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GTR injectors into RB20 - Question

Chris32

By Chris32,
in Engines & Forced Induction

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Roy Grand Master

Roy

Posted
Posted
So what ill need to do would be to change the Gtst resistor pack to the GTR one? or is dont gtst have a resistor pack as such?

thanks Roy much apreciatted!

Get your hands on an RB20DET wiring diagram, you will find that the wiring diagram for the R32 RB20DET and RB26DETT are on the same diagram (well they are on mine) which helps spot the differences.

The RB20DET does not have a resistor pack, the GTR does. Essentially you need to cut into the power wire that feeds all the injetors, off the firewall it runs on top of the fuel rail branching off where there are injectors. So before it branches off to feed a voltage to any injectors you need to cut it and solder it to the 7th wire on the resistor pack. Then from the resistor pack you have 6 wires that then run to the +ve spade on the injectors. So essentailly you are wiring the resistor pack in series before the injectors, just as std on a GTR.

I should have taken photos... :Oops:

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Sydneykid Grand Master

Sydneykid

Posted
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Hi jnr32r, Power FC requires the standard impedance injectors, which on an R32 GTST RB20DET are 12-14 ohms (generally called high impedance). R32 GTR RB26DETT have low impedance injectors, around 3-5 ohms. If you use low impedance injectors then the PFC will get too much current drain and overheat.

Hope that helps

93RPS13 Enthusiast

93RPS13

Posted
Posted
I am using 13B non turbo injectors which are either 420cc or 460cc Lol damn memory! Anyway I got them from a fella from nissansilvia.com for $35 each. They fit straight in, the last 4 digits are 1350 from memory??? Anyway I also, during the conversion got new injector plugs, which are similar to the stock ones except the lug is in the centre and not offset. They also have the spring you push down to unplug them vs the spring clip that gets flicked off and lost. I am running a microtech LTX12 (a 180sx RB20DET) and haven't got the car back yet so I cannot comment on the further.

do you happen to have pics of the mod'd clip to fit the 13b injectors? Thanks

Roy Grand Master

Roy

Posted
Posted

Im not using a Power Fc but am using the GTR injectors & resistor pack on RB20 ECU.

So std RB20 ECU requires high impedence injectors to limit the current to the ecu...so can use:

- high impedence injectors and standard ECU OR

- low impedence with resistor pack, and std ECU. As impedence of (low impedence injector + resistor pack) equated to using high impedence injectors, the ECU doesnt know any better.

jnr32r Proficient

jnr32r

Posted
Posted
Hi jnr32r, Power FC requires the standard impedance injectors, which on an R32 GTST RB20DET are 12-14 ohms (generally called high impedance).  R32 GTR RB26DETT have low impedance injectors, around 3-5 ohms.  If you use low impedance injectors then the PFC will get too much current drain and overheat.

Hope that helps

Will that still happen even if you have a resistor pack, from RB26?

Chris32 Veteran

Chris32

Posted
  • Author
Posted

well, injectors are on way :D

Once I have got hold of the management side of things, they will be going in and then I guess we'll see how they work

Chris

  • 6 months later...
R31 POWER Mentor

R31 POWER

Posted
Posted
Hi jnr32r, Power FC requires the standard impedance injectors, which on an R32 GTST RB20DET are 12-14 ohms (generally called high impedance).  R32 GTR RB26DETT have low impedance injectors, around 3-5 ohms.  If you use low impedance injectors then the PFC will get too much current drain and overheat.

Hope that helps

I hope this is'nt true because I have a PFC and GTR injectors/resisters are going in this weekend

GTRgeoff Grand Master

GTRgeoff

Posted
Posted

Thanks Champ. Don't kill yourself getting the work finished this weekend. I'm currently looking around for some injectors so i can be safe running higher boost => more power on the straights at PI and Sandown :P

R31 POWER Mentor

R31 POWER

Posted
Posted

I have'nt put them in yet coz I was finding out if they would work with the PFC.After reading SK post it put me off trying it coz I did'nt want to do damage to the ECU.

Roy you'll be the first to know how it goes after I finish that beer.

Chris32 I'll take pics as I go.Hopefully this weekend I'll do it all.

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