32RH swap thread that isn't 5 years old but will be by the time I get done

hosejockey61

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I recently just picked up a 32RH out of a '98 TJ from the pick and pull. The Jeep looked like a project for someone and it ended up here. When I got to the junkyard, the motor, t-case, grill, hood, seats, PCM, and other stuff were already gone. It had only been on the lot for 1 day. I get there and take a look and get pissed off.

Then I look in the rear seat area and low and behold there sits the transmission already pulled. Looks like it's covered in oil. The torque convertor is there but the flex plate is missing. The dipstick and dipstick tube were pulled, but sitting right next to it. I look near the center console and the shifter is still there along with the two cables attached. I grab those too along with the brake pedal. I was thinking I needed the wiring harness and come to find out I don't as mine should have all the connections already. Good thing as that harness had already been chopped up. Great parts to start for my swap.

I know that a few people in here have done the swap and I will most likely lean on them for info. It looks very straightforward. I'm still trying decide whether it would be wise to rebuild it and make sure it's a good transmission or just send it and see what happens. At the very least, it looks like I'll need a deep pan anyway so I can at least get a little peek inside.

My very limited initial research shows that an extended seal was needed to mate the t-case. The Teraflex was a popular option back in the day but is now discontinued. I can't even find a picture of it so I can find a suitable replacement. In addition, it will be mated to a 241 instead of the 231. IIRC the 241 had a slightly shorter input shaft than the 231, so I'm not sure if it needs more extension than the original.

Does anyone have a picture of the extended seal so I can compare or know of a suitable replacement to the Teraflex seal?

I forgot to take a pic of the transmission but here is a pic of somebody who opted to take the badges of honor instead of the transmission. And for that, I thank them!

PXL_20231215_161943725.jpg
 
Nice find on the trans! I love my 32rh. I didn’t do the swap but I have rebuilt one and it wasn't too bad. I documented most of it here https://wranglertjforum.com/threads/32rh-transmission-rebuild.59697/

And another one here from @hear
https://wranglertjforum.com/threads/rebuilding-my-32rh-transmission-fully-successfully.63098/

With that said the 32rh is known to be pretty damn tough and the one you found is likely in good shape. Pull the pan, check the magnet for any debris and take a look at the filter for any large debris. If you aren't sure just post a pic of each and we might be able to help out.

Things you definitely want to do even if everything checks out....
1. Vent hole relocation
2. Adjustment of both bands
3. Filter replacement
4. Deep pan
5. Trans cooler

Good luck with your conversion!
 
Nice find on the trans! I love my 32rh. I didn’t do the swap but I have rebuilt one and it wasn't too bad. I documented most of it here https://wranglertjforum.com/threads/32rh-transmission-rebuild.59697/

And another one here from @hear
https://wranglertjforum.com/threads/rebuilding-my-32rh-transmission-fully-successfully.63098/

With that said the 32rh is known to be pretty damn tough and the one you found is likely in good shape. Pull the pan, check the magnet for any debris and take a look at the filter for any large debris. If you aren't sure just post a pic of each and we might be able to help out.

Things you definitely want to do even if everything checks out....
1. Vent hole relocation
2. Adjustment of both bands
3. Filter replacement
4. Deep pan
5. Trans cooler

Good luck with your conversion!

I read through his thread and yours is up next. It'll be awhile before I actually do this as I have plenty of other irons in the fire right now. But at least I got it. Thanks for the links.
 
I love working on the 32RH. I hate pulling it out, and I hate putting it back in, and I hate screwing around with the dipstick because it never seems to seal back up, but other than that I love them. You may have not shared on purpose, but what does an oily transmission sitting the back of a TJ go for these days? I'm about to pick up one for $200.
 
I love working on the 32RH. I hate pulling it out, and I hate putting it back in, and I hate screwing around with the dipstick because it never seems to seal back up, but other than that I love them. You may have not shared on purpose, but what does an oily transmission sitting the back of a TJ go for these days? I'm about to pick up one for $200.

$150
 
Sounds like a fun swap, at times I wish ours was an auto. Like when the wife complains “this is too much work, as she’s pulling out of the Starbucks dive-thru with a latte in hand”.

