[hachiroku]

How difficult or impossible would it to swap a 2012 Aisin 8-Speed into a T2 3.0 TDI replacing the ZF? 6-Speed?

if all bolts up, I'd guess that ECU pairing and coding would be the only issue as they're of a different generation.

 

[gnrnr]

Aren't the T2's fitted with an Aisin 6 speed, not a ZF?


The programming would be the issue with doing it, assuming it mechanically bolts up.

 

[hachiroku]

you may be correct on that one. its been a while since i've done research on T2 transmissions...

 

[Spiegelglatt]

All Touareg automatics have been Aisin sourced. The only ZF transmission was a manual (stick) that came in the five cylinder diesel.

 

[Yeti]

You willing to loose the transfer case with doing this to just add two more gears? I doubt seriously you could keep it with the 8 spd since we had none sourced here with the transfer case installed too.

 

[roalco]

The eight speed does indeed have a transfer case! Yes, it is a Torsen based single speed, as opposed to the older two speed Haldex based unit, but without a transfer case, how do you think the power gets to the front wheels?

 

[4ePikanini]

The eight speed does indeed have a transfer case! Yes, it is a Torsen based single speed, as opposed to the older two speed Haldex based unit, but without a transfer case, how do you think the power gets to the front wheels?

The terrain tech models have a high/low range transfer case.

The gearbox talks to everything. Engine, HVAC, comfort electronics etc.

Unless you are a super duper software engineer knowing the VW coding by heart I doubt it would be possible.

The only way would be to swap everything over and it's much easier just to sell and buy a T3 than to do the swap.

The 8 speed is great but not that much greater than the 6 speed to warrant the effort of a swap.

 

[chewblekka]

You’re not gonna be able to control that 8 speed, since the T1/2 never came with it, the modules won’t talk to each other. Different protocols, etc.
What do you hope to gain from this?

 

[TommiT]

Four year old thread here Chew!

I neatly got tripped yp by a 12 year old thread this morning!

 

[chewblekka]

Four year old thread here Chew!

Odd, it showed up under recent threads.

 

[Buster_BE]

Does anyone knows if the 8-speed and 6-speed gearbox houses have the same interference flanges? To engine and transfer case?
Software is not the issue here from mine side.

I am willing to make the swap on a V10 TDI engine.

 

[SaVAGeSoot]

Are you sure the 0C8 will hold the V10 tq output?

 

[rgh0]

V10 has 750 Nm of torque the later V8 TDI that used the Aisin 0C8 transmission had 800 Nm. I understand the transmission is actually deisgned for a maximum of 1000 Nm

 

[SaVAGeSoot]

Yes, but the only documentation I've ever seen says something to the effect of depending on build .. I wouldn't know which code is rated for this!

 

[rgh0]

The biggest challenge with this sort of swap will be getting the engine and transmission control modules talking to each other to properly control the gear changes as this control programming will be transmission and engine specific. As you observe while the 0C8 transmission gear set may be able to handle 1000 Nm, the torque conveter and lock up clutch in a V6 7P 0C8 may not be rated for that and will probably be different from whats used in the V8 TDI 7P. People have tuned the V8TDI to do 1000 Nm of torque and i have not heard of them destroying the transmission .... yet

 

[Buster_BE]

Does anyone knows if the 8-speed and 6-speed gearbox houses have the same interference flanges? To engine and transfer case?
Software is not the issue here from mine side.

I am willing to make the swap on a V10 TDI engine.

Can somebody read my question again and reply to that?
Again software adaptation is no issue here, thanks.

 

[Buster_BE]

Can somebody read my question again and reply to that?
Again software adaptation is no issue here, thanks.

TR80SD can handle 850Nm, info found in spare part catalogue no issue here I think.