Jump to content
SAU Community

Recommended Posts

I'm pretty sure RB25DET and DE are different. DE uses top feed injectors etc. As far as bolt up config, not entirely sure.

I've never seen a 20DE Neo but I know they exist. Not sure how different if at all

We have a bit of the Neo RB20DEs so I wanna compare as the Neo RB25DET I had got cut and the RB26 end adapted to itbut now I am looking at a cheap option of making an adapter plate on the RB25DET Neo cooling setup to adapt the throttles to. So just need a confirmation really.

I thought the DE use 270cc sidefeeds?

(happy to defer to your greater knowledge)

lol

Nah mate, I could be wrong also. I know the guys in NZ - RIPS use the RB25DE heads and manifold because they have the top feed injectors. Not sure on exact CC though.

If you really need to know for certain, ring RIPS in NZ, they will definitely know the answer straight away.

We have a bit of the Neo RB20DEs so I wanna compare as the Neo RB25DET I had got cut and the RB26 end adapted to itbut now I am looking at a cheap option of making an adapter plate on the RB25DET Neo cooling setup to adapt the throttles to. So just need a confirmation really.

PM Shanef to get an adaptor plate made up. He's got nothing to do these days as he's a dole bludger now so I'm sure he'd be happy to run around and find out the different patterns for you

I think the thing to confirm is which "RB25DE" you are talking about as in R32 or R33 . For some reason I always thought that R33 RB25's were side feed injectors though not 100% certain about the non turbo one . Obviously the R33 RB26 was top feed .

Cheers A .

I think the thing to confirm is which "RB25DE" you are talking about as in R32 or R33 . For some reason I always thought that R33 RB25's were side feed injectors though not 100% certain about the non turbo one . Obviously the R33 RB26 was top feed .

Cheers A .

Actually yes, you are right. R33 RB25DE is sidefeed and R32 RB25DE is top feed.

But are you trying to work out differences in general or differences in where it bolts to the head only?

Strangely enough the holes on the runners are slightly different between series I and II R33. I had to drill the holes slightly bigger on my chromed runners (which was a spare series 1 set) when i went to fit it to my Plazmaman plenum.

Edited by PM-R33
PM Shanef to get an adaptor plate made up. He's got nothing to do these days as he's a dole bludger now so I'm sure he'd be happy to run around and find out the different patterns for you

The pro's of shoulder surgery and medical certificates. Whats your excuse for sitting on your ass all day?

And yes, i have made these plates before

post-20917-1255958918_thumb.jpg

post-20917-1255958940_thumb.jpg

post-20917-1255958961_thumb.jpg

The pro's of shoulder surgery and medical certificates. Whats your excuse for sitting on your ass all day?

And yes, i have made these plates before

post-20917-1255958918_thumb.jpg

post-20917-1255958940_thumb.jpg

post-20917-1255958961_thumb.jpg

Oh ok, I'll explain then. Reasons why I would be sitting at any given time during the day:

1. Answering and email

2. Having lunch

3. Sitting at the workbench fixing your messy...no make that, dodgey wiring.

4. Sitting in the passenger seat of a car trying to get a short shifter out that you put in with a hammer and broke

5. Driving to your house to fix a mistake you have made

6. Sitting on the toilet pumping out something that resembles your face

7. Answering the phone

Please don't hesitate to ask for clarification on any of the points above or if you would like me to add to it. Either that or you could mind your own business and accept the fact that I am trying to throw work your way.

Oh and TriniGT, Shane does a pretty good job on the billet stuff. Competitively priced and local also so good for information if you have problems installing yourself.

So in essence it will be the RB26 entire intake side plus a 2" spacer right. Will have to check for clearancing but I think I should be alright on an ER34. Also, is it possible to use my stock top feed high impedance injectors or will I have to swap to top feed low impedance RB26 injectors with an RB26 rail and resistor? Not that it is a problem anyway as I have some 550CC already.

So in essence it will be the RB26 entire intake side plus a 2" spacer right. Will have to check for clearancing but I think I should be alright on an ER34. Also, is it possible to use my stock top feed high impedance injectors or will I have to swap to top feed low impedance RB26 injectors with an RB26 rail and resistor? Not that it is a problem anyway as I have some 550CC already.

The plates are 12mm thick so combined your looking at a spacing of 24mm. I highly doubt this will be enough to caus you any clearancing issues.

