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  1. #26
    registered user Jeepkid's Avatar
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    my vibes are only above 50mph also.. i could see the case maybe needing a rebuild but i had it "put" back together by the local community college, but im not so sure they did the best job.

    I could always trade out the 242 for a 231 very easily.
    2010 Dodge Ram 1500 TRX-4 Hemi, 407lb Tq 390+Hp, Navigation, Back up cam.
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  2. #27
    Member cowboy63b's Avatar
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    i dont have any vibes from the swap, but then again i have a 231 with SYE.
    Resident speeding ticket whore

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  3. #28
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    my tcase was out of a v8zj



    I dont think thats the issue but good thought!

  4. #29
    Chris Jeep98ZJ's Avatar
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    You guys ever look into the chain? If its got a lot of play in it, it could be causing vibration through the front shaft. With the front shaft in place the chain is turning even when your in 2wd.
    Platinum 5.9 167K when i bought her. 2.25" engine pipes 3" Magnaflow cat, 3" Hooker Aerochamber, 3" tail pipe, Ported kegger, 52MM Throttle Body, 24lb ford injectors, K&N drop in filter, Cast JEEP valve covers, MSD coil and wires, All new 6 piece clear light kit, 255/65/16 General Grabber HTS, 242 conversion, XJ u-joint front axle shafts

    96 Dodge Ram 1500, 5.2, picked up 12/3/13, 191K miles, edelbrock air cleaner, dual catback exhaust, headers, 50MM TB, 26,000 GVW tranny cooler, 4" lift, 35" General Grabber AT2 tires on Mickey Thompson Classic wheels.

  5. #30
    Forum CONDUCTOR Man Z88Z's Avatar
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    "Vibrations with 242 swap."


    Quote Originally Posted by smoked59er View Post
    my tcase was out of a v8zj ............

    ????

  6. #31
    Chris Jeep98ZJ's Avatar
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    yea your t-case is not out of a V8 ZJ as the V8 ZJ never came with a 242 they were all 249 cases
    Platinum 5.9 167K when i bought her. 2.25" engine pipes 3" Magnaflow cat, 3" Hooker Aerochamber, 3" tail pipe, Ported kegger, 52MM Throttle Body, 24lb ford injectors, K&N drop in filter, Cast JEEP valve covers, MSD coil and wires, All new 6 piece clear light kit, 255/65/16 General Grabber HTS, 242 conversion, XJ u-joint front axle shafts

    96 Dodge Ram 1500, 5.2, picked up 12/3/13, 191K miles, edelbrock air cleaner, dual catback exhaust, headers, 50MM TB, 26,000 GVW tranny cooler, 4" lift, 35" General Grabber AT2 tires on Mickey Thompson Classic wheels.

  7. #32
    RallyJeep GO
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    My ZJ 242 works fine, no vibes, and it has almost 60k miles more than the rest of the Jeep, no rebuilds.
    1998 ZJ 5.9 Limited - Deep Slate
    Mods: Big trans cooler, 231 swap, Indy MA-X heads prepped by IMM, Comp 20-744-9 cam, 1.7 HS roller rockers, 52mm TB, Airgap manifold, DT headers and full 3" exhaust, SCT tune homebrewed by me, Martin Saine valve body, B&M tranny pan, magic suspension made from unicorn tears, power steering cooler, lots of lighting mods

  8. #33
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    Quote Originally Posted by Jeep98ZJ View Post
    yea your t-case is not out of a V8 ZJ as the V8 ZJ never came with a 242 they were all 249 cases

    I dont know everything but I pulled it from a 96 grand cherokee with a v8 and a d44 not a straight 6 with a m35. I can tell the difference between a 6 and a 8. and I have seen more than one come through our shop with a 242 and a v8. that must be a popular swap.

  9. #34
    Forum CONDUCTOR Man Z88Z's Avatar
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    Quote Originally Posted by smoked59er View Post
    I can tell the difference between a 6 and a 8.


    I have seen more than one come through our shop with a 242 and a v8. that must be a popular swap.



    Makes sense. Lots of swaps done through the years I'm sure.


    Do you have a lift in your shop? Put it up running and in gear, give it a good listen at various speeds/rpms?

  10. #35
    Enth E Nd JeepGuy98's Avatar
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    Any of you replace the bearings before the swap?!

