Jump to content
SAU Community

R32 RB25DE - converting to RB25DET

MR R32

By MR R32,
in Engines & Forced Induction

 Share

Recommended Posts

MR R32 Experienced

MR R32

Posted
Posted

Hi Guys,

I am looking at buying an R32 with an RB25DET. I would like to take the engine out and swap it with an RB25DET for obvious reasons.

I have been told that the brakes are the same on the 1993 R32 RB25DE as the R32 RB20DET, and that only the engine, gearbox will need to be changed.

Can anybody please offer me some information, or advice ASAP as I am looking to buy tomorrow or the next.

Thanks

Link to comment
https://www.sau.com.au/forums/topic/48924-r32-rb25de-converting-to-rb25det/
Share on other sites
Pva_Glue Grand Master

Pva_Glue

Posted
Posted
Hi Guys,

I am looking at buying an R32 with an RB25DET. I would like to take the engine out and swap it with an RB25DET for obvious reasons.

I have been told that the brakes are the same on the 1993 R32 RB25DE as the R32 RB20DET, and that only the engine, gearbox will need to be changed.

Can anybody please offer me some information, or advice ASAP as I am looking to buy tomorrow or the next.

Thanks

ok let me get this right, I am sure its typo, so you want to buy a R32 with RB25DET then you want to take RB25DET out and replace with RB25DET... for obvious reasons... :confused: reason would be different engine but same spec?

probably need to change Breaks..... suspension if you have the money, get some new Intercoolers, new engine management ECU...etc.

good luck

MR R32 Experienced

MR R32

Posted
  • Author
Posted

Sorry - it was a typo.

It currently has a non turbo 2.5L engine and I would like to replace it with an RB25DET.

The car is a 1993 model and the owner claims that this model has the same brakes as the R32 with a RB20DET which means brakes would not need to be changed.

  • 2 weeks later...
geordie Proficient

geordie

Posted
Posted

Thats wrong, brakes are N/A spec, single pot calipers, smaller rotors and a 4 stud hub. So unless the car has been upgraded then the brakes are no different to other N/A skylines. The diff is also different, turbo's came with LSD. Un sure to suspension specs but i am going to asume that the spring etc aren't the same as a turbo spec vehicle. Could be wrong, the weight difference in the models would be fairly similar (1380kg for mine, which is the GTS25) Apparently the intake manifold on the R32 Rb25de is the same as the Rb20det...

Basicly, look at the caliper, the 4pot models are larger and have nissan written on them.

Hope this helped.....

predator Grand Master

predator

Posted
Posted

geordie is incorrect.. some non turbos also come with LSD.. and also the same brakes as the turbo. Factory options can mix and match to give anything.

The brakes are probably the same as the rb20det in the latter models on the rb25de's. So you are correct mr r32 in that you'll just have to change the engine.. and the gearbox would probably be recommended but non mandatory to start(the rb20det gearbox will fit behind an rb25det)

RaseR Collaborator

RaseR

Posted
Posted

predator, you are wrong - my '92 R32 GTS-t, and nearly every other one I've ever seen have had 4 piston brake calipers as standard, not 2....

The caliper I am referring to has the silver NISSAN logo on the front, Sumitomo stamped onto the body, and are the same as used on the Z32 300ZX and the S14 200SX.

  • 3 years later...
BigC1988 Enthusiast

BigC1988

Posted
Posted

I just got my RB25DET (series 2) and I was hoping you could help me with some questions.

My Skyline is non turbo so it will be a big step with the RB25.

Now then, my first question is about the gearbox mounts, I hear they aren't the same and I will also have problems with the speedo meter. What do you know about this? Can I use the Xmember of the R33 ??

The second is about the harness, everyone that has ever swapped an engine told me that the harness is the most difficult part of the swap. Do you have the diagram of the R32 and the R33 (still can't find it for the R32) and some pointers on how this is done??

Hope to get a reply from you soon

Carlos Rudolph

GTS4WD Grand Master

GTS4WD

Posted
Posted

Yes.. speedo is out of wack..

Its one of the gears in the Gauge cluster.. they used to make cogs to change it to the correct speed.. but these days they are very hard to find..

Your speedo will read over.

There are a few R33 gearbox into R32 threads floating around.. have a look. Off the top of my head it is ia straight fit.

In terms of harness.. there isnt really a hard part.. just swap them over.. as you need to run a 33 ECU anyways..

Best advice I can give you.. look for an R32 and R33 workshop manual for the wiring diagrams..

I have seen a fair few Rb25 into R32 threads in the DIY section of this forum..

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
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Dose Pipe Sutututu
      Intercooler Choice

      By Dose Pipe Sutututu · Posted

      Plazmaman 76mm Pro Series, done. Data to back it up, I posted up somewhere here a few years back
    • GTSBoy
      RB26 swapped gtst

      By GTSBoy · Posted

      So.....wire it up appropriately. You can't use the resister pack with those injectors anyway.
    • r33.antwone
      RB26 swapped gtst

      By r33.antwone · Posted

      that’s the thing i’m on ID1050s and haltech not getting power due to the injector resistor 
    • Toilet Goblin
      Intercooler Choice

      By Toilet Goblin · Posted

      ahh okay cheers, i was thinking of just going for the m073, think m079 would be way too overkill considering they are same size. 
    • GTSBoy
      HK Premier with plans for slight mods, but keeping clean and simple

      By GTSBoy · Posted

      My first car was a HG. I'm very familiar with them. A mild cam upgrade is a good idea. The 186 is a very flexible engine - meaning it has good torque from down low. You can give up a little torque down low for quite a lot more excitement in the mid range, and a bit more up top - but they are not exactly a rev monster. You need to upgrade valve springs at the minimum. For a bigger cam, you'd want to make sure it wasn't still running the original fibre cam gear. That would be unlikely, given that most of them shat themselves in the 70s and 80s, but still within the realms of possibility. Metal cam gear required. Carbies are a huge issue. The classic upgrade was always a Holley 350, which works, but is usually pretty bad for fuel consumption. The 186S had a 2 barrel Stromberg on it that was very similar to the one on the 253, and is a reasonable thing if you can find one, and find someone to help you get it set up (which is the same issue with setting up a 350 to work nice). The more classic upgrade was twin sidedraught CD type carbs, or triples of same, or triple Webers. The XU-1 triple Webers being the best example. You can still buy all this stuff new, I think, but it's a lot of coin to drop. And then the people able to set them up are getting fewer and further in between. There's still some, but it used to be everyone's** dad and uncle could do it. **Not everyone's! But a lot. All in all, I wouldn't get too carried away with the engine. Anything you do to it without a full rebuild for power and revs will only make it slightly faster. I am all in favour of a complete teardown rebuild, with nice rods and pistons, 10 or 10.5:1 compression, and a clean port job with at least a big enough cam to run 98 with that compression, if not bigger. And if I did that to a dirty old red motor, I'd want to inject it too, which I'd struggle to fight against the devil on my shoulder that would argue for ITBs and trumpets. But the bills would start to mount up, and it will still never make stupid power. OK, a few people still know how to build absolutely mental red motors, courtesy of the work that went into HQ racing and modern knowledge being applied. But even a 300HP red motor is no match for an RB20 with a TD06. So you have to decide what it's worth to you. I'd just put a set of 6>2>1 extractors, a 2.5" exhaust and an electronic ignition conversion/dizzy on it and just run the old girl like the fairly slow old girl that she really is.
×
×
  • Create New...