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Well that sucked dogs balls !! And I'm not talking about a cute little puppy either, I'm talking about a big fat hairy dogs balls !!

The new pump is in. Took me about 2 1/2 hours but it's in. It would have been so much easier if I had a GTR pump cause the Walbro that I used is much smaller in size.

Basically the pump is clamped into a plastic frame, and that plastic frame is slotted and clipped into another plastic mount that is inside the fuel tank. But if your using a smaller pump the pump just slops around in the frame and the frame won't stay together for you to mount it back in the car... Very frustrating....

Plus, the way that the frame slides and clips into position makes it hard to figure out where to position the cable ties to hold it there :P

But, after all that it's in and working well.

I ended up not using the top half of the plastic frame cause I just couldn't get the damn thing to sit in place for me to clip it back into the mount. It doesn't effect anything, and the little plastic surge tank thing (where the fuel pick up is) is still in place and working fine.

I thought it would be loud cause there isn't any rubber sleave around it, and one part of the pump is hard up against the hard plastic frame, but I can't hear it all all once it's primed up and running.

The sock sits at the same height/position to the factory setup so that's good. The one thing I forgot to put back in was the plastic clamp that holds the fuel pump power wires and the two hoses together :( And it looks like the fuel level sender is catching a little on the hoses or wires cause I filled it right up after I did the swap and the needle stopped at about 7/8 full.. :( Sooo next weekend I'll take the cap off and clamp the hoses and wires toghether.

If anyone is doing a swap I'll be able to give some pointers to help out, but I'm not sure if I want to do another one !!

J

hey guys i was wondering whether i could run a gtr pump for the intank one and then setup a bosch motorsport 044 external pump (i got it from old VL setup)????

is the r32 and r33 gtr fuel pumps the same????

what sort of power will the gtr pumps run out of flow ? (setup with the 044 one)

any tips on setting it up?

any info appreciated

:P

Brad

G'day Brad,

Apparently the GTR pumps are a much easier fit, just need a very slight trimming of the plastic and it slots straight in.

I think the GTR pump will handle about 240rwkw, maybe a touch less with the AWD setup of the Stagea. With using a 044 in a external setup you should for heaps more.

J

All Nismo RB26DETT pumps are rated at 4.6L/min at 3 Bar. I believe that this is 125% of the OEM output (ie the original pumps are rated at 3.68L/min at the same pressure). Bearing in mind that I can't read Japanese....

Part numbers for the Nismo pumps are as follows:

BNR32 17042-RR581

BNCR33 17042-RR596

BNR34 17042-RRR46

WC34 17042-RR581

FYI the Nismo pumps for the RB25DET (inc. NEO) are rated at 4.1L/min at 3 bar (175% of OEM).

Just in case the Stagea guys missed it, here is a post that I made elsewhere a couple of days ago on fuel pumps........

You need to be careful when selecting Walbro pumps. As you can see from the attached, the GSS341 is rated at 255 lph, that's at zero boost and at 13.5 volts. If you install one in tank with the standard Skyline wiring it will run at 12 volts, that's 215 lph. Then add some boost, say 20 psi (1.35 bar) and they are down to 180 lph.

flowtest-walbro.gif

Bosh pumps on the other hand are rated at 73.5 psi, that's a rail pressure of say 40 psi plus 33.5 psi (2.3 bar) boost. That is why, generally speaking, Bosch pumps are physically larger, they need to be to provide the pumping torque at their high rated pressures. If you are looking at running high'ish boost or upping the rail pressure, then this feature is more likely to appeal.

boschpump.jpg

The same guys that tested the Walbro pumps also tested a number of Nissan pumps. If you take a look at the following graph you can see that a standard R33 GTR fuel pump out flows the Walbro GSS341 at 13.5 volts and 30 psi by about 10%. The standard Z32 fuel pump is 5% better than the GSS341 (the standard R32 GTR fuel pump is basically the same as the Z32).

flowtest-nissan.gif

Hope that is of some use.:(

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