    Front and rear bearings are manditory in my book. As well as the tranny seal and extension rear seal.

    Output shaft front and rear bearings should at least be inspected along with the low range fork inserts and mode fork inserts.

    2000 BMW 540i M-Sport

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  11. #36
    Chris Jeep98ZJ's Avatar
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    M35? And again it's NOT a dana 44 its a dana 44A which is different in every way. Not even close to a dana 44
    Platinum 5.9 167K when i bought her. 2.25" engine pipes 3" Magnaflow cat, 3" Hooker Aerochamber, 3" tail pipe, Ported kegger, 52MM Throttle Body, 24lb ford injectors, K&N drop in filter, Cast JEEP valve covers, MSD coil and wires, All new 6 piece clear light kit, 255/65/16 General Grabber HTS, 242 conversion, XJ u-joint front axle shafts

    96 Dodge Ram 1500, 5.2, picked up 12/3/13, 191K miles, edelbrock air cleaner, dual catback exhaust, headers, 50MM TB, 26,000 GVW tranny cooler, 4" lift, 35" General Grabber AT2 tires on Mickey Thompson Classic wheels.

  12. #37
    Member cowboy63b's Avatar
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    M35=Model 35 AKA Dana 35/spicer 35, some people call them model, some spicer, most call it dana, either way is technically correct.
    Resident speeding ticket whore

    If I offend anyone tonight, I apologize. That's not my intention. I'm not going to guess what your personal line of decency is. I cross my own from time to time. It's how I know I still have one.

  13. #38
    Administrator Ninergrad's Avatar
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    Quote Originally Posted by JeepGuy98 View Post
    Any of you replace the bearings before the swap?!

    Front and rear bearings are manditory in my book. As well as the tranny seal and extension rear seal.

    Output shaft front and rear bearings should at least be inspected along with the low range fork inserts and mode fork inserts.
    On the transfer case???
    No, are they easy to do?
    -Davit.

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  14. #39
    Enth E Nd JeepGuy98's Avatar
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    Quote Originally Posted by Ninergrad View Post
    On the transfer case???
    No, are they easy to do?
    Only special tool is a snap ring pliers otherwise it's pretty straight forward.

    Just remember where everything goes.

    I can post up some writeups I used but usually when the bearings go bad you would feel it in the rear too. Unless the 242 you got was used with a lift and had an extreme DS angle on the front which put more stress on the front bearing?

    I'd say either way they should be replaced anyway. Parts aren't too spendy either.

    2000 BMW 540i M-Sport

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  15. #40
    registered user Jeepkid's Avatar
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    how far in are these bearings? the 242 has so many f-in parts inside it i wouldnt wanna got past the very outer housing
    2010 Dodge Ram 1500 TRX-4 Hemi, 407lb Tq 390+Hp, Navigation, Back up cam.
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  16. #41
    Member csouers's Avatar
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    The 242 is simple to tear down. There are plenty of people here who can help (myself included. On my third tcase build at the moment).

    To answer your question Jeepkid,

    Rear Output - The oil slinger, several snap/lock rings, seal, and extension housing have to come off.
    Front Output in front case - Everything above, plus rear case, chain, output yoke, sprocket, and front seal have to come off.
    Front Output in rear case - This is a needle bearing. Do everything from the rear output and take off the rear case along with the oil pump, pickup tube and filter.
    Input - Disassemble the entire case. Have a clean place to work and a FSM print out doesn't hurt either. jeep4x4center.com has some decent diagrams of everything as well as sells individual parts. It's helpful to have the FSM and parts catalog for the year case you're working with as things changed in 94-95.

    People who swap parts in and don't do AT THE VERY LEAST bearings and seals are wasting their time. Hence why I'm pouring a lot of money into my 242 swap (bearings, chain, seals, pads, and sector oring/bushings). I DON'T want to take it out because of a leaky seal or a sloppy chain that decides to explode (yes. it happens).
    Last edited by csouers; 08-27-2011 at 11:12 AM.

  17. #42
    Gen. 1 Troll Taz5.9's Avatar
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    Quote Originally Posted by Jeep98ZJ View Post
    Get a front axle out of a TJ or an XJ which is a HP dana 30 and that will help correct the angle of the shaft.
    TJ's don't come with the HP 30...they have the same D30 we have. only jeeps in the last 20 years that came with the HP 30 is the YJ and the XJ up to '99.

    the only real useable D30 is the '91-'99 XJ HP 30....and those don't have the caster eccentrics like the ZJ and TJ D30 do.


