Matching transmissions to rear ends\differential.... 95\96

[jmickelct]

Finding conflicting info on matching trannies to rear differential (and how to even tell what rear end I have)..

 

My 1996 OBW 2.5\4EAT engine and tranny went south.... Looking for:

 

1. First choice 1995 EJ22\4EAT combo out of the same (crashed) car

2. 1995 EJ22 and 1996 4EAT from seperate cars...

 

Question still looms:

 

A. How do I know what my current rear differential ratio is? (is pulling the plug and counting "teeth" the only way? How many count for what ratio?

 

B. How will I know what rear end option #1 needs (4.1 or 4.44?)

 

Since they seem to be so cheap, even tempted to

 

- Try to find out what I have

- Pick up "the other", so I have both on hand...

 

Some folks claim

 

EJ2.5 automatics are all 4.44

manuals are 4.1

 

But that might diverge with 2.2....

 

I'm getting the impression that this might be a trial and error deal...

 

Opinions?

 

http://www.ultimatesubaru.org/forum/showthread.php?t=67201&highlight=rear+differential+4.1

[johnceggleston]

i went to car-part.com and searched for rear diffs for 2.5's manual and a/t and 2.2 manual and a/t legacy / outback. what i learned is below.(AND THIS IS NOT DEFINITE, DO YOUR OWN REASEARCH) and i'm working from memory, but i posted this in the last 2 months so a search would show what i knew, not what i remember.

 

'95 - '99

2,5's = outback's & gt's are 3.9 manual and 4.44 a/t

2.2's = legacy's 3.9 manual and 4.11 a/t

 

peoblems:

 

95 and 96 were transition years for the 2.5 engine / trans. so there is /was not enough information to assume that they matched the 97 -99 years. in other words, it is possible that 96 2.5 at had a 4.11. i don't know that they did but idon't know that they didn't. same for 95, only less so. did they even offer the 2.5 in 95??? by 97 the outback / gt was set at 2.5.

 

now for corrections:

i have been corrected before and i don't argue the point, but ... the trend seems to be what i have stated above.

 

the other thing to do is to compare the tranny numbers. tz102z2xxx is a 2.5 a/t (97 - early 99, maybe 96 to 99). tz102zAxxx is a 2.2 a/t.(in a 95 2.2L leg sedan. i swapped a 96 2.2 leg wagon a/t into the sedan with no problems so i assume that the 96 is an 'A' as well. i did some tranny number research last year and posted, more searching might confirm. try "tz102zaaaa")

 

i don't have or know part numbers for manual transmissions, sorry. when searching legacy rear "carrier"s (differentials) the first question they ask is 2.5 or 2.2. they then go to mnaual or a/t .

 

conclusions: (and this is a strech)

manuals are 3.9 and a/t's depend on the engine. (DO YOUR OWN RESEARCH)

 

 

get a tranny that matches your engine/tranny model and year!!!!! if not get the diff to go with it. especially if you are changing from 2.5 to 2,2.

 

when in doubt , call the dealer give them the vin and ask, for both the donor car and the receiving car. i recommend 2 dealers just ot be sure. some parts guys are not the sharpest knives in the drawer.

 

regarding gear ratios and teeth:

 

i also found a reference to the 4:44 ratio in the 96-99 2.5L a/t as 40 x9 teeth (40 ring gear and 9 pinion gear). if this is the case then the 4:11 ratio will have 37 teeth on the ring gear and 9 on the pinion; and the 3:9 will have 35 teeth on the ring gear and 9 on the pinion. any one know if this is acurate? and is it more or less work to swap a ring gear than a rear diff. ?? my guess is more. but knowlege is power, and more is better.

http://www.ultimatesubaru.org/forum/showpost.php?p=520095&postcount=9

 

good luck, john

 

PS i spotted a complete 91 legacy LS 2.2L sedan awd a/t abs today in a salvage yard, keys on the front seat. wrecked front, (bad front bumper grill, hood, etc. and dented left side all the way back.) last driven before something /03, inspection sticker was '03. your guess is as good as mine about the engine but the tranny might/should be good. miles were either 61k or 161k. if interested let me know, i'll double check and ask about it.

[jmickelct]

John,

 

Thanks, very much appreciated...

 

Will add the rearend to my wish list (esp. if I can find a 95 Legacy with a 2.2\4EAT) will try to grab the whole drive line... sounds\feels like this should give me a 4.11, so will give me some latitude when I try the swap.

 

I will definately be sticking with an automatic so will be spending the weekend (pending the impending ice storm that we are threatened with!), counting teeth! (and combing for wrecks...) .

 

-John

 

 

i went to car-part.com and searched for rear diffs for 2.5's manual and a/t and 2.2 manual and a/t legacy / outback. what i learned is below.(AND THIS IS NOT DEFINITE, DO YOUR OWN REASEARCH) and i'm working from memory, but i posted this in the last 2 months so a search would show what i knew, not what i remember.

 

'95 - '99

2,5's = outback's & gt's are 3.9 manual and 4.44 a/t

2.2's = legacy's 3.9 manual and 4.11 a/t

 

peoblems:

 

95 and 96 were transition years for the 2.5 engine / trans. so there is /was not enough information to assume that they matched the 97 -99 years. in other words, it is possible that 96 2.5 at had a 4.11. i don't know that they did but idon't know that they didn't. same for 95, only less so. did they even offer the 2.5 in 95??? by 97 the outback / gt was set at 2.5.

 

now for corrections:

i have been corrected before and i don't argue the point, but ... the trend seems to be what i have stated above.

 

the other thing to do is to compare the tranny numbers. tz102z2xxx is a 2.5 a/t (97 - early 99, maybe 96 to 99). tz102zAxxx is a 2.2 a/t.(in a 95 2.2L leg sedan. i swapped a 96 2.2 leg wagon a/t into the sedan with no problems so i assume that the 96 is an 'A' as well. i did some tranny number research last year and posted, more searching might confirm. try "tz102zaaaa")

 

i don't have or know part numbers for manual transmissions, sorry. when searching legacy rear "carrier"s (differentials) the first question they ask is 2.5 or 2.2. they then go to mnaual or a/t .

 

conclusions: (and this is a strech)

manuals are 3.9 and a/t's depend on the engine. (DO YOUR OWN RESEARCH)

 

 

get a tranny that matches your engine/tranny model and year!!!!! if not get the diff to go with it. especially if you are changing from 2.5 to 2,2.

 

when in doubt , call the dealer give them the vin and ask, for both the donor car and the receiving car. i recommend 2 dealers just ot be sure. some parts guys are not the sharpest knives in the drawer.

 

regarding gear ratios and teeth:

 

 

http://www.ultimatesubaru.org/forum/showpost.php?p=520095&postcount=9

 

good luck, john

 

PS i spotted a complete 91 legacy LS 2.2L sedan awd a/t abs today in a salvage yard, keys on the front seat. wrecked front, (bad front bumper grill, hood, etc. and dented left side all the way back.) last driven before something /03, inspection sticker was '03. your guess is as good as mine about the engine but the tranny might/should be good. miles were either 61k or 161k. if interested let me know, i'll double check and ask about it.