The Speed Freaks

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  1. #1
    Member PAFirefighter's Avatar
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    ZJ Transmission Swap AND 46RE Vent Tube!

    So for those who have not yet seen it, I sank my ZJ in the NJ Pine Barrens several weeks ago:


    After running 6 gallons, 2 quarts worth of Mopar and crappy brand ATF, the trans finally gave in. R, N, D, 2, 1 all became Neutral. Fail! So, I had to source a new trans. My buddy was heading up to Connecticut on Friday to pick up parts from his 5.9L ZJ from a 5.9L that had sustained a rear end collision. Mileage is the same as mine. I e-mailed the guy and worked out a deal for his trans. He said it worked great. My buddy picked it up, and I had it on Friday night.

    Yesterday (Saturday) I got the Jeep towed to my other buddy's shop:


    At 4:30pm, the transmission swap fun began:


    Removal of driveshafts was first, then the crossmember, and out came the t-case:


    After some bellhousing bolts, removal of electrical connections, hard lines, vent tubes, etc., out came the trans:






    Both of the transmissions side by side. My failed trans is the non-rusted, cleaner looking one. Oh well:


    On to the important stuff to make sure the trans isn't swamped again. Test fitting tube:


    A little bit of grinding work:


    Drilling:




    Tube looks to fit great:




    Some sealing:




    Everything back in, torqued down:


    By the time 11:15pm rolled around we just finished up the new vent tubes - t-case vent extended & new vent tube for the trans - both up in the engine compartment now:


    Everything seems great at this point. Trans shifts a bit stronger and a bit higher. Feel like a trans shift kit or something possibly? Either way, works great! Can't wait to get this thing back on the trails. 3" lift and 31" Mickey Thompson's may be in the near future.
    -Rick R
    -Quadratec Live Chat Tech Support - The statements in this message do not necessarily reflect the opinions of Quadratec, Inc.
    -'01 Trans Am WS6 - LS1 348 V8 - Will Be For Sale Soon
    -'98 Trans Am WS7 - LS1 348 V8 - Summer Toy
    -'03 Volkswagen Golf TDI - 1.9L Turbo Diesel 4 banger - DD
    -'98 Jeep Grand Cherokee ZJ - 5.9L 360 V8 - Winter / Bad weather beater
    -Nikon D2x w/ lots of glass

  2. #2
    Forum CONDUCTOR Man Z88Z's Avatar
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    Glad to see you got her fixed!!

    So she's up and driving now?

  3. #3
    Senior Member x10radsponge's Avatar
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    Can you explain where the tube is coming from, before you drilled the housing? I am not quite grasping that. Other than that, glad you are on the road again.

  4. #4
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    Looks great man, thank you for the inside of the tranny and the vent tube. I will have to do the same.
    Question. How long was the tube coming out of the tranny? and where was it located? On top, side, bot?

    5.9 FTW

  5. #5
    Member SilverXJ's Avatar
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    I don't think there is a tube stock. There is just the vent hole. Some people plug it and put the vent tube in another location.

  6. #6
    Member PAFirefighter's Avatar
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    Up and running, driving great now.

    Correct, there is no vent tube on the stock trans. That's the problem! It's just a hole as shown here (Under the one we drilled):
    -Rick R
    -Quadratec Live Chat Tech Support - The statements in this message do not necessarily reflect the opinions of Quadratec, Inc.
    -'01 Trans Am WS6 - LS1 348 V8 - Will Be For Sale Soon
    -'98 Trans Am WS7 - LS1 348 V8 - Summer Toy
    -'03 Volkswagen Golf TDI - 1.9L Turbo Diesel 4 banger - DD
    -'98 Jeep Grand Cherokee ZJ - 5.9L 360 V8 - Winter / Bad weather beater
    -Nikon D2x w/ lots of glass

  7. #7
    Senior Member x10radsponge's Avatar
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    Quote Originally Posted by PAFirefighter View Post
    Up and running, driving great now.

    Correct, there is no vent tube on the stock trans. That's the problem! It's just a hole as shown here (Under the one we drilled):
    What is on the backside of that plate? Am I looking at the shaft that the torque converter slips on right? I just looks like there is light on the other side of the hole, not where you drilled the new one on the bell housing.

  8. #8
    Member SilverXJ's Avatar
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    There is kind of a baffle plate behind that hole. IIRC its plastic. What you see is the flash bouncing off of the baffle. Here is a good picture of the backside of the pump housing:

  9. #9
    Member PAFirefighter's Avatar
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    Quote Originally Posted by x10radsponge View Post
    What is on the backside of that plate? Am I looking at the shaft that the torque converter slips on right? I just looks like there is light on the other side of the hole, not where you drilled the new one on the bell housing.
    That yellow-ish colored thing? That's inside the trans.
    -Rick R
    -Quadratec Live Chat Tech Support - The statements in this message do not necessarily reflect the opinions of Quadratec, Inc.
    -'01 Trans Am WS6 - LS1 348 V8 - Will Be For Sale Soon
    -'98 Trans Am WS7 - LS1 348 V8 - Summer Toy
    -'03 Volkswagen Golf TDI - 1.9L Turbo Diesel 4 banger - DD
    -'98 Jeep Grand Cherokee ZJ - 5.9L 360 V8 - Winter / Bad weather beater
    -Nikon D2x w/ lots of glass

  10. #10
    Senior Member x10radsponge's Avatar
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    Ok, thanks... that had be really screwed up. Kept looking at my trans manual and was not putting it in drive... my brain... ha ha... pun intended.

  11. #11
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    What kind of sealer did you use? Will high temp rtv be ok?

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