Bigger Injectors

[b.]

Does anyone know if the injectors off an S15 (480cc?) fit the RB25DET? And if so could they support 250rwkw?

[meggala]

yes they will fit and they should support 250rwkw they can support roughly 500 fly wheel hp

cheers

meggala

[Trust33]

Are these a straight swap?

[EnricoPalazzo]

Im currently workin on organising a group buy of straigh fit side feed high impedence for Rb25det, so as soon as i get some prices ill post it up, but should be cheapish.

[Trust33]

i will keep a look out for further updates i am interested in them it sounds like a worthwhile alternative to getting 550cc injectors.I am not after more than 250rwkw and im guessing with an increase in rail pressure they can be pushed closer to 500cc.

Are they a straight swap injector?

[bigcarl]

count me in

[meggala]

thats what I said remember though you will need and aftermarket ecu to tune them

[T0nyGTSt]

I seem to remember something about a 'square peg for a round hole' if you get my meaning.

Also the people here with R34 Neos will tell you tell you that they are straight fits for their particular rail/loom BUT not for a R33.

Ah it's complicated.

T.

[mokompri]

coming from the sr community, i can tell you there are a quite few people pushing there s15 turbos and injectors to around 200-210rwkw with some extra fuel rail pressure

and there pretty maxed out at around 190rwkw with stock fuel rail pressure..

so if you have 6 of then i would imagine something like 200/4 x6= 300rwkw would be possible with extra fuel rail pressure

there is someone on silviansw.com selling a set of 4 for $300 for anyone interested too

[mokompri]

btw they are a physical straight swap in afaik with the rb25 and sr20 injectors, both high impedance side feed, the only thing im not sure about is the plugs but i would imagine these are straight swap too

[relicr31act]

I am currently converting my rb30 to turbo power and ive read that the vl injectors run out of steam pretty early in the piece. I have also heard that R33 GTR 444cc injectors may well fit straight in. If anybody knows it would be a big help. May as well buy the GTR injectors instead of the Holden variety if they fit.

[EnricoPalazzo]

ive read that the rb25 and sr20 injectors are the same. Can anyone clarify on this.

[RBVS]

yep they are the same , when i ordered my sard injectors the part numbers are the same. from factory i think there just different cc .

[Sydneykid]

Simple numbers guys, 480 cc's in a 6 cylinder engine = ~480 bhp.

So 480 bhp / 1.34 = 358 kw

Less say ~65 kw for drivetrain losses = 293 rwkw.

That's at standard fuel pressure, whatever that is for an S15. Knowing Nissan, probably ~38 psi above boost.

Hope that helps

[KamikazeR33]

im running close to 250rwkws on std fuel pump and regulator and injectors

only running 10psi atm tho

[ed]

I am currently converting my rb30 to turbo power and ive read that the vl injectors run out of steam pretty early in the piece.  I have also heard that R33 GTR 444cc injectors may well fit straight in.  If anybody knows it would be a big help.  May as well buy the GTR injectors instead of the Holden variety if they fit.

GTR's are top feed low impendence.

You'd need the resistor pack also and probably a custom/GTR fuel rail (?)

[Anquetil]

Im currently workin on organising a group buy of straigh fit side feed high impedence for Rb25det, so as soon as i get some prices ill post it up, but should be cheapish.

Sounds promising, so much heresay when it comes to injectors.

[MonstaS4]

I am currently converting my rb30 to turbo power and ive read that the vl injectors run out of steam pretty early in the piece.  I have also heard that R33 GTR 444cc injectors may well fit straight in.  If anybody knows it would be a big help.  May as well buy the GTR injectors instead of the Holden variety if they fit.

Check out http://www.calaisturbo.com.au/index.php

[relicr31act]

thanks for that got what i needed.

[PTR33]

I believe that late ( '96 and later) model 300zx VG30 uses injectors that will fit a RB25.

no responcability accepted for accuracy of information in the previous sentance so don't come running to me when your pistons are a melted pool of slag in your sump... :-)