Post by pearldragonz on Feb 26, 2020 14:51:20 GMT -5
I recently upgraded a newer T-case with the 4.24 gear kit for my 1990 Geo Tracker. I knew that my original case couldn't be used because the gear kit won't fit into an 89-90 T-case, so I kept searching until I found a mystery frame from a Suzuki Sidekick for $100 that still had everything on it minus the body and engine. I was able to identify that it was a 1991 or later so I grabbed the T-case for my build. I had previously searched for a newer T-case online and just about all of them were listed as 89-98 regardless of what year rig they came out of. I could easily see someone buying a T-case then discovering the hard way that they couldn't upgrade it. That made me wonder how to identify the difference between an 89-90 VS a 91-98 T-case. I searched the internet and found nothing on T-case identification in these years. A couple days ago I pulled my original T-case getting ready for the swap and decided that while I had both cases removed I would figure out how to visually tell the difference between the two. I found 3 easily identifiable differences between the two.
First: The flange around the 89-90 input shaft goes into the case about 1/2" deeper than the 91-98
Second: The big groove under the speedo flange goes all the way under the flange on the 89-90 while it stops about an inch short on the 91-98
Third: Right next to the output shaft there is a long flat area under the shift handle. On the 89-90 it is completly smooth. On the 91-98 is has a small hump right in the middle.
I made a Youtube video that shows the diffrence that you can view with this link: www.youtube.com/watch?v=76ToxWa60oY
I have a few other Trackick videos on my channel as well.
I may also need some clarification here though. From what I understand there is no difference between the manual transmission T-cases and the automatic transmission T-cases. A lot of sellers advertise that there is a difference and often sell the MT cases at a premium. Also I have heard that around 96-97 the output shaft splines may have changed. Is this true and is it a simple swap of newer drivelines to put one of these into an older Trackick?
First: The flange around the 89-90 input shaft goes into the case about 1/2" deeper than the 91-98
Second: The big groove under the speedo flange goes all the way under the flange on the 89-90 while it stops about an inch short on the 91-98
Third: Right next to the output shaft there is a long flat area under the shift handle. On the 89-90 it is completly smooth. On the 91-98 is has a small hump right in the middle.
I made a Youtube video that shows the diffrence that you can view with this link: www.youtube.com/watch?v=76ToxWa60oY
I have a few other Trackick videos on my channel as well.
I may also need some clarification here though. From what I understand there is no difference between the manual transmission T-cases and the automatic transmission T-cases. A lot of sellers advertise that there is a difference and often sell the MT cases at a premium. Also I have heard that around 96-97 the output shaft splines may have changed. Is this true and is it a simple swap of newer drivelines to put one of these into an older Trackick?