I curently have a '87 n/a and I want to slowly acuire turbo parts for a turbo swap, but my main question is. The synco's are going in the n/a trany and I'd rather get a turbo trany now and just throw it in than rebuld this one and a year down the road buy a turbo drive train, so in short. Can I put a '87 turbo trany into a stock drivetrain '87 n/a without changing anything but the clutch(it's going anywase)?

 

I did it and you need to do the following. You'll need a TII flywheel and clutch along with a TII starter. The driveline won't bolt up to the N/A diff so you'll need either a TII rear diff along with TII axles or just mod the flange on your existing diff. But otherwise it will bolt right up.

 

No. You'd need a different driveshaft, starter, slave cylinder, and flywheel. You could get away with using an automatic driveshaft, though I highly don't recommend it, as it's 2" too short and the yolk isn't seated completely.

 

Different slave cylinder? And I don't think an auto shaft will work. In fact I'm pretty sure because I swapped a TII trans into an auto and the shafts are way different.

 

Yes, the slave cylinder on the tranny is different between the n/a and tII. The automatic driveshaft will work, the yolk will fit the tII tranny, and the flange for the rear is the same size as an n/a, the only problem is, it's two inches short, so the yolk doesn't seat all the way.

 

I had to mod my rear diff flange to bolt up the TII drive shaft. It was a S5 auto with the 3.90 rear end. But the TII shaft was massive compared to the auto shaft but really didn't wiegh more. I just can't imagine why the N/A slave would be different. I was fortunate enough to have pulled all the parts off a TII for my swap.

 

They are, the N/a one is skinny, the tII is a bit beefier. I guess it has to do with different pressures on the pressure plate. Yes, the driveshafts ARE extremely different, the TII is designed to hold a hell of a lot more power than the auto, thus why it's 'thicker', but it'll fit without having to drill, like you did with the TII drive shaft.

 

https://www.rx7club.com/showthread.p...o+tranny+n%2Fa

https://www.rx7club.com/showthread.p...o+tranny+n%2Fa

https://www.rx7club.com/showthread.p...o+tranny+n%2Fa

https://www.rx7club.com/showthread.p...o+tranny+n%2Fa

https://www.rx7club.com/showthread.p...o+tranny+n%2Fa

https://www.rx7club.com/showthread.p...o+tranny+n%2Fa

 

I'd rather drill and have the right drive shaft than have the weak *** auto shaft that doesn't fit right. So will a TII shaft bolt up to a N/A rear diff?

 

no, it won't.

 

Any real benefit of having a TII trans over a N/A trans? I mean other than handling more power. I've heard the gearing was a little lower on the TII trans. Also some guy gave me some bullshit story about how a TII trans will just slow down a N/A motor because its like harder to push.

 

It has a hair taller 5th gear, and that's about it other than strength.

 

it'll last a lot longer than an NA tranny (i went through 2 in one year) and it will only slow down the car just a tad...it seems like it's about 50 lbs heavier :P

i'd like to think of the turbo II drivetrain swap as 'preventative maintenane' on our aging NA's

It's good to do if you're really attached to your NA...otherwise...

the time and money it takes to completely convert to a Turbo II will wind up costing more than if you bought a TII to begin with.