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Old 08-10-2010, 07:34 PM   #1
Christianl
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Default Transmission Swap (95 Legacy to 96 Legacy)

I have a torque converter and 2nd gear that's dying on my 95 Subaru Legacy LSI Wagon. I managed to find a MY-96 Legacy 2.5GT sedan full transmission with 5000km. My question is if it'll fit directly? Where can I find the information and such? Please help?
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Old 08-10-2010, 08:49 PM   #2
mike-tracy
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No, the 96 GT had a 4.44 final drive, and your 95 LSI had 4.11, and the TCU's are different.
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Old 08-10-2010, 10:30 PM   #3
kirbykirb
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Yes it will fit, if you can try to get the rear Diff from the 96'. you don't need it but it will increase performance.

It will fit directly, you'll have to remove the bolts that hold the torque converter in place to the engine flex plate, and then the the exhaust has to come off. from headers to muffler. After that you'll remove the driveshaft and then its simple. Remove the dogbone that holts the transmission to the cars chassis, then 4 bolts that hold it to the engine (starter bolt, passanger side bolt and two nuts on the bottom) after that, you undo the harness connectors, and the shifter (which has a little pin; DO NOT LOOSE IT.) Then undo the CV joints and it will fall out
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Old 08-11-2010, 05:33 AM   #4
mike-tracy
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Quote:
Originally Posted by kirbykirb View Post
Yes it will fit, if you can try to get the rear Diff from the 96'. you don't need it but it will increase performance.
Incorrect, you cannot run this way, unless you have the FWD fuse in. You will literally overheat your tranny as it constantly tries to compensate for a difference in load front to rear.

2ndly, have you checked the service manual for his 95 LSI to see if the wiring harness is the same? 95 was a transitional year with all kinds of odd parts ranging from OBD-I to OBD-II to hybrid wiring for the compared to 96+. Does his tranny have the older or newer style connectors? Etc.
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Old 08-11-2010, 04:45 PM   #5
kirbykirb
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Quote:
Originally Posted by mike-tracy View Post
Incorrect, you cannot run this way, unless you have the FWD fuse in. You will literally overheat your tranny as it constantly tries to compensate for a difference in load front to rear.

2ndly, have you checked the service manual for his 95 LSI to see if the wiring harness is the same? 95 was a transitional year with all kinds of odd parts ranging from OBD-I to OBD-II to hybrid wiring for the compared to 96+. Does his tranny have the older or newer style connectors? Etc.
Hmmm so it will overheat... no idea about that. I thought it would just be a mismatched final drive that would give off decreased performance; not that it would ultimately destroy the transmission.

As for the service manual; I've done the swap before with a friend of mine but we had the diff as well cause it was included free so we elected to change everything out to make things much more simple and it was direct bolt in. 95 was a change year; but considering how the JDM 2nd gen legacy was in production before the USDM side alot did carry over.
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Old 08-13-2010, 09:43 PM   #6
Jonathan
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Quote:
Originally Posted by kirbykirb View Post
Hmmm... so it will overheat... No idea about that. I thought it would just be a mismatched final drive that would give off decreased performance; not that it would ultimately destroy the transmission.
Kirby -

In an all wheel drive Subaru the Final Drive gear ratio exists both in the rear differential and in the "transaxle" that drives the front wheels and is part of the transmission. If the front and rear axles are operating with different final drive gear ratios the transmission is in effect having to attempt to compensate for this difference which it reads as "wheel slippage". While the transmission is designed to do this for a limited traction situation, it isn't capable of doing so continuously.
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