Topic: Swapping in rubicon case?

[stan98tj]

I have the 3spd auto. Anyone know of swapping in a rubicon 241 is at all possible? Would it be more or less direct swap or would there be any difficult wiring?

[stan98tj]

Talked to Advanced Adaptors today and sounds like the Rubi case is direct bolt in with my transmission. I'll need a new driveshaft.

[VA_YJ]

The 241OR is larger than the 231J.  If you have a 1" or more body lift, no problem.  Otherwise you might need to "adjust" your floor panel for clearance with a 5 lb sheet metal adjustment tool.

Another possible concern is that the Rubicons have a 4.0 which has the 23 spline transmission output. The 2.5 liter 5 speeds use a 21 spline output.  You need to make sure your three speed transmission has the 23 spline output - pretty sure it does.

[VA_YJ]

The guys at AA are the experts, but I did a quick double check.  You should have a 23 spline transmission output.  You may need an extended seal to keep the juice in the slush box.  AA should be able to tell you.

30rh - 1997-2002
3 speed automatic
23 spline output
Ratios:
1st - 2.74
2nd - 1.54
3rd - 1.00
Rev - 2.20

[stan98tj]

The guys at AA are the experts, but I did a quick double check.  You should have a 23 spline transmission output.  You may need an extended seal to keep the juice in the slush box.  AA should be able to tell you.

30rh - 1997-2002
3 speed automatic
23 spline output
Ratios:
1st - 2.74
2nd - 1.54
3rd - 1.00
Rev - 2.20

Yeah ill confirm with them right before i purchase. But i think this will work out well. Pretty excited to see how that 4:1 will turn out. I have a 1" BL now.

[VA_YJ]

You'll have a 50:1 crawl ratio in first gear with an automatic.  Should work very well on rough trails.

[jagular7]

It'll bolt right up to trans, even the shifter mechanism will bolt up stock. For the rear ds, check out your extended local CL. I see them from time to time on my semi-local CL. However, be best to get a cv yoke and put a cv joint on the output of the rear ds. Check out rubicon owners forum for what they've experienced. Enjoy the crawl.

I just picked up a tera low with SYE 231 case for my 97 2.5l/auto....yes, 23 spline output.

[stan98tj]

It'll bolt right up to trans, even the shifter mechanism will bolt up stock. For the rear ds, check out your extended local CL. I see them from time to time on my semi-local CL. However, be best to get a cv yoke and put a cv joint on the output of the rear ds. Check out rubicon owners forum for what they've experienced. Enjoy the crawl.

I just picked up a tera low with SYE 231 case for my 97 2.5l/auto....yes, 23 spline output.

what gears/tires are your running with that auto? Im 4.56 with my 33s and i'd like to move up to 35s. I did the grimjeeper chart and it seemed fine. Haven't been able to see any real world reports though.