GTR Fuel Pump into GTSt - Should it be so loud ??

[Mr Rb20]

Just put a R33 GTR V-Spec Fuel Pump into my R33 Gtst and it is loud.

At idle it is quiet but when you rev the car, you can hear it.

Is this right or have i been sold a dud ??

[akeenan]

loud fuel pumps are cool.

sounds normal if u ask me when you rev the car the car needs more fuel, the pump needs to pump more hence the noise.

[Kinks]

they are loud, because they are more powerful. as long as it's a loud crisp noise i'd say it's OK.

[BHDave]

GTR pumps are noisier than GTS-t pumps.

Most of the import nissans have a switching current thing happening so the pump runs slower at idle and makes less noise.

Silvias and 180s definately have it. I'd be pretty sure the GTS-t has it too if your pump gets noisier off idle.

Only way to be certain it's ok is to have it checked out by a pro if your really worried

[Mr Rb20]

Well, the standard GTSt unit i couldn't even hear.

This one whines as you rev it harder.

Are there any signs to look out for that may point to the pump being stuffed ??

[akeenan]

it wont pump any petrol and you wont go anywhere? what does the sound .. sound like a psshhhhhh ?

[Mr Rb20]

Yeah, like a psshhhhhh i guess.

A bit like a whine too.

Sort of even like a turbo spooling up.

Has anyone on here done this conversion ??

I'm sure someone must be using a GTR pump.

[TTT]

Dan. Yes it is normal.

All gtr fuel pumps are like that..

The one I just got put in is the same.

at idle is is a slight hiss and as soon as you touch the accelerator, it goes in to a high psssss sound, then back to low when it gets back to idle..

it's fine.. don't worry about it..

[Mr Rb20]

Thanks Tolga.

Thats exactly what it is doing.

I can relax now.

[benm]

I put a Bosch 040 pump in my GTS-T about a month ago and you can hear it at idle sometimes but when you get going I can't hear it at all (engine noise and other noises take over it).

Was the pump mounted intank ?

[TTT]

yep..

[Mr Rb20]

yep, direct fit into where the standard pump was.

[TTT]

Dan did you ever find out what the R33 gtst fuel pump flows?

the RB20's are 135L/hour

the rb26's are 190L/hour..

the bosch ones go from like 200 - 250 L/hour or something like that..

But I don't know what the RB25's are..

[Jay95R33]

That's strange.

I can't hear the fuel pump in my mates R32 GTR (they are the same pumps as the R33 GTR's)..

Maybe they have different (rubber) mounts to stop the noise?

J

[Mr Rb20]

Jay95R33 - I have a mate that has a R33 GTR and you can't hear the pump in his car either. That's why i was getting worried. Maybe they have insulation to stop you from hearing them.

But, after making some phone calls, getting the pump checked and judging by the comments on here, the pump is 100% fine.

GTST - It is a R33 V-Spec pump so i'm not sure of what it flows, i just know it performs much better then a standard one !!!

[TTT]

no no.. I know the GTR pump (V spec or not) is 190L/hour..

I just wanted to know what the R33 GTST ones are...

[benm]

*GTST pump is 135 litres per hour and supports 300 bhp at standard pressure

*GTR pump is 190 litres per hour and supports 420 bhp at standard pressure

*Bosch 910 pump is 200 litres per hour and supports 450 bhp at 73.5 PSI # 0 580 254 910

*Bosch 975 pump is 228 litres per hour and supports 500 bhp at 73.5 PSI # 0 580 254 975

*Bosch 984 pump is 228 litres per hour and supports 500 bhp at 73.5 PSI # 0 580 254 984

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

*Bosch 040 pump is 235 litres per hour and supports 520 bhp at 73.5 PSI # 0 580 254 040

As found from here

I'm using the Bosch 040 which cost $340 supplied and fitted.

[TTT]

so the RB20 and RB25 fuel pumps are both 135Lhour?

surely not..

[predator]

they make noise.. they sound cool.. by the time its really making heaps of noise so is your turbo and everything els.

i like it - makes the car sound like a race car

[SLY33]

man i got an 044. when i first got it in i was like WTF is that noise! Noone told me it was gonna sound like that!