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Fuel Pump 300+kw

GDZ-14R

By GDZ-14R,
in Engines & Forced Induction

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GDZ-14R Rising Star

GDZ-14R

Posted
Posted

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??

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R31Nismoid Grand Master

R31Nismoid

Posted
Posted
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 :ermm:

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

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

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R31Nismoid Grand Master

R31Nismoid

Posted
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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.

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GDZ-14R Rising Star

GDZ-14R

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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!!

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The Mafia Grand Master

The Mafia

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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.

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GDZ-14R Rising Star

GDZ-14R

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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??

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SimonR32 Grand Master

SimonR32

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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 by Cerbera
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R31Nismoid Grand Master

R31Nismoid

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^ 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?

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SimonR32 Grand Master

SimonR32

Posted
Posted (edited)
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 by Cerbera
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joeyjoejoejuniorshabadoo Grand Master

joeyjoejoejuniorshabadoo

Posted
Posted
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

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Scradly Community Regular

Scradly

Posted
Posted

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.

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