Driveshaft Question
 

I keep hearing different answers to my question.

Will an Automatic Driveshaft connect a Turbo Transmission to a Naturally Aspirated Differential?

Sonic rat did it...although he said only half of the yoke was in the trans.....

so YES...but id only do it as a temp. thing.

So what exactly is the problem?
Is it bolt pattern? Size? Length?

Length is an easy thing to get fixed.

it's about an inch short

I did it in my old GXL with no probs.. and i am in the process of doing it in my new one.. as i just bought a new auto shaft..
Dave

I am wanting to do it right the first time. I am planning to put the turbo tranny into my vert, do I need to find a turbo driveshaft or can I get a shop around my area to custom fit it. I am planning on leaving the rear end alone or is that even a good idea?

all you need to do is sell the vert and buy a t2.lol

But then you wouldn't have a convertible TII.

I still haven't decided if i'm going to use an N/A diff or a TII diff. An N/A diff means I wouldn't have to switch out the halfshafts.

I also don't think that there's a problem with the amount of power an N/A diff can take, as opposed to the TII one.

I believe I've been told around 250rwhp for the n/a diff. But I think it could handle 400rwhp, ofcourse if you drove it like a grandma, but a hard lanch with 400rwhp on it would most definetely kick its ass. Anybody know how much it would cost for a driveshaft shop to extend the yoke on a auto driveshaft?

So I take it that no one is able to give me the ifo I need?

Aren't you reading the replies??? To mate a TII trans to a n/a diff, you can use a automatic driveshaft, although the yoke doesn't feet all the way...SO, you can have a custom yoke put on so it fits all the way. The n/a diff. is supposed to be good for 250rwhp...

Let me make sure that I have this straight before I spend money or f*** up my car. Get an auto tranny driveshaft and have a custom yoke put on the end to the turbo tranny! So what kind of custom yoke. Something doesn't seem right here?

Dude, the reason no one gives you a straight up answer is because there isnt one. It depends on your level of personal paranoia regarding your car and safety.

Yes, the thing will physically bolt in and turn ok. but, It is only mated inside the transmission (front yoke) about half of what it should be. This means instead of the yoke being 3" onto the spline shaft securely, it is only about 1.5" onto it...still most likely not going anywhere, but more unsteady no doubt. IN theory, with enough power or a hard launch, you could break the internal splines on the (only half used) front yoke, or even somehow persuade it to exit the transmission altogether, meaning you dont go-go anymore. This is pretty unlikely, but still, it was designed to be inserted the full 3", and not 1.5.

Take this however you will. The more acceptable way would be to have a DS shop extend the DS body by that same amount, 1.5" or so, to move the yoke on in to the correct position. You dont have to change it, just make the shaft longer.

BTW, I have some auto trans DS's I can sell for $40 each, for you to experiment with. Shipping extra, paypal preferred.

So the auto tranny yoke will fit into the t2 tranny?

Yes. The auto trans front yoke fits auto or t2 trans. The NA 5sp front yoke doesnt fit either. The NA (5sp or auto) rear flange fits the NA rearend, regardless of ratio or LSD/non status, and not the larger t2 rear.

To put it simply, there are 2 types of front yoke, and 2 types of rear flange.

The 5sp NA has the small front yoke and the small rear flange.

The auto NA has the large front yoke and the small rear flange.

The t2 has the large front yoke and the large rear flange.

The auto is shorter than the t2 and NA5sp, which are the same length.

Wow. The man himself replies. :)

Kevin, I've said this time and time again, but you're awesome.

That's all. I've already made my decision about driveshafts and rear-ends.

Victor

PS: expect a call from me within a couple days about a whole bunch of parts I'm going to take off your hands :)