R33GTST_S1 vs R33GTST_S2 vs R34GTT gearbox differences

[Torques]

What would be the differences between the gearboxes for S1/S2/GTT?

Are they interchangeable, is one stronger than the other?

I noticed that rebuild kits for S1 and S2 differ..

 

Thanks

 

Edited February 20, 2018 by Torques

[Griffin]

Are the the same externally?

[GTSBoy]

13 minutes ago, Griffin said:

Are the the same externally?

Yes, except that R34 is pull clutch.

Internally, I think the differences are details like synchro and selector parts having design changes.

[thebe]

So you cant tell the difference between s1 and s2 box by looking at the outside?

[GTSBoy]

I don't know if they're that identical. 

[thebe]

Yeah I've heard there might be some differences but havent been able to find any exact info. Looking to buy a second hand gearbox for my ecr33 and would prefer a s2 box due to cheaper and easier to find rebuild kits and if they have a bit better internals. Problem is, sellers dont usually know what series their box is

[Torques]

OK, thanks for that.

I would assume that with development of the car (S1/S2/GTT) design changed would have been made.

I read somewhere that the  late S2  (so 1998) gearboxes have larger synchros .. (no confirmed)

 

 

 

 

 

Edited February 22, 2018 by Torques

[Snara]

I was wondering the same but in R33 GTR S1, S3 and R34 Gt-four. I heard about double synchros in R34? True? I actually blow up my 3 gear in s1 box  

[Torques]

You should possibly ask about that in the forum .. I have no experience with these boxes, but it might be worth looking into buying a GTT gearbox (and the clutch conversion)

For R33 S2, the gearbox was changed 05/1998. The part number is 32010-21U60!