Sr20 Os Gearset In Rb20 Box

[robots]

SR20 and RB20 supposed to be pretty much the same box.

Have anyone tried using sr20 OS gearset in rb20 box ?

[Mase]

Haven't tried it but they're very similar and I wouldn't be surprised if it all fitted fine. Why not just buy a stuffed SR20 box, throw the gear set in and then chuck the rb20 bellhousing onto the sr20 box as they're interchangable.

I just put a SR20 bellhousing onto a CA18 gearbox I had to use in my brother's SR20 180sx.

Edited March 7, 2009 by Mase

[RedDrifter]

I think the SR box is about 20 mm shorter than the RB20 box. Might want to do a bit more research?

[Boss-zilla]

From what i know they are both internally the same. I looked at putting a set into mine and it all seemed fine.

[Mase]

I think the SR box is about 20 mm shorter than the RB20 box. Might want to do a bit more research?

If people can run a RB20 bellhousing onto an SR box I cant see there being a problem. I havent used an RB20 bellhousing on an SR20 box before, just heard of other people doing it. I've been told the CA18, SR20 and RB20 boxes are very similar and bellhousings interchangable.

Edited March 8, 2009 by Mase

[Roy]

So does that mean an S15 box will go behind an RB20?

[Beer Baron]

do it brisby.

in fact justin is out of town for 3 weeks. pop over to my place and we can go down to the basement and whip his box out and swap it with yours. lol, he hardly ever gets to sixth anyway so as long as we leave his gear knob on there he probably wont notice for a while...

[Roy]

Couldnt do it to the bloke. He is too nice a guy. Have seen some well priced Nismo 6 speeds come up on yahoo. I need a box or diff change, box being preferable. The 25G is going to kill my car otherwise. LOL, but i want a 300rwkws std internal RB20

[Mase]

So does that mean an S15 box will go behind an RB20?

Couldn't tell you for sure, but if people can put a 5 speed behind there S15 SR20 then I can't see why not? Might need to change the tail shaft? The standard S15 6 speed isn't exactly a very strong box though.

Edited March 9, 2009 by Mase

[1400r]

nismo 6 speed is rated to 420ps

boss and co worker have both broken 1 each

one drifting one time attacking

[Roy]

Yeh, but i am a tight ass so am pretty kind to mechanicals when i drive my car, so would hope i could get one to hang together. Still trying tpo do some numbers on the OS Giken gear set and also on PPG box, though ongoing maintenance is my main concern with a helical dog box from PPG. LOL i am easy on mechanical parts but hard on panels

[Beer Baron]

LOL i am easy on mechanical parts but hard on panels

me too mate. it's the only way to be!

[T04GTR]

yes. direct fit. but has to be a rb turbo box with the double synchros.. box length is irelavent as your not changing the main shaft.

s15 getrag will not fit. completly differant.