walbro, I have done both.

[bubba]

Oh and on the subject of noisy 044's, mine is only noisy when the fuel level is low and I've been driving for a while (hot fuel seems to make it hum a bit more than normal).

[GDZ-14R]

Ok my arm is twisted, 044 it is. Thanks guys.

I wasn't saying that it will surge or be noisey for sure, i mentioned CAN be in first post based on some feedback others had posted.

BTW, i had a walbro with rewired power source in my old mid 11sec GSR for nearly 5yrs and it never missed a beat. Granted it was noisey as all fark, especially after a long drive!!

[The Mafia]

The Nismo \ Tomie is about $380. It comes on its own bracket, and has its own sock and plug. 285lph at 75psi.

You simply pull the old pump out, and drop the new one on its bracket in. Fits like factory. You can feel the sock press up against the bottom of the tank.

My nismo is completely silent too.

Worth the extra $$$ IMO.

[r33niko]

get a nismo pump much more quiet and easy to instal

ive got 330kw with no problem at all.

[GDZ-14R]

The Nismo \ Tomie is about $380. It comes on its own bracket, and has its own sock and plug. 285lph at 75psi.

You simply pull the old pump out, and drop the new one on its bracket in. Fits like factory. You can feel the sock press up against the bottom of the tank.

My nismo is completely silent too.

Worth the extra $$$ IMO.

Where in the world could you get it for that price??

[SimonR32]

No where near the same mate.

A pump over HALF the size of another logically could not do that.

Numbers below (thread on this just last week)

FACEPALM!!!

He wrote about a 040 compared with a Walbro 255l/hr HP which have similar flow rates, you changed it somehow to comparing it with a 044...

Then you talk about it being half the size and not being able to flow similar because of physical size... NEWS FLASH: A 040 is also the same size of a 044, does this mean that they can only flow similar volumes?!?

Time to delete the internets, it's already filled with enough heros with bad advice

To the OP... there is nothing wrong with a Walbro GSS-342 for your predicted power. They are cheap and will flow enough, are very reliable, easy to install and are a lot less noisey than a Bosch

Edited March 24, 2010 by Cerbera

[R31Nismoid]

^ Nice story that.

The only two options it seems is the expensive Nismo replacement, or the 044 that requires modification of the cradle and various fittings. Would like to know if the standard item is up to the task to avoid uneccessary mods. Anyone done it??

So anyway, what was that about facepalms?

[SimonR32]

theres also the walbro pump at around $160-180 which from my understanding requires no modification and flows the same as the 040

No where near the same mate.

A pump over HALF the size of another logically could not do that.

Numbers below (thread on this just last week)

Are you really that stupid?!?

Edited March 25, 2010 by Cerbera

[joeyjoejoejuniorshabadoo]

The Nismo \ Tomie is about $380. It comes on its own bracket, and has its own sock and plug. 285lph at 75psi.

You simply pull the old pump out, and drop the new one on its bracket in. Fits like factory. You can feel the sock press up against the bottom of the tank.

My nismo is completely silent too.

Worth the extra $$$ IMO.

i have the same pump and sentiments

[Scradly]

So what does the actual size of the pump have to do with it.

Yes the 040 and 044s are twice the size of a walbro but isnt the walbro the same size as a stock pump.

So i guess the walbros flow the same as a stock pump based on that theory.

having said all that the walbro pump will flow your power figure easily.

Yeah they may not flow the same as an 044 but they fit a hell of better into the standard cradle and are barely noticable noise wise.

[TiTAN]

my 044 isnt audible. its all in the mounting.