How Much Hp Is A Std Rb25 Fuel Pump Good For?

[mattysaidso]

Hey,

Just wondering how far a standard r33 rb25 (ser2) fuel pump will go?

Currently running the following setup: 3" exhaust, FMIC, std turbo, std injectors, remapped ecu and 12 psi.

Will it handle this ok?

cheers

matty

[34GeeTeeTee]

Probably yes, but due to the age of the car and the pump i would be looking to invest in an upgrade at some stage just for safety anyway.... They are cheap and easy to do so no reason not too

[R31Nismoid]

240-260rwhp - but as stated they are 15+ years old.

It should be the first thing to change.

[mattysaidso]

hmmmm good point.

Whats the better setup in a r33?

Bosch 040 and remove the sock, mount pump as low as possible

or

Bosch 044 and adapt the standard sock to fit?

i did a 040 years ago and remember not being certain that I had it mounted as low as it could possibly be and from memory i recall seeing a 044 mounted in tank with factory sock....

[34GeeTeeTee]

How much power are you aiming for mate? Drop in Walbro will be much easier for lower power levels....

My 044 is mounted with rubber on the bracket and has a sock, better than the 040 option but depends on how much you actually need?

[mattysaidso]

only after enough to safely power my current setup, have no plans for turbo upgrade etc on this car.

Are the walbro pumps an easier install?

[34GeeTeeTee]

Due to the physical size etc yes.... There is some DIY threads on it I think, do a search

[AngryRB]

ive had 2 walbro's now, the 255Lph handled 260kw so that would be fine.. quite cheap too. I didnt want to take chances with the fitment, tuner fit mine in well under an hour so worth it to get done right first time.

[gtsttrk]

Walbro have a good rep, with the Bosch pumps Ic heard good and bad things. Seems they can go either way depending on batch etc. I recently bought a Nismo and couldn't be happier. I'm letting a GTR pump go. PM if interested, I want it gone!

[mattysaidso]

thanks for the offer but If im going to replace the pump then it will be with a new item.

[gtsttrk]

No worries champ. Anyways as I said I've found the nismo pump an excellent choice!

[34GeeTeeTee]

Walbro have a good rep, with the Bosch pumps Ic heard good and bad things. Seems they can go either way depending on batch etc. I recently bought a Nismo and couldn't be happier. I'm letting a GTR pump go. PM if interested, I want it gone!

What bad things have you heard? Been pretty reliable from my experiance and many many others...............

[KiwiRS4T]

I've had a Walbro in my tank for about 4 years. I have a 044 as well - haven't heard anything bad about them except they're noisy as!!

[gtsttrk]

What bad things have you heard? Been pretty reliable from my experiance and many many others...............

Not saying they're all terrible, but as I said I've heard a few can be dodgey and have ha to be replaced. Read it in a couple of threads here on SAU, but as I've said I'm not commenting on personal experience just what I've read on here.

[mattysaidso]

thanks for the info.

ordered a walbro today.

[34GeeTeeTee]

I've had a Walbro in my tank for about 4 years. I have a 044 as well - haven't heard anything bad about them except they're noisy as!!

Mine is quieter than the 34GTR pump I had.... All about how you mount it etc

[AngryRB]

i liked the noise of the 255 walbro, my new 400l walbro is silent the beast would of sounded more angry with the pump noise , oh well

[Miguelone]

Walbro 255's are awesome value, install is easy too.