Transfer Case Choice - JKowners.com : Jeep Wrangler JK Forum
View Poll Results: Which Transfer Case?
Stock Rubicon case 6 25.00%
Atlas 2 speed 12 50.00%
Wait for the Advance Adapter Rubicrawler 6 25.00%
Voters: 24. You may not vote on this poll

 
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post #1 of 17 Old 09-09-2008, 03:26 PM Thread Starter
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Transfer Case Choice

OK guys, need some input here. Which would you go with to increase the crawl ratio? Right now I'm running 33's with 4.10's with an auto.

/jl

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Last edited by John L; 09-09-2008 at 03:30 PM.
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post #2 of 17 Old 09-09-2008, 03:41 PM
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I figured, "What the hell," and went with the Atlas 4 spd 1.0 -2.0 -2.77 -5.44. I figured that setup would give me the best of most worlds. It wasn't listed on the poll, but what the hell. Got a call yesterday and the build is supposed to start today. Should be lookin' at it in about ten days or so.

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post #3 of 17 Old 09-09-2008, 03:49 PM
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If money is no object I'd go 4speed atlas all the way.

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post #4 of 17 Old 09-09-2008, 03:51 PM
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I may be incorrect about this, but I think the Rubicrawler requires the stock Rubicon transfer case. In that case it wouldn't make the options mutually exclusive.

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post #5 of 17 Old 09-09-2008, 04:09 PM
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Quote:
Originally Posted by tgrt View Post
I may be incorrect about this, but I think the Rubicrawler requires the stock Rubicon transfer case. In that case it wouldn't make the options mutually exclusive.
I remember seeing the same thing, but now I'm getting the impression they'll go on any JK. I kind of wonder if the feedback was so strong from non-Rubi owners when it was first discussed that they made some slight mods to make it universal.

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post #6 of 17 Old 09-09-2008, 04:17 PM Thread Starter
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Quote:
Originally Posted by tgrt View Post
I may be incorrect about this, but I think the Rubicrawler requires the stock Rubicon transfer case. In that case it wouldn't make the options mutually exclusive.
Quote:
Originally Posted by seer View Post
I remember seeing the same thing, but now I'm getting the impression they'll go on any JK. I kind of wonder if the feedback was so strong from non-Rubi owners when it was first discussed that they made some slight mods to make it universal.
From the limited info I've dug up, it will bolt between the 42RLE and either case. There's nothing to indicate this is a Rubicon only application.

Now, from the standpoint that the ruby and non-ruby cases bolt up different or have different spline counts and/or shaft diameters, will the ruby case bolt up in my X OK? I'm really leaning toward the Rubicrawler, but ease of install will certainly come into play here.

/jl

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post #7 of 17 Old 09-09-2008, 04:21 PM
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You can bolt the rubi case in any 4wd JK. Also, I don't recall seeing the rubicrawler was rubicon specific, considering it replaces the tail housing on the transmission I don't see how it would matter if you have an X or a rubicon.

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post #8 of 17 Old 09-09-2008, 04:25 PM Thread Starter
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OK, I just got off the phone with AA, and was told the Rubicrawler will bolt up to both case variants of the JK
It will be cable shifted, and they hope to have a prototype out at the SEMA show in November. Price it still being discussed, I was told it will be cheaper than an Atlas case.

/jl

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post #9 of 17 Old 09-09-2008, 04:26 PM
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It makes me wish I actually had an auto....

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post #10 of 17 Old 09-09-2008, 04:40 PM
 
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The Rubicrawler is def on my list, but I think a 2 speed 5:1 it gunna go in first and if its not low enough I would bolt the Rubicrawler in front of it. thats the plan at least.
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post #11 of 17 Old 09-09-2008, 05:49 PM
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I vote for the Rubicrawler because that's what my plan is. If that isn't geared low enough, then I'll start looking at the Atlas 2 speed.
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post #12 of 17 Old 09-09-2008, 06:52 PM
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What reduction is available in the aa planetary box? It would work awesome if it was 2.72:1 with a 4:1 rubicon case.

I would not be as excited if the case and the reduction box had the same ratio.

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post #13 of 17 Old 09-09-2008, 09:06 PM
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I wonder if everything in our drivetrain will be able to handle the torque that the Rubicrawler will put out.

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post #14 of 17 Old 09-09-2008, 09:33 PM
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I did the Atlas 4spd and LOVE it. I use the 4.3 most by far but have dropped the 10.2 in a few times and it was nice to have.

2007 JK, 4.5" RE LA kit, ATLAS4spd, ARB rear w/ Superiors, Rubi front w/RCV axles, 5.38's, 40" KM2's, 18x10 Raceline Beadlocks, 1"BL, Poly Rockers, RR corners, PS fenders, etc...the list goes on.
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post #15 of 17 Old 09-14-2008, 06:49 PM
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The Rubicrawler is a 2.72/1 low range & 1/1 high range.

It will bolt into 03-06 TJs (42RLE equipped) with the 231 or 241 (rock-trac)
&
the 07+ (42RLE equipped) Jks 2 & 4 door
With either the 2.72/1 or the 4.0/1 factory t-case

Shouldn't require D/S mods as it replaces the factory tail housing.
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post #16 of 17 Old 09-16-2008, 06:23 AM
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Quote:
Originally Posted by ASTAR View Post
I did the Atlas 4spd and LOVE it. I use the 4.3 most by far but have dropped the 10.2 in a few times and it was nice to have.
If I were swapping out the t-case, then a 4 speed would be the best choice in my view, the extra ratios can be real useful at times.

Otherwise I'd go with the RubiCrawler, depending on price. For less than a $1k it would be great value, for $1500 or so, a t-case swap would start to look more attractive.
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post #17 of 17 Old 10-10-2008, 07:27 AM
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Quote:
Originally Posted by crusty1007 View Post
The Rubicrawler is a 2.72/1 low range & 1/1 high range.

It will bolt into 03-06 TJs (42RLE equipped) with the 231 or 241 (rock-trac)
&
the 07+ (42RLE equipped) Jks 2 & 4 door
With either the 2.72/1 or the 4.0/1 factory t-case

Shouldn't require D/S mods as it replaces the factory tail housing.
Is it possible to connect one of these to a 545rfe? It would seem to have the same rear flange and spline count as the 42RLE (do not quote me on that though)

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