Gtr Fuel Pump Upgrade

[GTR32]

I’m upgrading the fuel pump in my R32 GTR and would like some feedback please on possible options (I’ve already searched and read SAU extensively and don’t think the popular Bosch 044 pump option is for me). I need something that:

is quiet

will support around 280 4wkw

is dedicated/designed as an in tank pump

uses the existing wiring safely ie doesn’t require extra electrical circuits

will drop-in without fitting other than straight r&r

Options so far appear to be:

1. R33 GTR. A source has indicated that the R33 GTR pump outflows the R32 GTR pump. This would be ideal if it’s true (I’m sceptical) and it’s a drop in fit. Can anyone shed light on this and if it is true, what is the GTR pump flow rate?

2. Nismo. Drop in fit, pricey but good.

3. Apexi. Drop in fit, discontinued but good.

4. Sard. Drop in fit, popular.

Would appreciate feedback from anyone who has first hand experience.

Thanks

[NRB]

I think you'll find when you upgrade pumps that you'll need to upgrade your wiring to the pump. Larger pumps draw more current and stock GTR wiring is often not up to the task.

I recently had a Bosch 927 (correct me if I'm wrong Dean) fitted and needed to have new wiring installed. Wasn't a big deal and cost an extra $150. We tried an 044, but it didn't fit, so we went for his baby brother. I'm running ~320rwkw, so I think it matches your needs.

[GTR32]

Hi NRB;

I'm convinced this is a good idea. Could I please ask how (assuming your car is an R32?) you routed the live feed, particularly the point from which the feed was taken ie battery or another point?

Thanks

[sidewaymambo]

Have you consider Tomei 276L/H fuel pump direct fit?

http://www.greenline.jp/catalogue/bcpartli...=R32C&intake=FI

[400kwgtr]

The standard one should be able to support 280 rwkw. The injectors wont, but the pump should.

[NRB]

Hi NRB;

I'm convinced this is a good idea.  Could I please ask how (assuming your car is an R32?) you routed the live feed, particularly the point from which the feed was taken ie battery or another point?

Thanks

Your assumption is correct. The feed was taken from the battery, and has an inline fuse. The wire (quite a thick one, dunno the gauge) runs direct to the fuel pump. I didn't install it myself, it was done by the auto electrician over the road from RacePace in Bayswater.

Nick

[GTR32]

Nick;

Thanks for the response and the location of the installer, it's good info.

Mark

[NRB]

No problem Mark. Let us all know how you get on.

I just realised you're in Canberra - no point coming all the way to Victoria to get a wire installed

[GTR32]

Sidewaymambo;

Thanks for the lead (no pun intended). It's not the physical fit that is the problem as there are a number of pumps that are 'drop in'. The issue is the ability of the standard wiring to cope with increased current loads generated by a pump that will support 300kw at the wheels.

I'm not sure what max current the standard pump draws, but it's probably a reasonable bet that any upgrade will have an increased load. The Bosch 975 draws about 10.5 amps (probably about the same as most of the aftermarket 'drop in' pumps)whereas the 044 draws about 15, which is a significant increase. The thicker wiring is just insurance for any level of upgrade.

Mark

[TTT]

just for a few other options..

Z32 300ZX TT fuel pump = 255L/h - probably pick one up for about $200 used.

Walbro fuel pump =255L/h - cost is $180 NEW from www.mercurymotorsport.com.au