Jump to content
SAU Community

Recommended Posts

Hello,

I currently own a silvia, but was thinking about buying an 4 door R32 skyline with the intention of doing an rb25det conversion (i have my reasons for going after the 4 door version too). I am familiar with converting silvias to rb20, as i have done one conversion before with a mate, and am hoping that this conversion is close to the same complexity (hopefully easier!). :D

(incase people are anything like they are on ns.com, yes i have searched already!)

What i would like to know is the following:

1. Is the engine a straight drop onto the r32 cross-member or is the r33 cross-member utilised or do people just customise the mounts?

2. Drive shaft and lsd - is it possible to re-use the r32 drive shaft with the rb25 gearbox or are they different lengths, different yokes etc....?

3. Do brakes need to be upgraded in order for the car to pass engineering and be road worthy (in NSW)?

4. Any dramas with power-steering lines or pumps etc...? (not to concerned with the a/c)

5. Are there any other dramas that i have missed or that i should know about... i.e. im guessing the rb20 dump pipe wont be able to be re-used etc...?

Thanks for your help in advance,

Lucius.

Edited by Lucius
Link to comment
https://www.sau.com.au/forums/topic/106222-r32-engine-conversion/
Share on other sites

Do another search, seriously there's a 25 into 32 post atleast once a month. But seeing as it's a friday and i'm bored at work:

1) Use the rb20 engine mounts on the rb25 with rb20 crossmember

2) R32 driveshaft can be used but needs to be shortened and a new yoke and uni's installed to fit up to the 25 box

3) A brake upgrade is a good idea as the 33 has bigger brakes. rears are the same.

4) Use the r32 power steering pump and bracket to avoid hassles with the lines

5) Yes. (search :D) rb20 dump fits.

did i mention search? There's a bit more to it than you think, but it's not particularly difficult. Wiring is the fun one.

*r32 crossmember should be fine as are used to put both rb20's and rb25's in s13's

*tail shaft will be a different length, as the rb20 and rb25 gearboxes are different lengths.

* dont see a problem with using the rb20 dump pipe as the turbo/dump flanges are the same on rb20 and rb25

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

    • Drain it. I got official Matic D but you can get whatever is listed as Matic D compatible.
    • Thanks guys,  Yeah I should at least have them dynoed, at least then I know what I've got as a starting point.  The springs on these are hard as rocks. I vaguely remember Russman saying he was going to sell the shocks to me with the rocks fitted, as he was keeping the softer springs for his new setup.  I didn't click at the time but of course that was to let me know the shock/spring wouldn't be matched.  I also remember pricing up new springs around 2014-15, but, house, money etc. it never happened. So that was another reason to have them rebuilt. I have rebuilt the forks on many motorcycles so I think I could handle the seals on these easily enough, but getting the valving right would be a rabbit hole I cbf exploring.  Duncan, interesting to hear RP was tuning these back then. I might give them a call.  In the mean time I have been busy fitting sway bars. The Whiteline rear sway bar I purchased 15 years ago finally got fitted, along with the Whiteline front bar that showed up last week. Just waiting on new links for the front sway bar to finish that off.  And my spare set of advan AVS VS5's should be back from the powder coaters in a Pearl White finish sometime this week, with a set of Hankook RS4's lined up for fitting.  And then I just have all the suspension bushes to do. A comprehensive kit is on the way... Lots to do before the Ararat hill climb. Cheers guys 🍻   
    • Nice car! I’m glad folks in the US have gotten past the FnF and are buying real cool cars like the 260RS I was with a bunch of mates in Portland about a year ago and spotted a green Stagea (just a regular 2.5T AWD) parked about 2 blocks away and they were like “a what?” So I made a bet with them for a round of beers and said “ok one of you run down there and tell me if the steering wheel is on the correct side” 5 mins later the American comes trudging back up the hill and goes “he’s right guys. Ok what beer do you want?”
    • Should replace OR drop the tank, give it's good clean. Might be worth replacing that entire fuel level/pump/cradle thing with this: https://frenchysperformancegarage.com/products/fpg-s13-180sx-r32gtst-single-pump-hanger-kit-billet-hat-6-v3-fpg-089?gQT=2  
    • Thank you so much for the help
×
×
  • Create New...