|Topic Review (Newest First)|
|08-10-2020 04:34 AM|
Thanks for all the reply's.
The only thing then is if there is a difference between the output shaft/rear drive shaft?
I'll be buying the 242 from a scrap yard, but it's still installed on the car and they don't have any pictures of it, so i have no way of comparing it visually with my 249.
Either way for roughly $175 i think it could be worth the risk/effort of getting this and getting rid of my 249, in preparation for some sort of autolocker in my front axle!
|08-09-2020 10:08 AM|
I just finished swapping from a 249 to a 242. This "how to" thread is the best I found. I read this and then re-read several times. Even after feeling like this would be a piece of cake. I still had to figure out little issues along the way. I though I had all the right linkage. Had 2 sets of linkage. 1 from my ZJ 5.2 np249. And the donor set that came with the 242. It all looked the same to me, until you get that linkage up in their.
The I found that there are different rod lengths. It's just a "Rubik's Cube"...I finally figured it out, but damn...it was a bit frustrating....now that it is together, it will be great having that 249 viscous coupler gone...so I think...lol...whats the next hurdle? Oh and it is a monetary transaction for every "upgrade" I had to overcome several problems...rear diff carrier and pinion bearings were AFU... previous idiot had no business in there...caps were on backwards...pinion depth COMPLETELY wrong....I have my hands full fixing stuff on this ZJ...But it will be nice this winter in the snow! And can't wait to get it done!
|08-09-2020 05:40 AM|
|Timo_90xj||Yeap, it's close so it either works or it doesn't. I couldn't get enough throw with my original linkage and had to grind the gate a bit. Without grinding, I was constantly popping out of RWD or 4lo, depending on the linkage adjustment.|
|08-08-2020 05:31 PM|
|CatSplat||FWIW, when I did the 242 swap I used the 249 gate with no issues. Never did bother to install the 242 gate, just put on a 242 bezel.|
|08-07-2020 08:12 AM|
Originally Posted by terpsmandan View Post
I'm using a Novak cable shifter. I've been very happy in how it works.
|08-07-2020 04:57 AM|
Originally Posted by Timo_90xj View Post
|08-07-2020 04:55 AM|
Originally Posted by Gurfen View Post
|08-07-2020 02:01 AM|
Originally Posted by Gurfen View Post
Yeap, direct fit for the TC.
Keep in mind the 249 shifter gate may not provide enough throw to get all the ranges from the 242. Either grab the 242 gate or slightly modify the existing one with an angle grinder.
|08-07-2020 12:39 AM|
So, i've searched and searched for info about this, and the way i interpret the info in this thread... a 242 tc from a -98 GC with the I6 should fit "bolt-on" to my -96 GC 5.2 V8 with a 249 tc?
As far as input shafts and things go, they should be identical, or am i missing something here?
There's just so much info on this subject, it's hard to sort out for my tiny brain... 😖
|06-28-2020 08:08 PM|
|JAF_98_ZJ||I just finished up with a 249 to 242 tc swap and joined the forum just because of this info on this thread! I'm glad I found it before I was to far along! I was having an issue with the gear cut difference on the planetary/input shaft. I put the 249 input into the 242 planetary. It seems clunky, not smooth...I stopped to do some research and found this thread....THANK YOU!|
|06-24-2020 02:00 PM|
Originally Posted by variable View Post
|06-23-2020 10:57 PM|
Originally Posted by wildbill23c View Post
I can live with that one - its just an inconvenience at the moment (more so off road I'm sure, but beats tearing it apart yet again... ATF isn't cheap!)
Now to track down why my driveline still has vibes in it even though the pinions are almost dead on (with in 0.2* at the rear, less in the front).. I'll save that for the appropriate thread though.
|06-23-2020 07:56 PM|
Could be the transfer case was stuck in full time, so when you shifted it to part time high and low it hadn't disengaged from the full time mode? I know it can happen in high range between full and part time, so may be what happened was it was just stuck in full time, I know with my 98 ZJ between part time and full time it'll get stuck in part time quite often when I want full time mode, it takes a bit sometimes shifting out of 4WD and back to full time mode a time or 2 in order to get it to shift to full time mode...mostly due to lack of use I think. I don't think it could get stuck in full time and be engaged in low range as its running through the low range reduction gears at that point, but pretty sure it may have just got stuck in between full and part time and was making you think something was wrong.
I don't think you can physically put the case together and have it spinning wrong, its chain driven, so it'll spin the same way, and I don't think there's any way it could go together backwards to get it to spin opposite directions mechanically.
|06-23-2020 07:23 PM|
Yeah..... that occurred to me somewhere in the middle of the night while I was sleeping and I think I face palmed in my sleep... and you beat me to it. Oh well
However... what it doesn't explain is why I was essentially getting 4FT in all but neutral.
I tore it all down again and found that the low range planetary gear "box" must have some very minor change at some point - I had another one that was almost identical (even had the same number stamped on it - 549 I think?) - the main shaft in the one I was using sat about a snap ring's width too deep (no I wasn't missing any). I swapped the other one in though I didn't know yet that there was going to be a difference till I put it back together to the point where I could stick something flat across the front and rear output gear, and low and behold, that fixed the shaft sliding in and out problem. I then noticed that the gear that slides into the differential 'box' wasn't always in all the way when it was in neutral so I took a close look at the shift fork and found it to be a little bent - not a lot, but enough apparently.
In any case, aside from some weirdness with getting out of 4 low, so far so good. Need to freeway test it next. I doubt this is going to solve my vibrations, but hopefully it'll be one less thing to deal with. (My back would really appreciate it...)
|06-23-2020 01:13 AM|
Originally Posted by CatSplat View Post
I currently have my 242 disassembled in the garage floor, and it is not possible to assemble it so that front and rear outputs would rotate in different direction when in 4 hi/lo part time.
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