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Thread: Transmission Compatibility HELP ASAP!!!!!

  1. #1
    Stock Is NOT An Option mdoffroad's Avatar
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    Default Transmission Compatibility HELP ASAP!!!!!

    I have a 94 ZJ with the 42RE Trans, and I am possibly getting a 96 ZJ with the same driveline...are the transmissions years compatible??If not what years do I need ot look for?? PLEASE HELP ASAP!!!!!
    MÄττ
    Hangin' on JU for more than 13 years now!!

    04 WJ Onyx Pearl - sporting bent tow hooks from a crook named FishPOET




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    If you are thinking about swapping trannies, forget it as far as I know. The 93-95 had the 42RH or 44RH (or the AW4 in the early 93 4.0), whereas the 96-98 have the 42RE or 44RE (or 46RE in the 5.9). Not the same. Might physically fit, but I dont think it'll work.


    -Jeff
    1996 ZJ Limited 5.2l, 31" Pirelli Scorpion AT, UC springs with Anthony's BB, Trac-lok, K&N FIPK, and heated seats that work now! (SOLD)

    2002 WJ Limited 4.7l, tow package, moonroof, 06 Rubicon Rims, bone stock but 21mpg!

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    i think the RE's were also on in 95's. I've got the FSM for the 42RE for 93 and a half to 95. Everything basically lines up from the manual to my tranny. I couldn't find anything about getting a diagnostics manual for the RH

    There's some oddities though, like my transmission fill tube is on the drivers side, not the passengers side. Does that mean it's an RH?


    KC

  4. #4
    ***** ****** Carlito Benito's Avatar
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    -=- originally posted by kc76 -=-
    There's some oddities though, like my transmission fill tube is on the drivers side, not the passengers side. Does that mean it's an RH?


    KC
    Hmm... i want to know too! My 94ZJ im sure had a 42RE with the fill tube on the passenger side..... my 95 ZJ has the fill tube on the left side.
    Now: 11 WK2 Overland 4x4
    Past: 00WJ

  5. #5
    Stock Is NOT An Option mdoffroad's Avatar
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    the build sheet for the ZJ I HAVE (94) says 42RE.. I was jsut wondering if the trannies had differnt electronics or what not,, I mean worst comes ot worst, what, swap the entire engine harness with the engine and trans??
    MÄττ
    Hangin' on JU for more than 13 years now!!

    04 WJ Onyx Pearl - sporting bent tow hooks from a crook named FishPOET




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  6. #6
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    -=- originally posted by JeffBrinkerhoff -=-
    If you are thinking about swapping trannies, forget it as far as I know. The 93-95 had the 42RH or 44RH (or the AW4 in the early 93 4.0), whereas the 96-98 have the 42RE or 44RE (or 46RE in the 5.9). Not the same. Might physically fit, but I dont think it'll work.




    -Jeff
    42RH was not used in the ZJ, they were all 42RE's. Unless someone has done the swap before and has info, I think the only way to tell is to see them side by side, and go over all of the sensors & solenoids for compatibility, that's mostly what I would think would be different from year to year, or call somebody like APS that really knows Mopar trannies. Everyone else (myself included) is making an educated guess. Also, I think you might need to get the later trans to work with the early trans's TCM, or it might confuse your engine computer, unless the TCM's were identical year to year.

  7. #7

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    You should have compatibility electronically and bolt pattern wise, however there are variations on the 42RE output shafts that you need to be aware of- the early ones have a step at the end, the later ones have splines that extend to the end of the shaft. I'm not sure what year the change takes place, but I believe the spline configuration needs to match the t-case that you plan to use.
    -John
    '88 XJ 4.0L w/ NP242
    Owner, IPT Performance Transmissions

  8. #8
    Stock Is NOT An Option mdoffroad's Avatar
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    well as of today... I decided ot let the Grand go.. I am not gonna screw with this, there are too many good runnign vehicles out there for antoher1000 over what I would have in parts alone.. maybe jsut get another XJ....thanks to all.. and thansk for not lettign me get inover my head..
    MÄττ
    Hangin' on JU for more than 13 years now!!

    04 WJ Onyx Pearl - sporting bent tow hooks from a crook named FishPOET




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