2g auto transfer case

[foxracing4500]

having a hard time finding out but are all the transfer cases from 92-99 for the automatics the same?

I have a 99 btw and I hate seeing my car sit so I bought one used quickly off ebay, its 23 spline count, came from an automatic.

 

[abelebd]

No the 1g and 2g auto transfer cases have a different gear ratio, I made the mastake of running a 1g case in my 2g for a few thousand miles and it ended up breaking the gears in the center diff.

 

[Paul@RTM]

are all the transfer cases from 92-99 for the automatics the same

No. 95-96 are one style and 97-99 another style (they use slightly different gear ratios). Also, as abelbd mentioned 1g and 2g aren't the same. Also auto t-cases are different from manual t-cases (but I'm guessing you know that already).

 

[foxracing4500]

No. 95-96 are one style and 97-99 another style (they use slightly different gear ratios). Also, as abelbd mentioned 1g and 2g aren't the same. Also auto t-cases are different from manual t-cases (but I'm guessing you know that already).

well I guess I am risking it then from the one I am buying, most I can do is pull mine and look at both very closely but,

BrokenTSI
"Last I knew, 90-99 auto DSM's were all the same gear ratios, so any transfer case will match. And a 95 auto transmission is no different than a 99 auto transmission. Sounds like an install error to me. "

Source

if that is the case I guess thread solved?

EDIT: Found this on dsmtalk,
dsmtalk Automatic Transfer Case ID

 

[Paul@RTM]

I guess this could get complicated. I will admit, I don't know the ENTIRE story, but this is my understanding: 95-96 A/T t-case should be matched to a 95-96 A/T rear diff, but I'm not certain what the story is with the 95-96 A/T centre diff output. So I'm not sure if a 97-99 A/T tranny can be used with 95-96 A/T t-case/rear diff combo, but apparently the A/T t-case/rear diffs should travel as a pair. And the potential problem isn't the spline count, it's the resultant gear ratio(s). However, it's my understanding that even the tranny (or I guess the centre diff output) also should be matched to the t-case/rear diff.

Where did I get all my info? Various sources (mostly other DSM forums) over the last couple of years.

I guess someone like Shep or Jack's might know the answer, but I don't think they're really auto shops, right? Maybe IPT knows?

 

[foxracing4500]

I guess this could get complicated. I will admit, I don't know the ENTIRE story, but this is my understanding: 95-96 A/T t-case should be matched to a 95-96 A/T rear diff, but I'm not certain what the story is with the 95-96 A/T centre diff output. So I'm not sure if a 97-99 A/T tranny can be used with 95-96 A/T t-case/rear diff combo, but apparently the A/T t-case/rear diffs should travel as a pair. And the potential problem isn't the spline count, it's the resultant gear ratio(s). However, it's my understanding that even the tranny (or I guess the centre diff output) also should be matched to the t-case/rear diff.

Where did I get all my info? Various sources (mostly other DSM forums) over the last couple of years.

I guess someone like Shep or Jack's might know the answer, but I don't think they're really auto shops, right? Maybe IPT knows?

I feel like I am the only one who has ever ran in to this problem, but then again look at the recall advisory, some people just ended up getting a new one. To bad I couldn't flush it and take it to the shop but from what i read it was only up to 98's that were effected


alright I might be far in left field but 95-99 automatic transmissions are the same right? so spline count will be good.

looking at the 1g AWD auto and 2g AWD auto they have the rear diff ratio of 3.307. So just taking guesses here I guess they kept the rear the same, soo I got info on the Tcase I am purchasing its from a 95 awd auto with 85k miles. If the transmissions are the same and same with the ratio's I should be good right? I am feeling very newbish at the moment and I feel that I am wrong so some one shed some light.

You must be logged in to view this image or video.

 

[stracer107]

Ive been wondering the same as the op. From my research I THINK 92 to 96 auto t cases are the same 97 to 99 are different.

