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Old 01-18-2006, 06:38 PM   #1
pcmx
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Default 99 Legacy Transmission Swap

My apologies if this is in a FAQ somewhere, I couldn't find it.

I have a 99 Legacy L (2.2l) Anniversary Edition, AT, 70k miles, transmission is going. I'm looking at just swapping a used trans because of cost. What subie transmissions will interchange with this model year? Will a trans from a 2.5l car work? I'm actually thinking about driving to the east coast this weekend to pick one up if it will work, from Iowa. Pretty important to get it right the first time.

Thanks,
Sean
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Last edited by pcmx; 01-18-2006 at 07:02 PM.
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Old 01-18-2006, 07:14 PM   #2
RoundtheBend
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the transmission from any EJ2xx should fit.
As far as working with your existing wiring / TCU, I'm sorry but I don't know anything about auto transmissions except that I had one before my 6-speed swap. I would think that any similar year (maybe even BE/BH) legacy tranny with matching gear ratios would work for you.

Hopefully someone steps up that has more knowledge about autos than me. Good luck!

-Erik
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Old 01-18-2006, 07:18 PM   #3
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Don't think for a minute that dropping an STI drivetrain in hasn't crossed my mind! For now though, I need to keep it running on the cheap. I think the wiring/TCU question is the main issue. It looks like most transmissions would bolt up. I would like to drop one in without tons of wiring.
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Old 01-18-2006, 08:17 PM   #4
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Don’t have too much in the way of specifics to add, but might be able to point you in the right direction.

1. Ensure the gear ratios are the same with 4EATs across the 2.2L and 2.5GT platforms (probably are but you should verify).

2. Also, I believe 99 was the last year of that gen of 4EAT. In 2000 I believe the Legacy’s got the next generation 4EAT with viscious coupling center diff instead of clutch-discs, therefore BE/BH would likely not work, at least for direct swap-in...

Good luck…
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Old 01-18-2006, 08:49 PM   #5
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Quote:
Originally Posted by xcntrk75
Don’t have too much in the way of specifics to add, but might be able to point you in the right direction.

1. Ensure the gear ratios are the same with 4EATs across the 2.2L and 2.5GT platforms (probably are but you should verify).

2. Also, I believe 99 was the last year of that gen of 4EAT. In 2000 I believe the Legacy’s got the next generation 4EAT with viscious coupling center diff instead of clutch-discs, therefore BE/BH would likely not work, at least for direct swap-in...

Good luck…
The transmission has to be from a 1999 or newer. The legacy's went to the phase 2 engine / transmission in 1999 whether or not it was a 2.2 or 2.5. A transmission from a 2.5l will work just fine, As long as it is a 1999 or newer. The easiest way to tell the 1999 and newer transmissions apart from the pre-1999 transmissions is 1999+ have 8 bell housing bolts and an external spin on filter on the side of the transmission. The Pre 1999's have only 4 bell housing bolts and no spin on filter.

They changed quite a bit on the inside of the transmission. They changed the position of the main drum speed sensor, and added an input shaft speed sensor. The shift solenoids are all different. The whole electronic system is basically completely redesigned with the 1999 and newer transmissions. If your car has the spin on filter (Drivers side of the car, right behind the front differential mounted on the same side of the transmission as the drain plug) then you've got the new transmission. If you want pictures showing you what I'm talking about, then I'll be more than happy to take them for you.

I believe that the Legacy GT's have a 4.44 final drive, so without a little bit of work, they wouldn't work (you'd have to swap the front differential and pinion shaft). Your transmission should have a final drive ratio of 4.11 so any non outback, non gt 1999-2004 legacy transmission should work just fine for you.

If you get a transmission with a matching rear diff, then it doesn't matter what final drive ratio you get. You'll just swap rear diffs to match the transmission.


PS. Erik, I've got a 4.44 Rear diff if you want to sell your FXT Transmission that I've got lying on the floor.
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Old 01-18-2006, 09:49 PM   #6
pcmx
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Any way to tell by the numbers?
My trans is TZ1A2ZAEAA-WX with spin-on filter
Donor is TZ1A2ZJEBA-WZ with spin-on filter supposedly from a 99 2.5 Outback

I'm guessing not, because it's an Outback?
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Old 01-18-2006, 10:32 PM   #7
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I'll let you know tomorrow on the numbers. That should give me all of the information that I need.
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Old 01-20-2006, 01:32 AM   #8
RoundtheBend
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Mike, I still need to start that FS thread. I've got more random legacy interior pieces than I know what to do with.
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Old 01-20-2006, 11:57 AM   #9
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The transmission you're looking at installing has a final drive ratio of 4.44. From my talks with my friend at a local dealer yesterday, I found out that Anything with a 2.5 and an Automatic has a 4.44 Final drive, and everything with a 2.2 has a 4.11 Final Drive (At least in 1999)

Transmission number matched to a 1999 Outback. If you want to change the rear diff, then you can use this outback transmission. I've got a 4.44 rear diff if you end up going with the outback Transmission. It will just bolt straight into your car. It came from a 1996 Legacy GT that we did a complete drivetrain swap on (1995 WRX RA with DCCD)
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Old 01-20-2006, 03:07 PM   #10
pcmx
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Thanks for checking. I actually found another transmission that is from a 2.2l car with less miles on it (<30k). It's in North Dakota which is close enough that shipping will be affordable.

I appreciate all the input. Thanks.
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Old 12-14-2014, 03:07 AM   #11
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Default 99 Subaru legacy Transmission compatibility

I have a 99 2.2 manual what transmissions are compatible with this model legacy
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