When Is The Time To Change Fuel Pump And Injectors?

[335]

Hello

I have a R32 GTS-T with these mods; twin front pipe, catback exhaust, fmic, pod and soon will put on a RB25 turbo. Looking at computers now. But until I buy a ecu and tune the car, with these mods when is the time to upgrade to a bigger fuel pump and injectors?

[R31Nismoid]

first thing you should do is change the fuel pump

[DVS JEZ]

Once u go over around 200kw u will need bigger injectors and air flow meter.

Fuel pump should be replaced and rewired now due to age

[DVS JEZ]

And dont use a 2nd hand pump of any sort

[335]

And dont use a 2nd hand pump of any sort

My friend was going to give me a gtr pump, dont use this?

[R31Nismoid]

No.

[335]

No.

Ok, thank you.

Just so I will know, what is the reason why you suggest not using the GTR pump?

[R31Nismoid]

And dont use a 2nd hand pump of any sort

[ARTZ]

And dont use a 2nd hand pump of any sort

Why not, I got a s/h tomei and its brilliant

[Manuel Kasko]

My guess is the second hand pump is exactly that 2nd hand.

For the price of a new pump these days $160-$200 direct replacement why going 2nd hand?

Also its the life source of the car without fuel you will lean out and do more damage then $200 for a pump

[DVS JEZ]

Why not, I got a s/h tomei and its brilliant

Thats different in a way. Its more than likely not that old.

But still i would definately prefer not to use 2nd hand fuel pumps.

I knew op was going to say a 2nd hand GTR pump.

With most things that run in fuel, once they are removed they dry up, seals swell etc etc.

[AngryRB]

since you guys are talking fuel pumps, whats the limit of power for walbro 255L/h and 555nismo's on pump98?

[HYBR3D]

since you guys are talking fuel pumps, whats the limit of power for walbro 255L/h and 555nismo's on pump98?

Pretty sure thay nicked named them Walbro 500, as in 500HP.

Basically they are generally good to 300+ wkw in most applications. Ive seen so many cars putting that power figure out, and more with only a single in tank pump.

Cant comment on Nismos one.

I brought a genuine walbro for 130 they come around cheap sometimes keep an eye out. Dont buy second hand, its not worth it when your chasing power increases.

Heres a mean set-up my mates put in is R32.4, 1200HP SX pump to keep his 420wkw gtr fed

Edited March 19, 2012 by HYBR3D

[R31Nismoid]

Nismo will do 400rwkw

Walbro - anyone's guess. They are very hit and miss. Mine nosed over @ 270rwkw, others have run into issues at less, some have made more. Gamble you take really. Walbro's from their own information - don't like higher pressures like a Bosch/Nismo etc perform ok.

[DVS JEZ]

Ive just ordered a new walbro 400lp/hr for my GTR. ill let u know how it goes

[Torques]

In engineering is a term called B.S.F.C

(Brake Specific Fuel Consumption)

You could use this caculator to give you an idea about fuel requirements for injectors and pump.

http://www.rceng.com/technical.aspx

[Don Dada]

Ive just ordered a new walbro 400lp/hr for my GTR. ill let u know how it goes

Yea...I asked about this but no feed back so i'm waiting

[Guilt-Toy]

Put all walbro's in the bin.

that is all.

[Hadouken]

Ive just ordered a new walbro 400lp/hr for my GTR. ill let u know how it goes

I've got this one

Quiter than my gtr pump

[Torques]

I can recommend this one:

http://www.nengun.com/tomei/fuel-pump-nissan-skyline-r33-gts-t

Drop in replacement, not noisy, quality item!