Transfer Case Swap Info NP249->NP231 & NP242 - Page 54 - JeepForum.com

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post #796 of 3275 Old 10-12-2011, 05:29 PM
sskilla
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i believe they are all 23 spline out of zj's. dont quote me on that but i think its correct.


'95 ZJ: 5.2 v8 / 231 Tcase / 46RH
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post #797 of 3275 Old 10-12-2011, 09:14 PM
Midnightluckey
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Quote:
Originally Posted by sskilla
i believe they are all 23 spline out of zj's. dont quote me on that but i think its correct.
That is correct. It's the 4cyl tj's and xjs you gotta look out for with 21spl.

95 Limited Chargold ZJ 5.2L -5.5" lift (IRO, Ironman, and RC parts), 33" BFG M/T's, 15x8 procomp crawlers, 242 swap, 2 12" subs, 1000w amp, cherry bomb, full skid package, Kevins rear stealth bumper clone w 3/4" D rings, Rlcwelding front bumper w 3/8" D rings, XRC-8, front tow hooks, 2 daylighter fairlead lights, 2 daylighter windsheild lights, 2 55w driving lights, OBA, Cobra 18 CB, dual 4' whips, RC disconnects, smittybuilt jack, optima yellowtop.
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post #798 of 3275 Old 10-13-2011, 12:36 PM
jclaudii
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23 spline huh...whats the ods it will fit my 242??
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post #799 of 3275 Old 10-13-2011, 12:43 PM
KingtheZJ
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Quote:
Originally Posted by jclaudii View Post
Does anyone know the spline count of a zj np249 that came out of a limited '97 v8? I'm wanting to (hopefully) pull that 249 yoke off and put it on my nv242 of my '01 grand cherokee. I may have found a double cardan ujoint style with a cv on one end that may work for my wj.

Thanks!
Quote:
Originally Posted by sskilla View Post
i believe they are all 23 spline out of zj's. dont quote me on that but i think its correct.
i think he is talking about the driveshaft yoke, not the input shaft. yes all ZJ input shafts are 23 spline.

i assume this is to convert a front driveshaft with cv attachment to the tcase to a double cardian attachment with yoke?
i'm 99% sure all the front outputs on the 231/242/249 are all 32 spline, so you should be good. i know the '98 249 i put together with an '88 242 both had the 32 spline front output yokes

'88 XJ
'98 ZJ on 37s and tons
'02 Chevy 2500HD 8.1
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post #800 of 3275 Old 10-13-2011, 06:13 PM
Mediokrates
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Hi all,

Gonna look into checking which gears I get this weekend, and making the adjustments to the shift linkage.

In Jr's How to, he says: "Put the shift lever in 2wd, then get under the Jeep and loosen the 13mm adjustment bolt on the shift linkage."

I assume he's referring to the trunnion lock bolt on the selector rod and trunnion.

Which direction moving the trunnion affects the linkage how. Meaning, if moved closer to the shift lever, will this shorten or lengthen the range?

Thanks
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post #801 of 3275 Old 10-13-2011, 06:27 PM
sskilla
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i believe moving the trunnion closter to the shift lever will shorten your range if i understand you correctly.

sliding it as close to the end of the selector rod as you can should give you the longest range

'95 ZJ: 5.2 v8 / 231 Tcase / 46RH
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post #802 of 3275 Old 10-17-2011, 05:45 PM
mrgreen98ski
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I have a 1994 ZJ and I am looking to swap the 249 to a 242. I found the 242 locally and need help choosing the one to get. I found one in a 1990 XJ and one in a 1996 XJ. My main concern is the gear cut. my 249s date is 6 22 94 1. the the 2 242s i am looking at I didn't get that info just the year of XJ 1990 and 1996. The write up says 94.5 is when the cut changes but I want to go get this tomorrow morning and wanna be sure I get the right one. I will have a bit to change over to make either work.

thanks for any help provided
Mr Green

EDIT. What I am thinking is using the 242 out of the 1996 XJ and swapping the input shaft and then front case from my 249 if the gear cuts different. But I don't know if that's gets rid of the VC if I use the front case.

Last edited by mrgreen98ski; 10-17-2011 at 06:10 PM.
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post #803 of 3275 Old 10-17-2011, 06:40 PM
sskilla
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if you plan on using your front case half then yeah the 96 should work fine.

be sure to check if it is a ISY or ESY.

good luck man

'95 ZJ: 5.2 v8 / 231 Tcase / 46RH
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post #804 of 3275 Old 10-17-2011, 07:09 PM
mrgreen98ski
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Ok so what's isy and esy? Sorry for the ignorant questions. Is the VC coupler I am trying to get rid of in the front case of the 249?
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post #805 of 3275 Old 10-17-2011, 07:16 PM
sskilla
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ISY = Internal Slip Yoke

ESY = External Slip Yoke

you should see which you have and find a 242 that has the same. otherwise you will probably also need to get a new or resized rear drive shaft.

and no the VC is in the back half. doing the front case half swap will eliminate that from your setup.

'95 ZJ: 5.2 v8 / 231 Tcase / 46RH
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post #806 of 3275 Old 10-17-2011, 07:31 PM
mrgreen98ski
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Thank you very much for the info. I'll look for how to tell the diff on isy and way ill be back if helps needed
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post #807 of 3275 Old 10-17-2011, 08:16 PM
mrgreen98ski
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is the difference between the ISY and ESY that one the drive shaft slide out of the TC and the other were the drive shaft will unbolt from a yoke on the TC?
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post #808 of 3275 Old 10-18-2011, 07:55 AM
speedbucket
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internal has a cone that the yoke slides into with a seal
external has the output shaft exposed and a rubber boot that covers the sliding yoke
neither bolts up, a t case with a slip yoke eliminator bolts up and the slip is in the center of the shaft like your front driveshaft

http://www.jeepforum.com/forum/f22/speedbuckets-zj-build-1361322/
V8 zj at 6" . Double tri rear and true 3 link front. Stretched to 108"
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post #809 of 3275 Old 10-18-2011, 09:58 AM
mrgreen98ski
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ok so i opted to get the 1990 TC due to the output shaft matched my 249, i'll still need to change the input shaft. hope i didn't make a mistake picking that one
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post #810 of 3275 Old 10-18-2011, 10:51 AM
jclaudii
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Quote:
Originally Posted by KingtheZJ View Post
i think he is talking about the driveshaft yoke, not the input shaft. yes all ZJ input shafts are 23 spline.

i assume this is to convert a front driveshaft with cv attachment to the tcase to a double cardian attachment with yoke?
i'm 99% sure all the front outputs on the 231/242/249 are all 32 spline, so you should be good. i know the '98 249 i put together with an '88 242 both had the 32 spline front output yokes
You are correct, I am talking about the front output yoke that connects to the driveshaft. I appreciate your feedback and this makes me feel a bit better about my search for a donor yoke.
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