You will need a TII flywheel. I know for sure that you need the TII driveshaft, diff and halfshafts. You basicly need the whole drivetrain IIRC. One of my buddies tried to mate a TII diff flange onto his GTUs diff (because of the 4.3 gears) but the flange was shorter/longer than the diff. I would just get the whole TII drivetrain to simplify things. You will also need a clutch slave cylinder for a TII along with the PP and clutch plate.


Correct me if I am wrong, but that is the way I remember it.

 

I looked into it; its too much work. You need the TII starter, flywheel, pp, driveshaft, and halfshafts.
Also possibly a TII wiring harness. The swap requires some fabrication. Mazda did not make the TII transmission and easy swap for other RX-7's. Most any other 1st or 2nd gen '7 tranny will go in pretty easily, but not the TII.

 

I used to have an article on my site about 6 years ago with a nice how-to list, but I think it got left behind years ago...
Anways, you do not have to swap the rear end and half-shafts. The pilot on both TII and NA pinion flanges are the same, and you only need to notch the flange on the driveshaft for it to fit because of the slightly larger bolt pattern. A small stone on a dremel makes quick work of this versus the use-the-drillbit-as-a-grinder-technique. Clutch master and slave may also be retained. There is no wiring difference. No parts need to be fabricated, just some grinding if you don't want to mess with the rear end. My NA rear held up to over 450HP until the day I installed slicks. My rear end was swapped to a TII rear end the same day I installed slicks. Do the math!

Here is the official list:

TII Transmission (obviously!)
TII Flywheel / Clutch / Pressure Plate / TO + Pilot bearings
TII Driveshaft
TII Starter

You should be able to pick all this up for less than $500 used, although I would not trust a used clutch + PP! I did this over 8 years ago, and spent $800, and one afternoon with no lift. BUY a good pilot bearing puller, and a 2 1/8" socket + 3/4" --> 1/2" adapter so it will fit a standard gun. I would be happy to elaborate if anyone is interested.

 

You overlooked one part... you have to use the TII clutch slave cylinder- it IS different.

Also, I have heard, but have not tested myself, that you can use a driveshaft from an AUTOMATIC car with the TII transmission and NA differential. You might pick one up used (cheap) and test it.

Brad

 

If you want to keep is simple, you can use an N/A automatic driveshaft and it will bolt up as a direct fit from the TII trans to the N/A differential. I wouldnt want to modify the driveshaft fearing I would throw it out of balance. So the list for those who dont want to modify anything:

TII transmission
TII flywheel, clutch, etc.
N/A automatic driveshaft
TII starter

Now if you want to do the true swap, then you would also swap the differential, in which case you would use the TII driveshaft with no fitment problems.