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Could a bad U-joint do this?

Discussion in 'The Hokey Ass Message Board' started by bonez, Oct 5, 2012.

  1. bonez
    Joined: Jul 16, 2007
    Posts: 3,487

    bonez
    Member
    from Slow lane

    My life? what the hell.
    You hoodlums are gettin softer by the minute ah? ;)

    New shaft is balanced. I went to the "driveshaft shop" and asked a few question b4 doin the job.
    Now, we determined that a worn joint could cause a bad vibration, but...
    ..can the pinion angle cause a bad vibration to the ujoint as well?
     
  2. 2OLD2FAST
    Joined: Feb 3, 2010
    Posts: 5,263

    2OLD2FAST
    Member
    from illinois

    Sure , a SEVERE angle could cause vibration , can't you put the car up on a GOOD set of stands , then run it & observe??
    dave
     
  3. ryno
    Joined: Oct 6, 2005
    Posts: 3,470

    ryno
    Member

    Absolutely, a bad angle will mess shit up quickly. Did you actually balance the whole shaft wince you replace the parts and pieced it back together ?
    maybe do it in reverse too,you know to take off milage.
    I would not recommend doing this
    First off danger,second it will not have a load on it anyways

    Do you have a angle degree finder? If so jack it up and set it at desired ride height. Check you angles at the rear yoke,carrier bearing and your output.

    Post a pic too if you can.
    What kind of stock arms did you use,what car is this?
     
  4. spiders web
    Joined: Jan 16, 2011
    Posts: 387

    spiders web
    Member

    Are we sure the driveline is not too long? May be binding at the ends and could really mess you up if not proper. Should have 3/4 of an inch at ride and load bearing height.
     
  5. EdselRich
    Joined: Oct 12, 2007
    Posts: 287

    EdselRich
    Member

    I see the garage scene from "Ferris Beullers day off" in my head

    Sent from my DROID device using the TJJ mobile app
     
  6. manyolcars
    Joined: Mar 30, 2001
    Posts: 9,193

    manyolcars

    the driveshaft shop asked me, "Where do you think the metal goes when it is dented?"
    uummm.....,off center? out of round? no longer in balance?
     
  7. 2OLD2FAST
    Joined: Feb 3, 2010
    Posts: 5,263

    2OLD2FAST
    Member
    from illinois

    Seriously!!!! You're afraid to run a car up on stands????

    sheeesh!!!

    dave
     
  8. bonez
    Joined: Jul 16, 2007
    Posts: 3,487

    bonez
    Member
    from Slow lane

    -The drivshaft that was beat up was the one i removed...
    -The shop told me these dont need balancing unless cut etc...
    -The car runs smooth without vibrations at all heights, (not from the d-shaft at least lol) it starts a self destruction noise only when the rear is about 2" from the ground.
    -The car is a domestic (euro) 70 Ford, pretty similar to a MII or Pinto driveline.
    -It has its stock triangulated arms, but its step notched, and lays in the back, it about 3"&1/2 lower than if it was suspensionless on stock subframe.
    -dont worry, wont jack it and crawl under it while it runs! :)
    -gonna try drive it over something with some boards then jack the back and support it somehow. Not gonna be easy.
    -last thing. Before swappin the carrier bearing rubber i could drive layed out without problems. The rubber was torn, so i tnink it allowed the shaft to take a bigger angle. Possible? Should i fuck it all up again LOL
     
  9. bonez
    Joined: Jul 16, 2007
    Posts: 3,487

    bonez
    Member
    from Slow lane

    Just a note. The thread is about drive line/pinion angle, not my o/t ride.
     
  10. EdselRich
    Joined: Oct 12, 2007
    Posts: 287

    EdselRich
    Member

    Haha. It was just the first thing that came to mind. Seeing him kicking the Ferrari til it eventually sailed out the window!

    Sent from my DROID device using the TJJ mobile app
     

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