Rwd Wrx - New Skyline Rear End?

[wadou3a]

Hey guys, i have a rwd wrx, havent touched it in about 8 months (been overseas), car is now serviced, and have new ecu (EMS Stinger) and Front Mount etc.

Made 162.3rwkw on 7psi so very happy with that (my boost controller died so couldnt run any higher...

now onto the goods, right after it got of the dyno, went for a launch and crack, there goes the rear cv..expected as ive done so many diffs and drivshafts, dont want anymore headaches so me and my mech pulled of the rear end - im wanting to fit a skyline rear end bu dunno which is the best option?

R32, R33, R34? GTR? Gt-t? has anyone on here done this before? i heard the JUN sti had that conversion but i cant find details, and we ran into a problem already, both rear ends are the right track (163") compared to a r32 gtr, but the fuel tak wont fit so might have to go for a fuel cell

but thats ok weigth distribution got better also lastly what suspension? i have cusco on the front, and heard that r32 and s13/s14 have one kind (short ) v r33, r34 tall? i dont know? jus hoping someone has done it before!

[doo doo]

How much 'rear end' are you wanting to change? The WRX runs mcpherson strut suspension in the rear and s14/skylines all run double wishbone/four bar link suspension in the rear. These are really not interchangeable (do a google search on each one) The nissan pulsar GTiR actually runs something very similar to the WRX in the rear end, but i imagine STi gear would be a lot simpler to fit, not sure of the strength of the GTiR gear. (dare I say it's bound to be stronger than standard wrx gear?)

If it's just CV's and driveshafts you want to beef up then you could ask a driveshaft fabrication place to do some custom items for you, much easier to fit back into place. I did this with my custom AWD Bluebird (which ran a very similar rear end to yours) and they ended up using Lancer Evo driveshafts and custom cups/cages, and were very strong. (And 400 bucks. And direct replacement fit.)

Don't know about the diff, but you might also look into seeing if an evo diff could be fitted also, I understand Evo drivelines are pretty tough, and I only imagine that it would be easier than fitting skyline gear as it has a much more similar suspension platform.

You might still be able to fit parts of the skyline platform to your rex, might not be the easiest option though. Hope this is helpful.

[fletch rb30]

There was a guy in NZ running a rwd wrx and he fitted a s14/15 diff and axles and machined the wrx hubs a little to accept the nissan cv joint. no problems after that

I dont know how hard it was to fit the diff, but he was a bit of a butcher from memory so it cant have been that hard

[GDZ-14R]

WRX's run an R180 setup (earlier datto's and R31's i think), whereas S13-5's/R32-4's use R200.