Gtr Injectors In Rb25det

[nos man]

well i have decided that i want gtr injectors in my rb25! because my injectors is side fed and gtr is top fed, i just wanna know how i can go by putting them in!

would i have to modify my rail and how would i have to do it?

if there's anyone who has done it or have ideas on how to i would greatly appreciate it! or if anyone has a set of 6 s15 injectors i would gladly buy them off you!

cheers

[Evil34]

What is your reasoning for wanting GTR injectors?

[nos man]

mainly a budget thing but i've just had a chat to someone and it turns out it might not be such a good idea! so i might lean more towards getting 550cc injector!

[=premo=]

You would need to rewire to fit in the resistor pack as GTR injectors work on a lower impedance like CA18's. It would be alot easier to get aftermarket injectors

[Simon-S14]

gtr injectors can be made to fit however thats a lot of custom stuffing around, you'd be better off getting some S15 injectors

Edited February 19, 2008 by Simon-R32

[Madaz]

slidewize imports get some from japan

http://www.slidewizeimports.com/

since we cant get stuff from yahoo direct slidewize bids for us gets shipped to his Japan address and then on to us

>>Yahoo Injector Page<<

[Krishy]

you can get something like 770cc injectors for a RB25DET from most of the performance workshops in Melbourne and Sydney

[Madaz]

770 is a bit of overkill i think you only roughly need 450cc for 300kw

[Madaz]

just calculated 400HP which is roughly 300Kw

so if you got 550cc you've got a little headroom for more power

Power: 400 horespower

Number of injectors: 6

BSFC: 0.65

Duty cycle: 0.85

This combination will require 535 cc/min injector (51.0 lbs/hour)

[nos man]

cheers guys! but i've decided to go for 200kw atw first so sticking to standard injectors would do the job! but in a few months time i will be getting my engine rebuilt! forgies, cams and maybe bore it to the max (2.6 litre) and a different turbo! but it's decided to go for 200 first =)

[Krishy]

770 is a bit of overkill i think you only roughly need 450cc for 300kw

i am always thinking of room for expansion lol.....nothing wrong with 770cc injectors....

engine rebuilt and your only boring out a RB25 to a 2.6....correct me if i am wrong but i thought with RB25's you could bore it out to a bigger capacity to more like 2.8 or something....if i am correct why not do the 2.8 instead of the 2.6

[nos man]

2.8? is that so? interesting

[Krishy]

yeah ^^ coz i think my mate had his RB20 bored out to something like a 2.3 or a 2.4l.....and i have also heard of RB26's being bored to 2.9-3.0l....so there is no reason in my mind as to why a RB25 cannot go to 2.8 or so...but i guess nos_man you will have to do a bit more research on that....ask you mechanics and see what they say or recommend....

[shy_s6]

2.7 is the most common set up for the 25 i believe running gtr crank n rods to do this...

anyone know if 25 injectors will fit in the 26 rail?

[D_Stirls]

2.7 is the most common set up for the 25 i believe running gtr crank n rods to do this...

anyone know if 25 injectors will fit in the 26 rail?

The 25 uses high impedance side feed injector where as the 26 uses low impedance top feeds. i know where you can get a top feed fuel rail made up for a 25 though.

Edited February 20, 2008 by D_stirls

[shy_s6]

The 25 uses high impedance side feed injector where as the 26 uses low impedance top feeds. i know where you can get a top feed fuel rail made up for a 25 though.

yer kool its just im looking at running a 26 plenum and throttle set up on a 25, so wasnt going to change to 26 inj because of the impedance

[nos man]

you can always use resistors! but i reckon it's not worth it! better off getting something like rx7(13b's are 550cc), s15 injectors if you're on a budget like i am! but i thought i would give it a shot but nah........

Edited February 21, 2008 by nos man

[Tangles]

I ordered Deatschwerks 450cc injectors, was pretty cheap. Was going to get the 480cc items, cheaper than S15 ones, and they suggested to get their 480's but then said only stock was 550's...... so they gave me 550cc injectors for the 450cc price. pretty decent deal. Plus factor is that Deatschwerks are world renowned for their quality hi-flows.

If you are after some $$$-saving, contact them in the States and see what they can do for you.

[shy_s6]

ok do the stock rb25 injectors fit on the 26 rail? as im looking at running a rb26 plenum and throttle set up and will retain the stock 25 ignitors ect, or what you were saying is i can run some Deatschwerks inj that fit the 26 rail but use the 25 impedance?

[D_Stirls]

lol;

Once again;

The 25 uses high impedance side feed injector where as the 26 uses low impedance top feeds.

So no they won't fit.

If you don't want to stuff around with resistor pack and such use injectors suitable for RB20's because they will be top feed so they will fit the RB26 rail and the will also be high impedance so you won't have to change anything in the wiring.

New Injectors- Perfect Run.com

Have a look at the link above, a set of Sard 650 or 800cc's (both the same price) will cost you ~ $610 delivered.

Edited February 21, 2008 by D_stirls