Put your fc skills and knowledge to the test and see if you can figure out what's goin on here (because I sure as hell can't)

This is the situation:
1. The car has a turbo motor + TII transmission swapped into it.
2. The transmission has a TII driveshaft attached to it, that also connects to the rear diff.
3. The rear diff is of unknown origin, but has the little white tag on the filler plug.
4. The halfshafts that are connected to the diff are 1990 GXL NA shafts.
5. Everything fits

How is that possible?
Im guessing the diff must be a TII LSD, as it mates to the TII driveshaft. But how is it that the NA half shafts will bolt up to the diff? I thought they were a different bolt pattern!

 

T2 differential will have 11 cooling fins and an N/A will have 9.

 

The NA I took off the car has 8.
The diff on the car has 9.
I think there are more diffs than just the 11 fin and 9 fin

If what you're saying is true, how is the TII shaft mating up with the diff if it's NA.

 

You have an aftermarket driveshaft.

 

First pic is the NA diff taken off the car

Second pic is the mystery diff.

Note the 8 ribs on first, 9 on second.

 

Do i? It sure looks like a 20 year old TII driveshaft

 

There is no magic going on here. You have an NA rear end and axles. You have a TII engine and tranny.

Therefore you have a TII driveshaft with an NA flange. Such a driveshaft is custom made, or aftermarket.

 

LargeOrange- yeah, you're right. The pic on the right is an s4 GXL viscous-type LSD, and the driveshaft must be custom.

You are winner ha ha ha!

 

dosen't mazdatrix sell a adapter driveshaft similar to that? for T2 To Na Rear end

 

Yes they do, and supposidy the automatic driveshaft bolts up in this situation as well but don't support as much power.

 

i kind of just ran into this problem, being told the diff was from a turbo to find out it was just a na lsd when i went to bolt up the driveshaft and it was a no go

 

just take a die grinder to the holes and elongate them a little and the TII driveshaft will mate to a N/A rear every time and is cheaper.

 

the automatic driveshaft dosnt actually work. it does bolt to the NA diff, and the shaft does fit the TII tranny. but its 2 inchs shorter because the auto tranny is longer... so really it would just dangle between the two.

 

wouldnt that make it weak and likely to brake or throw it off balance

 

yes. do not do this. and remember, once you grind it off. it can not be put back...

 

has anybody done this and had it work, id sacrifice a turbo driveshaft over $300 + for a mazatrix shaft but only if it wasnt dangerous

 

that would be a NA automatic driveshaft into a s4 na LSD unit

i *do* have a S5 T2 rear, S5 T2 halfshafts, and a S5 T2 Driveshaft for sale that I coudl ship to your door. PM me if you are interested.

 

No but I had my na auto drive shaft extended so it could mate with my TII Tranny.

 

The amount being taken off is very minimal and its still a lot stronger than an automatic driveshaft. I got the idea from hypertek and there are many others here that have done this too without any negative results

 

I take mine to the drag track and the roadcourse all the time! No Problems! (slotted TII shaft to NA rear!)

 

I've seen the driveshaft getting slotted several times. As long as you have someone even moderately skilled at cutting and they measure out their work, their should be no problem.