If you need an extra set of hands reach out.
 
Here's the same extended rear seal I installed into my 32RH. It's aluminum and needs a BFH to pound it into the rear of the 32RH. I protected it with a piece of scrap aluminum while seating it.

https://jjs4wd.com/teraflex-automat...r-yj-and-tj-with-low-231-hd-transfercase.html

Just to clarify for those that may not know about this seal..my understanding is it makes it possible to NOT have to swap the input gear when doing a manual to auto conversion. It does this by sealing a new area on the existing gear. Is this correct?
 
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I recently just picked up a 32RH out of a '98 TJ from the pick and pull. The Jeep looked like a project for someone and it ended up here. When I got to the junkyard, the motor, t-case, grill, hood, seats, PCM, and other stuff were already gone. It had only been on the lot for 1 day. I get there and take a look and get pissed off.

Then I look in the rear seat area and low and behold there sits the transmission already pulled. Looks like it's covered in oil. The torque convertor is there but the flex plate is missing. The dipstick and dipstick tube were pulled, but sitting right next to it. I look near the center console and the shifter is still there along with the two cables attached. I grab those too along with the brake pedal. I was thinking I needed the wiring harness and come to find out I don't as mine should have all the connections already. Good thing as that harness had already been chopped up. Great parts to start for my swap.

I know that a few people in here have done the swap and I will most likely lean on them for info. It looks very straightforward. I'm still trying decide whether it would be wise to rebuild it and make sure it's a good transmission or just send it and see what happens. At the very least, it looks like I'll need a deep pan anyway so I can at least get a little peek inside.

My very limited initial research shows that an extended seal was needed to mate the t-case. The Teraflex was a popular option back in the day but is now discontinued. I can't even find a picture of it so I can find a suitable replacement. In addition, it will be mated to a 241 instead of the 231. IIRC the 241 had a slightly shorter input shaft than the 231, so I'm not sure if it needs more extension than the original.

Does anyone have a picture of the extended seal so I can compare or know of a suitable replacement to the Teraflex seal?

I forgot to take a pic of the transmission but here is a pic of somebody who opted to take the badges of honor instead of the transmission. And for that, I thank them!

View attachment 483774

I have an extended seal housing if you need it. The most important part of the harness to snag is the short jumper harness that goes from the manual reverse light plug to the reverse light switch on the transmission.
 
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Just to clarify for those that may not know about this seal..my understanding is it makes it possible to NOT have to swap the input gear when doing a manual to auto conversion. It does this by sealing a new area on the existing gear. Is this correct?
The transfer case's input shaft is too short to seal the 32RH when it was configured for a manual transmission. It's not long enough to reach inside and seal the 32RH's output shaft seal opening. The extended seal in that link moves the 32RH's output shaft seal further out so it can seal against the transfer case's too short input shaft.
 
Just to clarify for those that may not know about this seal..my understanding is it makes it possible to NOT have to swap the input gear when doing a manual to auto conversion. It does this by sealing a new area on the existing gear. Is this correct?

Correct.
 
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The transfer case's input shaft is too short to seal the 32RH when it was configured for a manual transmission. It's not long enough to reach inside and seal the 32RH's output shaft seal opening. The extended seal in that link moves the 32RH's output shaft seal further out so it can seal against the transfer case's too short input shaft.

I'm guessing that there is no difference between the 231 and 241 that makes a difference? I'm sure @mrblaine has done this before and probably more than once. My unknown is if the 241 to 32RH vs. the 231 to 32RH. In my mind I want to remember the output shaft of the 241 was shorter by like an inch. I thought I remembered that from my swap to my NV3550 but that it really wasn't an issue (and hasn't been).
 
I'm not sure about 241 vs 231 lengths, but the 32RH for sure needs the long input gear with a 231. Some of the 1999 (and maybe 1998? Not sure) NP231s came with long inputs despite being mated to auto or manual. The manual can accept either short or long, the auto needs long to seal. I think you have or had a 1999? If so, you should have the long input and you can compare where the seal rides on that to where it will ride on the slightly shorter 241 input and see if it will work.