Fuel Pump And Gtr Injector Q

[mr_rbman]

well i'm about to install some gtr injectors into my RB30 twin cam with a resistor pack and i'm just looking for a few people that have done this that could give me a few pointers like things to get and what to do to make life easier, i've already had a few pointers from Joel but would like some more opinions.

Also i'm going to get the 32 tuned once the injectors and afm is in hopefully by next weekend, the mods are as follws:

VG30 turbo

GTR fuel pump

GTR injectors

Z32 AFM

Power fc

All the other usual mods

Basically what i want to know is will the fuel pump be good enough to take me into the VG30's full efficiency or am i better off upgrading the fuel pump now?

[paulr33]

The gtr fuel pump should be good for around 300rwkw however if your changing your injectors you should look at the fuel rail and possibly upgrade it with a nismo fuel regulator. are you using the rb20 head? any reason you opted for gtr injectors?

[mr_rbman]

The gtr fuel pump should be good for around 300rwkw however if your changing your injectors you should look at the fuel rail and possibly upgrade it with a nismo fuel regulator. are you using the rb20 head? any reason you opted for gtr injectors?

<{POST_SNAPBACK}>

went for the gtr injectors as i got them for quite a good price already cleaned and flow tested with new o-rings etc, the only down side being that they aren't a straight fit as such!

I'm using the Rb25de head!

[paulr33]

There should be plently of direct fit injectors to suit the rb25 head saves stuffing around with injectors modules and so forth. S15 manual injectors are a direct fit and are rated at 480cc

[mr_rbman]

There should be plently of direct fit injectors to suit the rb25 head saves stuffing around with injectors modules and so forth. S15 manual injectors are a direct fit and are rated at 480cc

<{POST_SNAPBACK}>

its the de non turbo head. takes top feed like the rb20 and rb26!

not side feed injectors!

Its not that hard to put the resistor pack in, was just looking for tips/pointers!

Edited January 29, 2006 by mr_rbman

[Cubes]

Grab a set of injector plugs to suit a VL/R31 from motor traders.. ~$51 for 6 plugs. They come in packs of 2.

Well worth the hassle of trying to trim up the gtr injectors to make them fit the rb20 plugs. The gtr injectors have lugs in different spots. + chances are your injector plug boots are split.

Jaycar:

Grab some decent wire and lots of it as you need to run 7 lengths from the loom just under the t/b right up to where you want to mount the resistor pack.

a flux pen

solder

soldering iron

Cheap multimeter for checking checking checking.

Motor mates:

8pin Navara plug to suit the R30 resistor pack ~$2.90

3pin Navara plug to join the front 3 injector loom to the rear 3 injector loom. It will make sense when you pull it out.

Dialetic grease - Prevent corrosion on the navara plugs.

Crimping tool

Lots of good quality insulation tape. Around 3 big rolls.

Its relatively easy to do but will take the whole day as you have to remove the cross over pipe and throttle body.

Be sure to grab some gasket paper or a gasket from nissan for the throttle body. Mine broke.

To be honest.. Its a real pain in the back leaning over fiddling for so long.

Dial in 58.5% inj. correction and it will start and idle perfectly. You may have to adj. idle slightly via the screw and then init the pfc so that it can relearn. Always set idle via the screw to as close but never over the value within the pfc. Doing so I get a 100% stable idle with no hunting or stalling.

Mine runs pig rich on boost so its really only worth it limping around.

EDIT: As the R30 resistor pack has slightly more resistance from my calcs dialing in +0.04ms lag correction will set it perfectly as if it were running the gtr resistor pack.

I've fiddled with it, the adjustment slightly makes it run ever so slightly richer. idles, starts does every thing the same so I really wouldn't worry about fiddling with inj. lag correction.

Fuel pump will be fine providing it was new when you slapped it in.. If it was s/h then chances are its 10 odd years old and most probably getting a little lazy.. So keep your eye on it.

Old fuel pumps make me nervous.

[pnblight]

if its a r33 or r34 gtr pump there good for 400rwkw if the supply cable is done properly but the injectors will run out at 300rwkw.

[Cubes]

Good to hear.