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Engine Specific Info and Questions => IDI Engine => Topic started by: caddygtd on January 02, 2006, 02:28:30 pm

Title: Will an A3 Auto trans work in A1 Turbo Diesel?
Post by: 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?

Title: Will an A3 Auto trans work in A1 Turbo Diesel?
Post by: Maarten 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.

Title: Will an A3 Auto trans work in A1 Turbo Diesel?
Post by: BlackTieTD on January 03, 2006, 06:46:12 am

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

Title: Will an A3 Auto trans work in A1 Turbo Diesel?
Post by: caddygtd 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.