Cheap injector upgrade

[GTS-t VSPEC]

INASNT,

I have a GREDDY plenum so no probs for me, but yes it is possible to have a top-feed rail with the stock RB25 plenum, it's just a very tight squeeze:D

It doesn't need side-feed, but they are the easiest to fit.

See'ya:burnout:

[adam 32]

ive been told they bolt straight into the RB20's (13B injectors) im pretty sure theyre top feeds, can anyone confirm this?

[Sydneykid]

Hi adam 32, we use lots of RX7 Series V Turbo injectors in R32 GTST's. Fit straight in, right impedance. Good for 600 bhp with the right pump.

Hi tlai909, whenever I add it up, hi flowing standard injectors always works out more expensive. Even if you get the labour for almost nothing it will still cost $100 each for parts, ultrasonic cleaning and flow testing. We buy brand new Rochester injectors up to 1300 cc for not much more.

Japanese brand names are double the price because they have a "brand name" on them not because HKS, Jun, Tomei, Toda, Top Secret etc actually make them. Nippon Denso really make almost all of the "brand name" injectors and they just put their name on them. Take a look at a ND catalogue and you will find almost all the specifications that the "brand names" have at less than half the price. A 700 cc injectors costs almost the same as a 370 cc injector, the "brand names" increasing prices for larger injectors is profiteering.

Hope that helps.

[Guest KILLER-T]

Ok i found a set of rx7 550cc injectors for $75ea is this a good price or can i do better:confused:

[GTS-t VSPEC]

Killer,

Yeah, that's a good price, I get mine a bit cheaper, but that's good for retail. Make sure they have been flowtested, and put the highest flow in number 6 cylinder:D

See'ya:burnout:

[Guest KILLER-T]

i forgot to add they are 2nd hand

[GTS-t VSPEC]

Killer,

Yeah, that's right, they get fully re-conned, they are very commonly used:D

See'ya:burnout:

[adam 32]

cool, all i need now is an ECU and some 13B injectors and job done!

[JimX]

Originally posted by Sydneykid

whenever I add it up, hi flowing standard injectors always works out more expensive.  Even if you get the labour for almost nothing it will still cost $100 each for parts, ultrasonic cleaning and flow testing.  We buy brand new Rochester injectors up to 1300 cc for not much more.

Heya Sydneykid

In my experience you're right about the injector high-flowing, it costs around $200 per injector to do from Croydon. This is with you supplying the injectors too. However the cheapest injectors I remember seeing recently are 550cc SARD ones for about $160 I think. Are you saying you can get even bigger injectors for closer to $100? Where from?

[Guest INASNT]

jimx

where did u see sard 550cc new for $160 each?

jms quoted me $1600 for a set of 6 new 1'c

[JimX]

INASNT, can't remember It just seemed to be something in the back of my head that I vaguely recall from somewhere. Let's just wait to see what Sydneykid can do for us

[Guest KILLER-T]

I picked my injectors up today and ended up getting them a bit cheaper 390 for the set.My next problem is the plugs are different does anyone know were i can get a set of the plugs to fit s4 rx7 550 cc

[Steve]

Try this

http://www.skylinesaustralia.com/forums/sh...=&threadid=7731

[JimX]

Where can you get a fuel rail for an R33 made to fit the top feed injectors? And how much should it cost to get them ultrasonic cleaned and flow tested? The last time I got injectors cleaned I think it cost about $170 for 8, but it was a long time ago and my memory is fuzzy.

[Lepperfish]

So 550cc injectors will be plenty for 600bhp ?

[T0nyGTSt]

Originally posted by Lepperfish

So 550cc injectors will be plenty for 600bhp ?

600hp is 447kW.

At the crank that's a damn lot.

I would imagine 660-740cc would be better but then your car idles bad.

550cc will be fine for ~450hp crank situations.

btw. where the hell are you getting these prices for the cheap RX7 injectors and rails?

My next choice is the Nismo 555cc and they are pretty much $1,000 delivered.

Any contact for the cheap injectors and rail? Hook a brutha up

T.

[omp]

What part no. is on the RX7 injector 195500-1370 (pink top square plug) or 195500-2020 (other colour purple(?) with oval type plug). I was told that the pink ones are nicknamed sperm or squirt injectors, even though they are easier to fit due to the plug they have more drama's tuning? I have microtech so no drama's in what injector I use as long as it fits. Also for a mild and tunable upgrade could you use CA18DET inj. at 370-380cc or RB26DETT inj. at 444cc? thanks

[Guest MFX_R33]

R33 GTSt injectors are already 380's, and RB26's are top feed so you still need a new fuel rail.

Jeff.

[JimX]

Also, GTR injectors are low impedance, GTS-t injectors are high impedance. So you'll need to modify them with resistor packs.

[omp]

Oh yea forgot to mention this is for RB20DET. The injectors I listed (CA or RB26) in regards to there resistance shouldn't be a drama due to the microtech I would imagine. What I am really after is a straight bolt in fit injector (top feed type like my standard ones) other than RX7, that would support 350hp at the wheels. I think RB26DETT would be the way to go, does anyone agree? Thanks Pete