ontherun987 Posted July 21, 2022 Share Posted July 21, 2022 Will a 1993 legacy auto transmission fit into a 1991 legacy with an auto transmission? My dad got a leak in the trans cooler line on his 1991 legacy and drove 1/4 mile to the house. So I found a donor car that was in a mild fender bender. How do I know if I have a match? Thank you for you guys help Quote Link to comment Share on other sites More sharing options...
heartless Posted July 21, 2022 Share Posted July 21, 2022 (edited) 1/4 of a mile? thats it? fix the leak, refill the trans and test it out... you may not need to do any swapping if it only went a 1/4 mile btw - sweet sedan... dont often see them that old Edited July 21, 2022 by heartless Quote Link to comment Share on other sites More sharing options...
ontherun987 Posted July 21, 2022 Author Share Posted July 21, 2022 Yep but I think the damage was done already(he's not sure how long it was leaking). I did fix the leak, It didn't shift right after I refilled it.So I loaded it on to a trailer took the car to my local guru. They took off the trans pan and said "it looked like a hand grenade went off in there, it's toast". So I parked it like a year ago and here we are. I also needish the ej22 from the donor for my car 2 Quote Link to comment Share on other sites More sharing options...
lmdew Posted July 22, 2022 Share Posted July 22, 2022 Should be fine. Might need the TCU from the car as well. You can search the Trans# that is on the front of the bellhousing. Transmission ID Chart_Public.pdf Subaru Transmission Chart.pdf Quote Link to comment Share on other sites More sharing options...
ontherun987 Posted July 22, 2022 Author Share Posted July 22, 2022 I bought the donor car last night, here are the trans numbers. I can't find much on the TZ trans numbers. Quote Link to comment Share on other sites More sharing options...
wtdash Posted July 25, 2022 Share Posted July 25, 2022 (edited) The '90-'91 NON-turbos were 4.11 FD ratio for the Automatics; '92-'94 were all (including turbo) 3.90 FD ratio, so you 'll need to swap in the rear diff to match. You can swap in a '95-'98 EJ22 Auto trans from a Legacy Brighton L or LS (not the EJ25D-equipped OB, GT, LSI, SUS), and Impreza L, LX, OB sport (not the '98 EJ25D RS) as they're all 4.11, too. The '91 TCU 'should' run it as is. There's a possibility that if you change the TCU you might need the same year cruise control computer (by the passenger's footwell). FWIW, The '90-'94 non-turbo 5-speeds were all 4.11; '91-'94 SS/turbos were 3.90. Edited July 25, 2022 by wtdash Quote Link to comment Share on other sites More sharing options...
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