If the bolt pattern and injector spacing is the same between the rb26 plenum and er34 plenum then they will fit, however i don't know the exact answer to this question.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • Who did you have do the installation? I actually know someone who is VERY familiar with the AVS gear. The main point of contact though would be your installer.   Where are you based in NZ?
    • Look, realistically, those are some fairly chunky connectors and wires so it is a reasonably fair bet that that loom was involved in the redirection of the fuel pump and/or ECU/ignition power for the immobiliser. It's also fair to be that the new immobiliser is essentially the same thing as the old one, and so it probably needs the same stuff done to make it do what it has to do. Given that you are talking about a car that no-one else here is familiar with (I mean your exact car) and an alarm that I've never heard of before and so probably not many others are familiar with, and that some wire monkey has been messing with it out of our sight, it seems reasonable that the wire monkey should be fixing this.
    • Wheel alignment immediately. Not "when I get around to it". And further to what Duncan said - you cannot just put camber arms on and shorten them. You will introduce bump steer far in excess of what the car had with stock arms. You need adjustable tension arms and they need to be shortened also. The simplest approach is to shorten them the same % as the stock ones. This will not be correct or optimal, but it will be better than any other guess. The correct way to set the lengths of both arms is to use a properly built/set up bump steer gauge and trial and error the adjustments until you hit the camber you need and want and have minimum bump steer in the range of motion that the wheel is expected to travel. And what Duncan said about toe is also very true. And you cannot change the camber arm without also affecting toe. So when you have adjustable arms on the back of a Skyline, the car either needs to go to a talented wheel aligner (not your local tyre shop dropout), or you need to be able to do this stuff yourself at home. Guess which approach I have taken? I have built my own gear for camber, toe and bump steer measurement and I do all this on the flattest bit of concrete I have, with some shims under the tyres on one side to level the car.
    • Thought I would get some advice from others on this situation.    Relevant info: R33 GTS25t Link G4x ECU Walbro 255LPH w/ OEM FP Relay (No relay mod) Scenario: I accidentally messed up my old AVS S5 (rev.1) at the start of the year and the cars been immobilised. Also the siren BBU has completely failed; so I decided to upgrade it.  I got a newer AVS S5 (rev.2?) installed on Friday. The guy removed the old one and its immobilisers. Tried to start it; the car cranks but doesnt start.  The new one was installed and all the alarm functions seem to be working as they should; still wouldn't start Went to bed; got up on Friday morning and decided to have a look into the no start problem. Found the car completely dead.  Charged the battery; plugged it back in and found the brake lights were stuck on.  Unplugging the brake pedal switch the lights turn off. Plug it back in and theyre stuck on again. I tested the switch (continuity test and resistance); all looks good (0-1kohm).  On talking to AVS; found its because of the rubber stopper on the brake pedal; sure enough the middle of it is missing so have ordered a new one. One of those wear items; which was confusing what was going on However when I try unplugging the STOP Light fuses (under the dash and under the hood) the brake light still stays on. Should those fuses not cut the brake light circuit?  I then checked the ECU; FP Speed Error.  Testing the pump again; I can hear the relay clicking every time I switch it to ON. I unplugged the pump and put the multimeter across the plug. No continuity; im seeing 0.6V (ECU signal?) and when it switches the relay I think its like 20mA or 200mA). Not seeing 12.4V / 7-9A. As far as I know; the Fuel Pump was wired through one of the immobiliser relays on the old alarm.  He pulled some thick gauged harness out with the old alarm wiring; which looks to me like it was to bridge connections into the immobilisers? Before it got immobilised it was running just fine.  Im at a loss to why the FP is getting no voltage; I thought maybe the FP was faulty (even though I havent even done 50km on the new pump) but no voltage at the harness plug.  Questions: Could it be he didnt reconnect the fuel pump when testing it after the old alarm removal (before installing the new alarm)?  Is this a case of bridging to the brake lights instead of the fuel pump circuit? It's a bit beyond me as I dont do a lot with electrical; so have tried my best to diagnose what I think seems to make sense.  Seeking advice if theres for sure an issue with the alarm install to get him back here; or if I do infact, need an auto electrician to diagnose it. 
    • Then, shorten them by 1cm, drop the car back down and have a visual look (or even better, use a spirit level across the wheel to see if you have less camber than before. You still want something like 1.5 for road use. Alternatively, if you have adjustable rear ride height (I assume you do if you have extreme camber wear), raise the suspension back to standard height until you can get it all aligned properly. Finally, keep in mind that wear on the inside of the tyre can be for incorrect toe, not just camber
×
×
  • Create New...