DISCUSS: Atlas4 : Special JK 2.0: Ratio Build (#Atlas-4sp-JK20)
02-03-2014, 11:40 AM
#1
JK Freak
Thread Starter
DISCUSS: Atlas4 : Special JK 2.0: Ratio Build (#Atlas-4sp-JK20)
Looks like Advanced came out with a new Atlas with special pricing for the JK.
Here's a link.... please discuss what you think about it. Pricing is about 3100 list.
Here's a link.... please discuss what you think about it. Pricing is about 3100 list.
Atlas 4 Speed Transfer Case- JK 2.0:1 Special
Atlas 4 Speed Transfer Case:
This custom pre configuration is for Jeep Wrangler JK's. This configuration works with 2007 to current JK Wranglers equipped with manual transmissions & 2007 to 2011 JK Wrangler equipped with automatic transmissions. This configuration will provide the follow gear ratio options:
1:1
2.0:1
2.72:1
5.44:1
This pre configuration includes:
Atlas 4 Speed Transfer Case
Choice of Yokes
Cable Shifter Kit
Electronic Control Module
Atlas 4 Speed Transfer Case:
This custom pre configuration is for Jeep Wrangler JK's. This configuration works with 2007 to current JK Wranglers equipped with manual transmissions & 2007 to 2011 JK Wrangler equipped with automatic transmissions. This configuration will provide the follow gear ratio options:
1:1
2.0:1
2.72:1
5.44:1
This pre configuration includes:
Atlas 4 Speed Transfer Case
Choice of Yokes
Cable Shifter Kit
Electronic Control Module
02-03-2014, 12:04 PM
#2
JK Enthusiast
Join Date: Sep 2013
Location: Pioneer, CA
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Seems kind of odd to me. Do I need two ratios close together in the np205/np231 range, and a super low well beyond the Rubi case?
I can't imagine a situation where I'm going to want a multi speed T-case. But then I can manually shift my 5speed auto, so I can run 5th gear in 4 lo to get a little speed. Maybe that's what it's about, 4 speed slush box guys? Even so, seems unnecessary.
Unless you have a reason to row gears in your t-case?
I can't imagine a situation where I'm going to want a multi speed T-case. But then I can manually shift my 5speed auto, so I can run 5th gear in 4 lo to get a little speed. Maybe that's what it's about, 4 speed slush box guys? Even so, seems unnecessary.
Unless you have a reason to row gears in your t-case?
02-03-2014, 12:28 PM
#3
JK Freak
Thread Starter
The 4:1 isn't always optimal... a 2ish range is very nice to have for higher speed wheeling. Then you have the ability to disconnect, which is the primary reason for going with one of these boxes.
I posed the question because this case is a bit less than their standard four speed and was wondering what folks thought about it's configuration. I'll be getting a new t-case soon.... just weighing out the options.
I posed the question because this case is a bit less than their standard four speed and was wondering what folks thought about it's configuration. I'll be getting a new t-case soon.... just weighing out the options.
02-03-2014, 04:12 PM
#4
JK Jedi
Thats what I paid for my 3.8 4 speed. Not sure why I would want a 2.0 unless I had an high hp motor and then why not just use 2.72? I guess more choices is a good thing and someone might want to run this that races or something.
02-20-2014, 08:32 AM
#5
JK Jedi
The 4:1 isn't always optimal... a 2ish range is very nice to have for higher speed wheeling. Then you have the ability to disconnect, which is the primary reason for going with one of these boxes.
I posed the question because this case is a bit less than their standard four speed and was wondering what folks thought about it's configuration. I'll be getting a new t-case soon.... just weighing out the options.
I posed the question because this case is a bit less than their standard four speed and was wondering what folks thought about it's configuration. I'll be getting a new t-case soon.... just weighing out the options.
02-20-2014, 09:09 AM
#6
Forum Tech Advisor
Ability to do a front dig 
Ability do to desert in 2.0:1
Ability to do sand or snow in 2.72:1
For rock crawling, 5.44:1 may be more than would be needed for a 6 speed, but it would be helpful with a 42RLE automatic.
With 5.38 gears, the crawl ratio for a 07-11 6 speed with the 4.46:1 first gear and the 4:1 Rubi transfer case is 96:1. With 5.44:1, the ratio would be 130:1--too low for many people, and 2nd gear would only be 77:1. I really like my 96:1 in my Rubi 6 speed. Maybe on a few of the obstacles on Arrowhead in Sand Hollow I'd appreciate 130:1--or if I had 44s instead of 40s.
With 5.38 gears, the crawl ratio for a 42RLE with the 2.84:1 first gear and the 4:1 Rubi TC is 61:1. With the 42RLE and 5.44:1 would be 83:1.
I recall DesertDog saying that the something like 160:1 using a RubiCrawler was too much torque and twisted axle shafts like pretzels before he knew what had happened.
Ability do to desert in 2.0:1
Ability to do sand or snow in 2.72:1
For rock crawling, 5.44:1 may be more than would be needed for a 6 speed, but it would be helpful with a 42RLE automatic.
With 5.38 gears, the crawl ratio for a 07-11 6 speed with the 4.46:1 first gear and the 4:1 Rubi transfer case is 96:1. With 5.44:1, the ratio would be 130:1--too low for many people, and 2nd gear would only be 77:1. I really like my 96:1 in my Rubi 6 speed. Maybe on a few of the obstacles on Arrowhead in Sand Hollow I'd appreciate 130:1--or if I had 44s instead of 40s.
With 5.38 gears, the crawl ratio for a 42RLE with the 2.84:1 first gear and the 4:1 Rubi TC is 61:1. With the 42RLE and 5.44:1 would be 83:1.
I recall DesertDog saying that the something like 160:1 using a RubiCrawler was too much torque and twisted axle shafts like pretzels before he knew what had happened.