    FWIW i have slight front end vibes with my XJ 242, so did my '99 XJ with a 231 from the time I bought it bone stock to the time I sold it on long arms, SYE, and 32's. I think I'm going with a ZJ 231 soon, and ditching my 242.
    Slate 5.9 Limited 8"/ARB/IRO/KOR/OME/231
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  18. #43
    Member cowboy63b's Avatar
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    Good luck finding that magical fairy fart of a zj231, I quit looking and just pulled one from an xj.
    Resident speeding ticket whore

    If I offend anyone tonight, I apologize. That's not my intention. I'm not going to guess what your personal line of decency is. I cross my own from time to time. It's how I know I still have one.

  19. #44
    Administrator Ninergrad's Avatar
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    why is 231 better than 242?
    -Davit.

    98 ZJ 5.9L Slate
    Click here for MODS

    98 Ram 2500 5.9L 24V Cummins, short bed, Blue
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  20. #45
    Modfag Saleen4971's Avatar
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    People say its stronger, and iirc it had a locked 4lo? But the fulltime 4 imo is awesome
    Ross
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  21. #46
    RallyJeep GO
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    The only real difference between the 242 and 231 is that you can get a 2-lo kit and/or 4:1 low kit for the 231, and it doesn't have 4 FullTime like the 242. Both are locked in 4lo, and are similar in strength (the 242 is rated weaker, as the 4FT mode can't handle as much power, but the others can).
    1998 ZJ 5.9 Limited - Deep Slate
    Mods: Big trans cooler, 231 swap, Indy MA-X heads prepped by IMM, Comp 20-744-9 cam, 1.7 HS roller rockers, 52mm TB, Airgap manifold, DT headers and full 3" exhaust, SCT tune homebrewed by me, Martin Saine valve body, B&M tranny pan, magic suspension made from unicorn tears, power steering cooler, lots of lighting mods

  22. #47
    Enth E Nd JeepGuy98's Avatar
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    There is also waaaay more aftermarket support for the 231. 231 chain is significantly wider than the 242, less parts, lighter. Far better choice for hardcore offroading but if you daily drive in the winter, the 242 is king.

    2000 BMW 540i M-Sport

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  23. #48
    Administrator Ninergrad's Avatar
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    I am still trying to figure out what would be the best transfer case for street/strip jeep.
    231?
    242?
    249?
    -Davit.

    98 ZJ 5.9L Slate
    Click here for MODS

    98 Ram 2500 5.9L 24V Cummins, short bed, Blue
    MBPR Turbo back 4" exhaust, Edge Juice, Superchips tuner.


    http://autotruckservice.org/

  24. #49
    Member NoTime's Avatar
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    Quote Originally Posted by Ninergrad View Post
    I am still trying to figure out what would be the best transfer case for street/strip jeep.
    231?
    242?
    249?
    I am running the 242 in FT 4wd right now with 4 drag radials,,,, but still having problems with front wheel spin on launch. I was getting better 60ft in 2wd with 2 drag radials.

    I might throw the 249 back in over the winter and try it to verify my times.

    Tim
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  25. #50
    Member cowboy63b's Avatar
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    Quote Originally Posted by JeepGuy98 View Post
    There is also waaaay more aftermarket support for the 231. 231 chain is significantly wider than the 242, less parts, lighter. Far better choice for hardcore offroading but if you daily drive in the winter, the 242 is king.

    the chains are the same width, you can upgrade to a wide chain from a 231HD/241HD (from a fullsize dodge 241 being more common)

    or just get the kit from JB Conversions for $$$
    http://www.jbconversions.com/index2.php?pc=1


    i have a 231 with all teraflex and AA goodies, sans 4lo kit

    but a JY 231 with a rebuild and all the teraflex goodies, and youll be knocking on an AA Atlas 2 TC, and you might as well get that instead.

    gear driven and strong as shit, and they run them in KOH


    oh a 249 =
    Last edited by cowboy63b; 10-12-2011 at 10:06 PM.
    Resident speeding ticket whore

    If I offend anyone tonight, I apologize. That's not my intention. I'm not going to guess what your personal line of decency is. I cross my own from time to time. It's how I know I still have one.

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