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  #1  
Old 02-16-2015, 04:39 PM
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transfer case swap. PLEASE HELP

So i finally got somemoney together and wanna do a t-case swap on my 99 WJ. I want to put a select trac transfer case on. The problem that i see is the fact that the jeep has CV joints. Are there t-cases that are CV jointed? Are there drive shafts go from u- to cv- joints?

Also, as many of us, I am on the budget. The cheaper the better. I want to get a t-case either from craigslist or junkyard. What should I look out for in it to make certain that i dont buy a broken one? I know I also will need to pull the rear driveshaft as well as the t-case. Do i need to pull both front and rear or just the rear if the t-case is cv-jointed?

Any good place to look for those places like web site? My absolute max i wanna spend is $500

Thanks in advace

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  #2  
Old 02-16-2015, 07:21 PM
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Re: transfer case swap. PLEASE HELP

The joke on the T-case can be changed or to CV, or to U-joint. There are several types of propeller shaft available, from double CV to double U-joint or a combination of the two.
Not 100% sure, but i believe that the front propeller shaft can be re-used.
You probably also will need a new shifter assy, which has the different T-case shift positions on it.
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  #3  
Old 02-16-2015, 09:31 PM
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Re: transfer case swap. PLEASE HELP

Cool. Any web sites you recommend to look at?
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Old 02-17-2015, 05:47 PM
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Re: transfer case swap. PLEASE HELP

Sorry, i donīt have any web site for this. Attached some pictures of the different propeller shaft joints.
Attached Images
File Type: jpg JeepDriveShafts.jpg (30.8 KB, 7 views)
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Old 02-17-2015, 10:41 PM
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Re: transfer case swap. PLEASE HELP

Also, I have heard I need to swap the input shafts on the transfer case. Do I need to actually do it? Can I use the old one from the 247? How hard is it to do that?
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Old 02-18-2015, 05:44 AM
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Re: transfer case swap. PLEASE HELP

I have never done this swap myself, but as far as i know, will the T-case bolt directly to the transmission, there is no input shaft to swap
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Old 02-18-2015, 10:58 PM
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Re: transfer case swap. PLEASE HELP

Do the WJ's with 4.0 and 4.7 have the same transmission?
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Old 02-19-2015, 11:20 AM
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Re: transfer case swap. PLEASE HELP

No, the 4.0 uses the 42RE transmission, while the 4.7 uses the 5-45RFE.
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Old 02-19-2015, 11:31 PM
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Re: transfer case swap. PLEASE HELP

Hmmm I see. Well can I take the input shaft from the 247 and put it into a 242? I heard that they are different lengths though
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Old 02-20-2015, 09:33 AM
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Re: transfer case swap. PLEASE HELP

As far as i know there is no difference between 247 and 242 regarding input shaft. You should be able to bolt the 242 in place without any modification to the input shaft.
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  #11  
Old 03-05-2015, 09:45 AM
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Re: transfer case swap. PLEASE HELP

Hi,
I did the swap on my 2000 Grand Cherokee Limited 4.7 a few weeks ago. I put in a selectrac 242j out of a 4.0 6 cyl from the junkyard. I know in my case, and also what the consensus seems to be is that both the rear drive shaft and the input shaft on the transfer case need to be swapped.
I have heard that certain 242s have the same input shaft as the 247, but that was not the case for me. It is really overall a super simple swap.
As for the front shaft, that seems to be a potluck with all the mods folks have done out there. Odds are, the 242 will have a CV yoke for your front shaft. So you can bolt your old one right to it. Be careful, front shaft bolts into the transfer case and into the differential are different lengths. Dont make the mistake I made and put in all the wrong ones first. ( Double work )
Feel free to email me with any questions. I know I would have liked to have a resource like that when I did Mine. Getting some of the bolts off the t-case can be tricky. aaronpmartin85@gmail.com
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  #12  
Old 08-16-2016, 01:07 AM
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Re: transfer case swap. PLEASE HELP

When you got the tcase, did you pull it out of the WJ also?
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