Gt-R Shifter Types?

[Gav]

I've recently changed my gearbox and the new one came with a longer shifter with a smaller socket and nylon boot. The increased length means that the leather cover no longer fits (lifts the plastic surround) and the gearchange is a longer throw.

Note from the picture that the new shifter (shown on the top) is longer both in the black body and the silver arm as well having a smaller socket. The socket size difference means I can't fit the old shifter back on.

Any ideas as to why there should be different models and how I can go back to the origial setup?

[The Dan]

Both are factory shifters. The top one looks like RB20DET, the bottom one looks like GTR

The only difference is the bush size on the bottom and the overall length. The throw should be the same inside

[The Dan]

You can swap the bushes on the bottom quite easily

[Gav]

  On 16/03/2011 at 2:40 AM, Elite Racing said:

You can swap the bushes on the bottom quite easily

Unfortunately the socket of each is a different size. The original shifter(bottom in pic) has a socket larger than the top socket/bush combined.

[The Dan]

  On 16/03/2011 at 2:44 AM, Gav said:

Unfortunately the socket of each is a different size. The original shifter(bottom in pic) has a socket larger than the top socket/bush combined.

The outside diameter of the nylon bush is the only difference I am aware of. We have swapped the nylon bushes over many times.

There is a difference between RB25 and GTR, though, so you may have an RB25 shifter or vice versa.

Let me get this straight, you have changed an RB26/RB25 gearbox for a RB20 one? Why on earth would you do that?

[Gav]

  On 16/03/2011 at 2:48 AM, Elite Racing said:

The outside diameter of the nylon bush is the only difference I am aware of. We have swapped the nylon bushes over many times.

There is a difference between RB25 and GTR, though, so you may have an RB25 shifter or vice versa.

Let me get this straight, you have changed an RB26/RB25 gearbox for a RB20 one? Why on earth would you do that?

I bought a reconditioned GT-R box with an OS gearset fitted. It came with the longer shifter (smaller bush) already fitted.

I'll double check the socket again, but I'm pretty sure the ID of the bushes are also different (i.e. the sockets are different diameter).

Thanks for your help so far.

[The Dan]

  On 16/03/2011 at 3:15 AM, Gav said:

I bought a reconditioned GT-R box with an OS gearset fitted. It came with the longer shifter (smaller bush) already fitted.

I'll double check the socket again, but I'm pretty sure the ID of the bushes are also different (i.e. the sockets are different diameter).

Thanks for your help so far.

the GTR bush should be the large one.

So if it's a GTR box, the smaller bush should not be able to fit the GTR gearbox.

Failing that, take both bushes off and try to swap them, if the larger bush will not go on (requires a lot of force and you need to pop it in at an angle) then go down to your local nissan and buy the RB25 shifter bush which should fit directly (but it's larger like the GTR one so I don't know if you are going to run into trouble there.

I still can't get my head past the smaller bush, it shouldn't have a small hole in there in the first place

[Beer Baron]

that is a weird one! love to know how you sort it out.

[Gav]

  On 16/03/2011 at 5:27 AM, Beer Baron said:

that is a weird one! love to know how you sort it out.

I reckon I know what's going on here now.

The shifter that came with the gearbox (which I now assime is either an RB20 or SR shifter) definately accepts a nylon bush around 5mm diameter smaller than my old GT-R shifter as per the above pics.

So....when I have a look at the gearbox socket that accepts the bush, there appears to be a sleeve pressed in that reduces the socket diameter by (yes, you guessed it) 5mm.

So......If this is the case what the previous owner has done is mada a modification that allows a taller shifter (i.e. comes to hand easier from the steering wheel and back) without affecting the throw. Apart from the leather boost sitting now slightly lower, everything works well and changes smoothly.

BTW - I did try to remove the sleeve using long nosed pliers, but it's in there well and good. I'll consider if I try to remove it next time the gearbox is out.

[SkylineSky]

Well I don't know what is going on down your way but the shifter actually goes in to the transfer case (gtr) and not the gearbox as the transfer case bolts to the gearbox, Did you get another transfer case with the box, the smaller bush is for a R34 the larger bush is R32/R33

Dave

[The Dan]

  On 28/03/2011 at 8:55 AM, SkylineSky said:

Well I don't know what is going on down your way but the shifter actually goes in to the transfer case (gtr) and not the gearbox as the transfer case bolts to the gearbox, Did you get another transfer case with the box, the smaller bush is for a R34 the larger bush is R32/R33

Dave

Referring to the gearbox as a whole unit.

[rehab2010]

Sry for hijacking the thread.

How difficult/easy is to access and replace this nylon bush - can it be all done from inside the car.

Does this nylon bush require replacing, do they get worn - reason why I'm asking is that I'm just chasing some more "feel" when I'm changing gears and just wodnering if new bush would provide me with a more solid shift-feel.