The 242 was used for many years in both the H1 and H2, but yes, 2005 is in that range. I just searched 242 6 planetary (or something similar) on ebay. I didn't think I had any chance of finding one at a junkyard.Thank you man!This is great news
So To get the 6 gear planetary would it be the from a 2005 ish Hummer?
I've been working on power increases myself, working up to a turbo. I am not overly concerned about the 242 strength, but I don't wheel hard.
Hey yall so.....long story short,I want to do my savvy tummy tuck,a while ago I bought a T-case from the summit outlet foolishly thinking it was a Np231.....I have an SYE for a 231 from AA but that won't work on a 242
What i have is an Np242 for up to an 04 Grand cherokee
1. From what im reading the clocking is no different since the clocking is on the Trans. For those jeeps?
2. I have a 42rle but got plans to move on to an AX15 within a year so I'd need to take the input shaft from my 231 and put it on the 242?
3. Would my savvy cable shifter work?So I'd just need to modify the shifter gate that's in the cabin?
4. From what I'm understanding the 242 handles more power because the main shaft is bigger ? That interests me alot! Cause what I thought was a hold up may not actually be?
5. Looks like I'd need to go with Tom woods for an SYE? I'd like to keep my speedo,I'm not using my phone !
View attachment 635433
I was gonna start disassembling this Tcase but realized it was a 242...
View attachment 635434
Peep the SYE in the back.....and the Rubicrawler(not gonna be using it anytime soon)
2 same
4 if true it's irrelevant.231 handles v8 power
If Jezza snapped a 231...i may too, cause I can be ruthless......I broke a Dana 44 axle shaft on 31s,Granted stock axle shafts but still,That surprised me lol
Once i get An AX15 it will see alot of cutch dumping,nitrous launches Etc. So I need as much beef on that T-case shaft as possible (for greater peace in mind) ,I really wanted to do my Savvy tummy tuck starting to day but it looks like ill be getting another SYE kit for my 242 along with a 6 gear planet. Not now since im not ready to dump 1200 right now! I only had planned on spending 450 for a Driveshaft but things happen
And idk if the 242 with an SYE is any longer than a 231 with an SYE,Id rather have it all put together rather than finding out like "Oh This thing is an inch Longer.....may have to lengthen my driveshaft" Etc
Edit- What i stated above is an example, Idk if its true or not on weather the Tcase is longer or shorter cause Im not competent of the case differences of a 242 and 231, Ive done the SYE on a 231 once and thats it....
I have a comment about the 6 pinion planetary. I have not split mine open to verify but it seems like the main planetary housing is the same among many of the NP transfercases. There was a gear cut difference at some point but if you get a similar year planetary from something like a NP261 from a 4L80 equipped chevy truck (has the 6 pinion planet), it should fit but you would have swap the input shaft out of the Chevy planetary since it is a different spline count. But even then the input shaft you need for Jeeps should just drop into the chevy planet housing.
Welp skip everything I said....I just got the Sye from Tom woods with a 1350 flange.
I'm just gonna do it all since I got a week off,I'm rushing...
I'm just gonna do it all since I got a week off,I'm rushing...
95-96 is the split for different gear cuts. Plenty of 24x cases had 6 pinions as well
Welp I sure as heck got the 3 pinion planet.
6 gear planetary ordered...should hopefully be here next Friday,Put everything together and get the ball rolling
I'll be getting my sye Wednesday from what the guys at Tom woods said,I could still assemble everything just not seal it so I can atleast get some numbers in to get my drive shaft ordered!
Edit,Forgot to add the pic of the input side
Looks like I have the short input right ?
6 gear planetary ordered...should hopefully be here next Friday,Put everything together and get the ball rolling
I'll be getting my sye Wednesday from what the guys at Tom woods said
,I could still assemble everything just not seal it so I can atleast get some numbers in to get my drive shaft ordered!Edit,Forgot to add the pic of the input side
Looks like I have the short input right ?
Well D, you are certainly not messin' 'round. I love seeing your enthusiasm. Keep at it!
Well D, you are certainly not messin' 'round. I love seeing your enthusiasm. Keep at it!
Thank you
Im just gettin startedOne day i"ll get close to your level ! Stretched,BIg tires&axles etc.
Welp I sure as heck got the 3 pinion planet.
6 gear planetary ordered...should hopefully be here next Friday,Put everything together and get the ball rolling
I'll be getting my sye Wednesday from what the guys at Tom woods said
View attachment 635568
Edit,Forgot to add the pic of the input side
Looks like I have the short input right ?
View attachment 635569
Yes that is the short...
https://www.novak-adapt.com/knowledge/transfer-cases/np-nvg-input-gears.html
Coachgeo
TJ Enthusiast
ok I am being stupid again...... how do you search INSIDE THIS THREAD ONLY. can find search features for everthing but searching inside a single thread.
Wanting to recheck the years of the two input bearings sizes of 16mm and 24mm
UPDATE- found that... just a scan up found a more recent post.
Wanting to recheck the years of the two input bearings sizes of 16mm and 24mm
UPDATE- found that... just a scan up found a more recent post.
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Coachgeo
TJ Enthusiast
did anything change beside the bearing size ..... in reference to the bearing...... as in ... where they bearing rides..... did that change.....
As in ..... I got fubared and my main shaft dissappeared after Dec. 2024 dissassemly and boxing it all up.... Now here in Sept. 2025 back at it..... well Eddie my buddy is back at it. Picked up another 242 to rob shaft out of.. my original rebuild started inside a 2003 Tcase,
robbed shaft got now is from a 99. Have the whole 99 TCase actually. sadly the 99 also does not have the NP231 spot in the short rear shaft case for speedo. the 99 and the 2003 short rear case is the same. that would have been a nice consolation prize
previously got proper bearings to fit the trans input I intended to use. Main reason for disassembly back in Dec. in first place was to swap input gear to match the manual trans.
is that 99 shaft going to cause issues in the 2003 stuff orr? 2003 case half had already has some of the new bearings installed and all cleaned up. Am hoping to use 99 for shaft and for a mock up to remind how the puzzle goes together.
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Coachgeo
TJ Enthusiast
sense asking you have learned the bearing surface on the shaft is the deciding factor. Either shaft can be used in a rebuild as long as you use input gear, main shaft all have matching bearing size.
Question to all the folks here:
After you upgrade to NP242, now you have torque going to front wheels in all situations if selected. How you deal with the fact that you have front shafts with U-joints instead of RCVs? Are you taking Dana 30 RCVs from XJ or something?
After you upgrade to NP242, now you have torque going to front wheels in all situations if selected. How you deal with the fact that you have front shafts with U-joints instead of RCVs? Are you taking Dana 30 RCVs from XJ or something?
Not sure what you're trying to ask..
There have been many full time rigs that had front axle shafts that had u-joints instead of CV joints. I think from what I've gathered (could be wrong) many folks take their CV axle shafts out & install u-joint shafts instead due to a strength issue? But I could be mistaken about that.
And you're only powering the front axle when in 4WD HI or AWD.
IIf you apply a lot of torque to the front at high speed and the steering wheel is turned to the maximum left for example, doesn't it breakthe ujoint? I thought that u-joints have issues at high angles at high speeds.
If you're fully locked Yes you can break a u-joint but it isn't 100% always going to happen. It takes many times for the ears on the shaft to stretch or break on the shaft which then takes out the u-joint. But how many times are you ever fully lock to lock when driving on the street?
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