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R32 Gtr Fuel Pump V Wallbro

XKLABA

By XKLABA,
in Engines & Forced Induction

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XKLABA Grand Master

XKLABA

Posted
Posted (edited)

I have just fitted wallbro into my GTR on advise from a motorsport shop that does tuning aswell as sell parts, now i'm not sure if it was a good idea as i took car for drive after doing change and is no longer blowing black smoke under boost, any thoughts would be appriciated.

Cheers Michael

Edited by XKLABA
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R31Nismoid Grand Master

R31Nismoid

Posted
Posted

Walbro in a GTR?

oh dear... thats like putting a ebay turbo onto a GTR, nasty...

Did you even test the fuel pressure to confirm the fuel pump was dead?

If it is NOT blowing fuel under boost - it probably means the pump/motor is leaning out... again, another major issue...

XKLABA Grand Master

XKLABA

Posted
  • Author
Posted
Walbro in a GTR?

oh dear... thats like putting a ebay turbo onto a GTR, nasty...

Did you even test the fuel pressure to confirm the fuel pump was dead?

If it is NOT blowing fuel under boost - it probably means the pump/motor is leaning out... again, another major issue...

Are they really that bad, do you have flow rates for gtr fuel pump to compare them and do you have any experience personaly with a walbro pump in a gtr.

Cheers Michael

R31Nismoid Grand Master

R31Nismoid

Posted
Posted
Are they really that bad, do you have flow rates for gtr fuel pump to compare them and do you have any experience personaly with a walbro pump in a gtr.

Cheers Michael

I've used Walbro pumps before, in a "gtr" makes zero difference, it's just a mechanical part.

From what i've seen, they are poor. Ok for setups 260rwkw or less, othewise forget it.

Get a decent pump, that is well known.

For $220 for a Bosch, i mean - why skimp on a super important part that is very cheap?

And the fact you car is no longer blowing a fuel cloud would suggest it's running very lean = BAD.

DVS JEZ Grand Master

DVS JEZ

Posted
Posted

cut your losses, sell the walbro to a mate, get a bosch 044 mounted in the tank and youll be fine, do this before you get a tune, and i wouldnt worry about FPR unless there is something wrong with your current one,

XKLABA Grand Master

XKLABA

Posted
  • Author
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cut your losses, sell the walbro to a mate, get a bosch 044 mounted in the tank and youll be fine, do this before you get a tune, and i wouldnt worry about FPR unless there is something wrong with your current one,

The idea behind these were because at 19psi the stock injectors are maxed so for a bit of safety i am going to turn up base fuel pressure a couple of pound, so i don't have to get new injectors for this engine as it is a bandaid engine while i get the next engine ready which is going to run a different style of injector

R31Nismoid Grand Master

R31Nismoid

Posted
Posted
the old pump was the original pump that is now 17 years and 180000+km old, i took car for another run and is blowing smoke again

Doesn't matter mate... for the sake of the car, get it on a dyno and see what is going on.

Also check the fuel pump voltage... i assume you wired it correctly and used new wiring?

daisu Mentor

daisu

Posted
Posted
The idea behind these were because at 19psi the stock injectors are maxed so for a bit of safety i am going to turn up base fuel pressure a couple of pound, so i don't have to get new injectors for this engine as it is a bandaid engine while i get the next engine ready which is going to run a different style of injector

Why would you bother getting a new fuel pump, a FPR and having it tuned when it's just a bandaid engine?

Turn the boost back til you have safe injector duty, keep the standard FPR on, spent the saved money on your new engine?

Brezza Proficient

Brezza

Posted
Posted

why do people bag Walbro pumps?

i put one in my car when i had the injectors upgraded, the GTR was obviously tunned because the injectors were upgraded.

i was advised by my mechanic who is quite reputable here in Adelaide that there really isnt any difference in the pumps, appart from the Bosch one being louder.

XKLABA Grand Master

XKLABA

Posted
  • Author
Posted
Why would you bother getting a new fuel pump, a FPR and having it tuned when it's just a bandaid engine?

Turn the boost back til you have safe injector duty, keep the standard FPR on, spent the saved money on your new engine?

I am trying to bet my 11.36 on stock turbos while leaving engine as stock as possible to see what i can get out of it.

XKLABA Grand Master

XKLABA

Posted
  • Author
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how hard is it to install a bosch 044 in tank fuel pump in an r32 gtr? compares to a walboro ?

i was told they were similar price and performace but the bosch is very noicey, not good when police pull you over and there is a loud buzzing coming from the back of the car.

XKLABA Grand Master

XKLABA

Posted
  • Author
Posted
why do people bag Walbro pumps?

i put one in my car when i had the injectors upgraded, the GTR was obviously tunned because the injectors were upgraded.

i was advised by my mechanic who is quite reputable here in Adelaide that there really isnt any difference in the pumps, appart from the Bosch one being louder.

thank you you made me feel a bit better about putting it in

XKLABA Grand Master

XKLABA

Posted
  • Author
Posted
Doesn't matter mate... for the sake of the car, get it on a dyno and see what is going on.

Also check the fuel pump voltage... i assume you wired it correctly and used new wiring?

yes and no i put in a relay with 15gauge wire and fuse but used old wire as trigger, only problem with this set up is the pump runs at 100% all the time, not sure how else to do it.

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