91 tt 5spd mating with 95 na z32??

[oriZnal]

Hi I'm in a process of rebuilding a 91 tt to do a swap on my 95 na. Already got the engine and transmission out of it. My 95 na started to slip. Pretty much getting SZ flywheel along with the 6puck clutch. But while I do that I'm planning on replacing with TT 5spd so that I can rebuild the NA 5spd for tt swap. Been doing my homework and read few articles on how NA transmission is better for the tt? Correct me if I'm wrong. My main concern is will 91 TT transmission mate with 95na z32?? If it does, do I need to replace any sensors?? Do I have to shim the starter motor? Before I spend the money I just wanna make sure of what I would need to do to make this work. Plz feel free to leave any comments and opinions. It could be sich as why i should go for z1 flywheel and clutch kit over sz. I don't have too many people around me with experiences on z´s. My ears are open. Thanks


Most important thing. NA rear end with TT transmission. WHAT SHAFT?? TT SHAFT or NA SHAFT,,?? Thanks

[t.mcginley.jr]

This is from the Z1 swap guide pdf:

3. The NA and TT have the same 5 speed transmission model #, same splines on input and output
shafts, etc. and the housings are the same except for one small difference. The spot where the
starter mounts on the bellhousing on the TT is machined a little differently so that the starter will
properly engage the slightly larger diameter flywheel and so that the flywheel teeth won’t scrape
the inside of the bellhousing. You can use an NA 5 speed in a TT but you just have to shim the
starter out a little with some flat washers and sometimes grind a little out of the inside of the
bellhousing so the TT flywheel will fit inside.
If trying to use a TT trans in an NA you would either have to grind down where the starter mounts
so that it could engage the smaller NA flywheel or just use the TT flywheel, which could be used
with only a TT clutch. The internals are the same between the NA and TT 5 sp transmissions,
although all the 94 + models had redesigned stronger internals. We have used them
interchangeably without problems.
The automatic transmission is different for a TT, but the NA auto would still fit in place behind the
TT engine, but probably wouldn’t last long. They are different lengths and you would have to use
the corresponding driveshaft. Both autos are geared virtually the same but the TT one is built for
heavier duty.

4. The speed sensor gear in the transmission is different, different size for NA and TT because of
the different ratios in the diff. So if you are using a NA diff you need a NA speed sensor gear.
The speed sensor is different auto and 5 sp also.

5. The TT clutch has a larger contact face, a stronger pressure plate and a slightly larger diameter
flywheel. You can use a TT flywheel in an NA by shimming out the starter but can’t use a NA
flywheel in a TT without cutting down the spot where the starter mounts to the TT transmission.
You have to use a TT clutch assembly with a TT flywheel and the same with NA because of the
way the pressure plate bolts to the flywheel. The TTs also included a clutch booster assembly
because of the stronger pressure plate. The clutch pedal and master cylinder were different
because of a vacuum assisted clutch booster inside the firewall. The booster included two plastic
tanks for vacuum storage also, one under the driver’s fender and one under the clutch master
cylinder and a network of hoses connecting them all. Because of the clutch booster, the clutch
pedal and master cylinder are different between NA and TT but all the slave cylinders are the
same. You don’t have to add this setup when doing a conversion (a lot of trouble) the clutch pedal
will just be stiff but it’s not at all a problem in our opinion.

[nissanfreak12]

You can use the same shaft from your NA, the input are the same and the length of the transmission is the same. TT shaft will have 6 bolts for the rear end and NA will have 4 bolts. Swap out the speed sensor otherwise your speedo will be off. I would also strongly suggest the swap out the bell housing since the TT one is larger, not much but will cause issues with the starter engaging.

[oriZnal]

Hmmm... ok. Most of my questions are answered. But 1more thing. Do I have to shim the starter motor? Assuming that u guys know know I am installing TT transmission on a NA z32. Not the other way around. Haha

[Ace2cool]

Not if you swap the bellhousing.

[t.mcginley.jr]

Not if you swap the bellhousing.

That would probably be your best bet, nothing to mess up doing it that way

[oriZnal]

Not if you swap the bellhousing.

ok u guys got me all confused. i got a TT transmission going into NA z32. all i need is TT flywheel and clutch combo right? no shimming or no grinding the bell housing since i am installing TT transmission. swapping the bell housing only applies to NA transmission going into TT z32 right? if im wrong let me know, cuz u guys got me confused. haha thanks

[Ace2cool]

Oh, if you're getting a new flywheel, you're golden. Just put all the new parts on and rock out.