Making the Switch to a 4:1 Transfer Case

[srimes]

The other option is the 4.3:1 Atlas. I've run both the 241OR and Atlas. I prefer the Atlas because you can run the rig in 2wd low, which I actually use quite a bit

AND you can use the higher transmission gears in low range, making it NOT "useless for anything except rock crawling."

 

[Deep East TX LJ]

I can’t find it either. I’m sure most say 241J and 4:1 and some say 241OR and 4:1.

There are a few on EBay. At those prices you are in Atlas territory.

That's what I'm seeing as well. Thank you sir.

 

[JMT]

That's what I'm seeing as well. Thank you sir.

I found the post. Start here and read the next few posts.

https://wranglertjforum.com/threads...case-swap-into-non-rubicon-tj.2964/post-36656

 

[Deep East TX LJ]

I found the post. Start here and read the next few posts.

https://wranglertjforum.com/threads...case-swap-into-non-rubicon-tj.2964/post-36656

Very helpful! Thank you!!

 

[jjvw]

Very helpful! Thank you!!

If my memory is correct, you need to distinguish between the TJ and JK 241 cases. The TJ version has a speed sensor on the output, while the JK version does not. Which means if you install a JK 241, you need a different way to read a speedometer.

 

[Deep East TX LJ]

If my memory is correct, you need to distinguish between the TJ and JK 241 cases. The TJ version has a speed sensor on the output, while the JK version does not. Which means if you install a JK 241, you need a different way to read a speedometer.

Good to know. I found a NP241 from an '07 JK. I am trying to find out if I can make that work.

 

[Deep East TX LJ]

Update, I was able to source a 241J from an '04 Rubicon with a 5 speed. Now, I will go back through the threads to see what all I need to make it work. Thanks to everyone for the information.