 

[Paul@RTM]

My brain's starting to hurt. There's a guy on my local board that knows a heck of a lot more about this than I do. He's had several auto drag DSMs and if anyone knows the ins and outs of this, he does. I'll bounce it off him. He might not answer right away, he's not on the board everyday, but often enough. It's got something to do with resultant gear ratios but I'm not sure of all the details. But WHY Mitsu would change these sorts of things is way over my head.

 

[bryanwheat]

I feel like I am the only one who has ever ran in to this problem, but then again look at the recall advisory, some people just ended up getting a new one. To bad I couldn't flush it and take it to the shop but from what i read it was only up to 98's that were effected


alright I might be far in left field but 95-99 automatic transmissions are the same right? so spline count will be good.

looking at the 1g AWD auto and 2g AWD auto they have the rear diff ratio of 3.307. So just taking guesses here I guess they kept the rear the same, soo I got info on the Tcase I am purchasing its from a 95 awd auto with 85k miles. If the transmissions are the same and same with the ratio's I should be good right? I am feeling very newbish at the moment and I feel that I am wrong so some one shed some light.

You must be logged in to view this image or video.

The rear end ratio is the same on all 2g's, BUT, the final drive in the transmission has a different ratio as well as the transfer case. You need to match the transfer case to the transmission. The spline count is the same, but the gear ratio of the transfer is different. The 90-96 use the same transfer case ratio, and the 97-99 are different.

 

[NHerron]

How about doing it the easy way since you have both t-cases.

Set them both side by side. Are they both the same spline count? Cool.
Now take a marker and mark one of the splines on each trasfer case, and a coresponding mark on the case of both input and output shafts. Lastly, rotate the shafts (whichever one you can turn by hand) and see if they are the same ratio. I know the tailshaft has a dust cover that can be tapped off but can't remember if it exposes the output shaft enough to grab with visegrips or some other plier. If no go there try finding a piece of flat stock metal and filing it until it fits the ID female splines of the input shaft and use that to grip and turn the shafts.

 

[bryanwheat]

How about doing it the easy way since you have both t-cases.

Set them both side by side. Are they both the same spline count? Cool.
Now take a marker and mark one of the splines on each trasfer case, and a coresponding mark on the case of both input and output shafts. Lastly, rotate the shafts (whichever one you can turn by hand) and see if they are the same ratio. I know the tailshaft has a dust cover that can be tapped off but can't remember if it exposes the output shaft enough to grab with visegrips or some other plier. If no go there try finding a piece of flat stock metal and filing it until it fits the ID female splines of the input shaft and use that to grip and turn the shafts.

You can also just split the case apart and count the teeth on them.

2g Transmission and Transfer Case Differences

2G a/b AWD drivetrain differences [Archive] - DSM Forums: Mitsubishi Eclipse, Plymouth Laser, and Eagle Talon Forum: DSMtalk.com

 

[Spyderman7]

I'm pretty sure all the transfer cases all have the same gear ratio .I have actually removed the guts from a 2 auto tc and put them in a 2g 5speed tc .Also The factory auto tc shaft/gears are much more beefier than the 5 speed ones (cheap upgrade) .open them up and you will see what i am talking about.Also shep told me they are all the same 1g,2g,manual,auto and all would use the same upgrade

 

[foxracing4500]

You can also just split the case apart and count the teeth on them.

2g Transmission and Transfer Case Differences

2G a/b AWD drivetrain differences [Archive] - DSM Forums: Mitsubishi Eclipse, Plymouth Laser, and Eagle Talon Forum: DSMtalk.com

I'm pretty sure all the transfer cases all have the same gear ratio .I have actually removed the guts from a 2 auto tc and put them in a 2g 5speed tc .Also The factory auto tc shaft/gears are much more beefier than the 5 speed ones (cheap upgrade) .open them up and you will see what i am talking about.Also shep told me they are all the same 1g,2g,manual,auto and all would use the same upgrade

so between 95-99 they are 4 different types of transfer cases between auto and M/T?

