Transfer Case Swap Info NP249->NP231 & NP242 - Page 55 - JeepForum.com
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post #811 of 3106 Old 10-18-2011, 01:07 PM
Shadowless127
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1997 ZJ 
 
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Location: Smithtown
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Would a 242 out of a '99 XJ be a direct swap in (ie no changing input shafts or rear driveshafts) for my 97 ZJ?


His: 2001 Ford Explorer Eddie Bauer 5.0L - BW4404, LED Puddle lamps, Pioneer DEH-12E HU, MACH amp/sub
Hers: 1997 ZJ Limited 5.2L - NP249, Skid Plates, JVC KDR-320 HU
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post #812 of 3106 Old 10-18-2011, 01:10 PM
KingtheZJ
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Quote:
Originally Posted by Shadowless127 View Post
Would a 242 out of a '99 XJ be a direct swap in (ie no changing input shafts or rear driveshafts) for my 97 ZJ?
the input shaft will be good. the rear output depends on the specs of the casses. i'm guessing the 242 has an esy and your 249 has an isy. so the 242 will be 1.5" longer. unless you are lifted to 4.5"+ with appropriate bumpstops, this will not work. you will need to get the rear drive shaft shortened or find one that is shorter.

'88 XJ
'98 ZJ on 37s and tons
'02 Chevy 2500HD 8.1
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post #813 of 3106 Old 10-18-2011, 01:18 PM
Shadowless127
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Quote:
Originally Posted by KingtheZJ View Post
the input shaft will be good. the rear output depends on the specs of the casses. i'm guessing the 242 has an esy and your 249 has an isy. so the 242 will be 1.5" longer. unless you are lifted to 4.5"+ with appropriate bumpstops, this will not work. you will need to get the rear drive shaft shortened or find one that is shorter.
Would a driveshaft from a 96-98 ZJ w/selec-trac work?

His: 2001 Ford Explorer Eddie Bauer 5.0L - BW4404, LED Puddle lamps, Pioneer DEH-12E HU, MACH amp/sub
Hers: 1997 ZJ Limited 5.2L - NP249, Skid Plates, JVC KDR-320 HU
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post #814 of 3106 Old 10-18-2011, 01:44 PM
KingtheZJ
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Originally Posted by Shadowless127 View Post
Would a driveshaft from a 96-98 ZJ w/selec-trac work?
it depends. the d35 in the rear has a 1" shorter pinion, but the tc is likely an esy so that would be 1.5" longer...

i;d measure to make sure

'88 XJ
'98 ZJ on 37s and tons
'02 Chevy 2500HD 8.1
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post #815 of 3106 Old 10-18-2011, 02:01 PM
Shadowless127
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Quote:
Originally Posted by KingtheZJ View Post
it depends. the d35 in the rear has a 1" shorter pinion, but the tc is likely an esy so that would be 1.5" longer...

i;d measure to make sure
Ok.

Do you happen to know the length of the 249 rear driveshaft?

His: 2001 Ford Explorer Eddie Bauer 5.0L - BW4404, LED Puddle lamps, Pioneer DEH-12E HU, MACH amp/sub
Hers: 1997 ZJ Limited 5.2L - NP249, Skid Plates, JVC KDR-320 HU
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post #816 of 3106 Old 10-18-2011, 07:29 PM
mrgreen98ski
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Ok so I took the planetary here deer out of my 249 and installed it in my 242. Put the two halves together and RAM it through the gears and at no time when I turn the input shaft do either outputs turn. It's to late to tear it back apart. Any ideas on whats wrong?
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post #817 of 3106 Old 10-18-2011, 07:32 PM
sskilla
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Quote:
Originally Posted by mrgreen98ski View Post
Ok so I took the planetary here deer out of my 249 and installed it in my 242. Put the two halves together and RAM it through the gears and at no time when I turn the input shaft do either outputs turn. It's to late to tear it back apart. Any ideas on whats wrong?
sounds like you might have the t-case in neutral?

try rotating the shift lever (little tab sticking out of the side)

'95 ZJ: 5.2 v8 / 231 Tcase / 46RH
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post #818 of 3106 Old 10-18-2011, 07:41 PM
mrgreen98ski
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Quote:
Originally Posted by sskilla

sounds like you might have the t-case in neutral?

try rotating the shift lever (little tab sticking out of the side)
I did and it always acts like its in neut
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post #819 of 3106 Old 10-18-2011, 07:42 PM
sskilla
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drag. sounds like you need to pull it apart and make sure all the peices got put in there correctly.

'95 ZJ: 5.2 v8 / 231 Tcase / 46RH
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post #820 of 3106 Old 10-18-2011, 07:49 PM
mrgreen98ski
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I know and I was all pumped too.
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post #821 of 3106 Old 10-19-2011, 09:09 AM
mrgreen98ski
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Ok took it apart this morning and found the I put the mode shift sleeve in backwards. Now its back together and I have a working 242 with a swaped 1.55" input shaft.

Next question. I was comparing the 2 shift indicators and I noticed that the spring end is bout 2 to 3 time longer on the 249s then on the 242s. The threads are the same and the same length. Will this be an issue?
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post #822 of 3106 Old 10-19-2011, 09:21 AM
squazz
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MrGreen are you refering to the ball on the end, different lengths were an issues for me in my 231-231 swap it caused me not to be able to shift cuz it hit the shift pattern piece but you cant swap 249 242 as long as you got all gears I can for see no issues
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post #823 of 3106 Old 10-19-2011, 09:55 AM
mrgreen98ski
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the 249 is on the left and the 242 on the right

It's the ball end I m concerned with

Last edited by mrgreen98ski; 10-19-2011 at 10:15 AM.
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post #824 of 3106 Old 10-19-2011, 10:17 AM
squazz
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Yours looks bout the same length if you can shift all gears you should be good here was my issue http://www.jeepforum.com/forum/f13/t...l#post11173533
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post #825 of 3106 Old 10-19-2011, 10:33 AM
mrgreen98ski
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Ya I car shift all so I m gonna go install it in th ZJ now
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