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Thread: anyone ever heard of this

  1. #1
    That Guy afjeep's Avatar
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    Default anyone ever heard of this

    a bushing that goes in the back of the driveshaft so that the torque converter will fit right? here's why.

    today i get a call from the shop that built my engine. turns out they have 3 or 4 crank shafts that got mixed up. one of em is from my old engine. problem is that one of them has a bushing in the rear hole of the crankshaft. with out this bushing, if in fact that one was mine, my torque converter will not properly fit into the crankshaft and apparently will cause my front transmission pump to die. they arent sure if it came from a manual or auto trans jeep. the problem is the engine is already in. yes i can dismount it and move it but would rather not.
    2004 Rubi, Poison Spyder Bumper with Trail Stinger. Warn M8000 winch, Rock Krawler X-factor long arm 4 inch lift, 35x12.50x15 BFG KM2s on Procomp 8 inch steelies, Tom Woods Driveshaft, Poison Syder Full Roll Cage, Tuff Designs rear bumper/Tire carrier, MetalCloak Arched Tube Fenders with 6 Inch Flares, Flowmaster Hushpower Muffler, Vanco Big Disk Brake upgrade, Line-X'd tub and cage.

  2. #2
    Senior Member Sr. Beaver's Avatar
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    I've never seen there be a bushing on an auto, I know there are bushings in the back side of the crank for manuals, so the input shaft is aligned properly. It's been quiet some time since I had a auto out of a chrysler/ Jeep product but I don't recall the torque converter actually going into the center hole on the crank, should just be the 3 or four bolt that go to the flexplate.
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  3. #3
    Devil Doc Navydoc8778's Avatar
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    My auto (95) had no bushing. It just had the 4 bolts to the flywheel.

  4. #4
    That Guy afjeep's Avatar
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    thanks, i was thinking i would be alright. on the phone with the dealership service dep. they confirmed what y'all said. they said that bushing is the pilot bearing. thanks again guys.
    2004 Rubi, Poison Spyder Bumper with Trail Stinger. Warn M8000 winch, Rock Krawler X-factor long arm 4 inch lift, 35x12.50x15 BFG KM2s on Procomp 8 inch steelies, Tom Woods Driveshaft, Poison Syder Full Roll Cage, Tuff Designs rear bumper/Tire carrier, MetalCloak Arched Tube Fenders with 6 Inch Flares, Flowmaster Hushpower Muffler, Vanco Big Disk Brake upgrade, Line-X'd tub and cage.

  5. #5
    on top, usually
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    id seriously be looking at a different shop. every shop ive been too and worked at tagged, stamped, or paint markered peoples stuff. how do you mix up cranks? sounds like they might have jacked up yours and are trying to replace it with another, ive seen that a few times before.

  6. #6
    Senior Member HillBillE's Avatar
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    Yep, sticks have pilot bushings/bearings, but every auto I've ever seen, the converter mounts to the flywheel, and can't move.

    Where as a manual tranny, the clutch mounts to the flywheel, and the pilot bushing keeps the tranny mainshaft from 'flopping' around when the clutch is pushed in.

    X2 on finding a new shop!


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  7. #7
    That Guy afjeep's Avatar
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    see, thats what i kept thinking, if the crank is bolted to the flywheel, and the flywheel is bolted to the torque converter then why would it matter if the nud on the TC is smaller than the crank hole. i gotta call the guy tomorrow and talk to him about it. still, he says its not a pilot bushing. i dunno.
    2004 Rubi, Poison Spyder Bumper with Trail Stinger. Warn M8000 winch, Rock Krawler X-factor long arm 4 inch lift, 35x12.50x15 BFG KM2s on Procomp 8 inch steelies, Tom Woods Driveshaft, Poison Syder Full Roll Cage, Tuff Designs rear bumper/Tire carrier, MetalCloak Arched Tube Fenders with 6 Inch Flares, Flowmaster Hushpower Muffler, Vanco Big Disk Brake upgrade, Line-X'd tub and cage.

  8. #8
    Senior Member HillBillE's Avatar
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    Could be they left a pilot bushing in the crank they installed, and it might not allow the converter to position right? Dunno, sounds funny to me.


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  9. #9
    That Guy afjeep's Avatar
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    they arent wanting to replace anything. he just wants me to check mine to see if it needs the bushing. so he says. he says that if the TC nub is smaller than the hole in the crank then i need the bushing or it will mess up the tran.
    2004 Rubi, Poison Spyder Bumper with Trail Stinger. Warn M8000 winch, Rock Krawler X-factor long arm 4 inch lift, 35x12.50x15 BFG KM2s on Procomp 8 inch steelies, Tom Woods Driveshaft, Poison Syder Full Roll Cage, Tuff Designs rear bumper/Tire carrier, MetalCloak Arched Tube Fenders with 6 Inch Flares, Flowmaster Hushpower Muffler, Vanco Big Disk Brake upgrade, Line-X'd tub and cage.

  10. #10
    Land Squid Jeffb_79's Avatar
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    Quote Originally Posted by afjeep View Post
    they arent wanting to replace anything. he just wants me to check mine to see if it needs the bushing. so he says. he says that if the TC nub is smaller than the hole in the crank then i need the bushing or it will mess up the tran.

    Remind him that he's the mechanic. If you knew what you were doing, you wouldn't be paying him $100 an hour to do it.
    Then remind him if he screws it up, he pays for it.

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