4EAT compatibility
 

Looking at picking up a cheap '92 Legacy EJ22T Turbo automatic and just wondered if this model had the same 4EAT the '92 SVX had, and thus, the same problems with tranny overheating, etc. It IS a smaller engine and less powerful by about 70 hp if that makes a difference.

Re: 4EAT compatibility
 

No it's not the same tranny.

Re: 4EAT compatibility
 

It's 3.90 ratio and stronger than other Subaru transmissions. Possibly as many friction discs as the SVX transmission, but not 100% sure about that.

Re: 4EAT compatibility
 

So what are the requirements to fit a tranny to an SVX?

I guess the front part has to mate with the flywheel part, the final drive has to match the LSD and it has to handle the torque?

I have VTD, is that a system that goes with any Subaru automatic or do I need a VTD version?

So far, I'm pleased with the 4EAT but more gears wouldn't hurt. Also, Sportshift was fun. Can I put a 5EAT into my car?

Re: 4EAT compatibility
 

As far as transmissions fitting on the engines, practically any Subaru transmission will bolt up to the SVX. Getting the newer automatics to work properly is quite intensive.

Re: 4EAT compatibility
 

As in TCU input and control?

Re: 4EAT compatibility
 

If yours is VTD, you need to use another VTD trans with the same type (normally open or norm closed) C solenoid or if its different, have the matching TCU as well as ensuring the rear diff is the same ratio. All of this, plus needs to be a phase 1 transmission. (in the US, this is 90-98 EJ based Subarus)

Re: 4EAT compatibility
 

Could any of these automatics handle power in the range of 310-400nm (in case I ever get money to uprate the engine)?