Author Topic: Will an A3 Auto trans work in A1 Turbo Diesel? (Read 2341 times)

caddygtd · « **on:** January 02, 2006, 02:28:30 pm »

I just got an 83 Jetta TD with an auto trans for my girlfriend to drive.
And I'm wondering if I could drop an auto trans from an A3 Jetta or Golf into it.
The A3 auto trans is a 4 speed, which would be an improvement over the stock 3 speed auto in there now.

But, I suspect that the A3 trans probably has some electronics and an electronically locking torque converter for highway cruising, which might make this a difficult job.

Does anybody know what the feasibility of this is?
Also, is there a difference between A3 diesel and gas transmissions?

Maarten · « **Reply #1 on:** January 02, 2006, 02:41:58 pm »

One thing I know is that you'll need to fabricate your own geabox supports... those are different from the mk1/2 supports and even from the manual Mk3 supports.

Not to mention the electonics that could not work without the engine ECU installed and working to communicate with.

BlackTieTD · « **Reply #2 on:** January 03, 2006, 06:46:12 am »

you would likely be better off with a mkI or mkII auto box.

caddygtd · « **Reply #3 on:** January 03, 2006, 07:03:56 am »

Quote

you would likely be better off with a mkI or mkII auto box.

I did some more research about the 4 speed auto trans and have come to the conclusion that it would be a lot of work if not impossible due to the computer control.
It would make more sense to do a complete tdi swap.

Thanks for the replies.