Spyderman7, shep said the Tcases have the same gear ratio but auto's are beefier?

idk but here are the few options,
for those who dont know my tcase plug is M.I.A. drove about 1/2 mile then parked it before i knew what was wrong, I could always flush it and fill it and hope for the best.

2. install the 95 auto Tcase and hope for the best

3. rebuild the 99 tcase

4. wait til someone sells a used Tcase from the desired year.

5. could try fighting with Stealership over leaking tcase recall.

 

[NHerron]

You miss posts 10 & 11?

 

[Spyderman7]

I personally have opened a auto transfer case and a 5 speed side by side and the auto is much beefier.And I assume it would hold a little more than the 5speed could ,but I've never done any testing to confirm this.

Shep said they have the same gear ratio,just different cases but when I read the other post (2G a/b AWD drivetrain differences) shep told someone in that post that the 97-99 are different so I did some more research and it def seems like 97-99 are different then the 91-96.

 

[foxracing4500]

i'll just wait to buy a used 97-99 auto transfer case and the waiting game begins.

Looking at the recall history on the eclipses can anyone confirm the 99 was exempt from the recall? I ended up putting fluid in it and close to the fill plug but up top it started leaking?

 

[1qkfwd]

Just to clear a few things up for those above that dont know.

1. The ring, pinion, and internal carrier are the same from 90-99 with the exception on the early year non lsd diffs that have a spider gear instead of the vicious.

2. The auto tcase hase the same ratio from 90-96

3. 96.5(97)-99 has different t-case ratio.

4. The only internal difference with the 2gb trans is the transfer gear and ring gear on the diff for the final drive. Thus the reasoning for using a different t-case.

5. You can use a 2g t-case on a 1g as long as the ratios right and it's a 23 spline t-case.

I've done a lot of part cross referencing through caps and comparing the t-cases in hand.

 

[Paul@RTM]

Yikes! This thread is the equivalent of looking at closeup shots of STD patients in a medical textbook. If I ever get the urge to convert to A/T, I'll either find a medical textbook with lots of pics or I'll look for this thread! Either way, I hope the urge to convert passes. My point is, it seems bastardly complicated if trying to mix/match parts. 'Course everyone knows conversions are easier if one has access to an entire donor vehicle, but yes, I realize there are no donor vehicle fairies that leave donor vehicles under your pillow while you sleep.

 

[1qkfwd]

You should see the notes I keep on all my dsm stuff. It's more of a hobby tracking down the differences between years and models. I've got all the rear diff codes compiled and even a lot of ecu coding. Not to mention all the compatible stuff off evos.

 

[pauleyman]

I was curious about the statment that auto tcases are somehow stronger as far as gears go. Ratio differences aside from 97 up the part numbers are the same for 5spd or manual for respective year for all years 1g and 2g so how can this statement be made?

 

[1qkfwd]

I was curious about the statment that auto tcases are somehow stronger as far as gears go. Ratio differences aside from 97 up the part numbers are the same for 5spd or manual for respective year for all years 1g and 2g so how can this statement be made?

Not sure what your asking exactly???

 

[pauleyman]

I'm pretty sure all the transfer cases all have the same gear ratio .I have actually removed the guts from a 2 auto tc and put them in a 2g 5speed tc .Also The factory auto tc shaft/gears are much more beefier than the 5 speed ones (cheap upgrade) .open them up and you will see what i am talking about.Also shep told me they are all the same 1g,2g,manual,auto and all would use the same upgrade

How is this statment true when the gear part numbers are the same? The only part number change is when the ratios changed in 97 and even then auto and manual share the same part numbers. Only the case is different and of course the input sleeve on early models.

 

[Spyderman7]

I thought about it and I am wrong!!! .When i had compared the two, the auto was actually out of a 97 gsx and the manual was out of a 95 I should of realized that before I made the post

Sorry about that guys.