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the vibration hunt

Discussion in 'The Garage' started by johnathan, Sep 26, 2005.

  1. johnathan

    johnathan 1/2 ton status

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    I'm getting a grinding vibration 50mph & up .I've had this vib. for a while I've changed the driveshaft,swapped rearend so I'm guessing it would be transfer case maybe,np208.Has anyone ever had this problem?
     
  2. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    whats the angle on your driveshaft and pinion? what type of shaft? what size joints? is your 208 slip yoke? need more info...

    j
     
  3. johnathan

    johnathan 1/2 ton status

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    yeah 208 is slip yoke ,1310 in front of shaft 1350 in rear, no lift, don't know the angle of shaft ,I did'nt suspect that since it should still be stock
     
  4. johnathan

    johnathan 1/2 ton status

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    one piece shaft
     
  5. jekbrown

    jekbrown I am CK5 Premium Member GMOTM Winner Author

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    how recently was the shaft balanced? new joints?

    j
     
  6. johnathan

    johnathan 1/2 ton status

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    i swaped in a new shaft because the old one was just worn out. joints are new.I had the same exact vibe same speed with the old shaft.i never had the new one balanced ,it is used ,from newer blazer.there is a little play at the slip yoke.
     
  7. K5Steve

    K5Steve 1/2 ton status

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    How long is the d shaft?My slip yoke was sticking out of the t case about 2 inches more than it should've been.It is being lengthened from 29 1/2"
    to 31 1/4".My pinion yoke was shot,bought a new one,my slip yoke was worn,bought a new one,and had my d shaft balanced with new spicer joints.It was still vibing,just not as bad.I'm hoping the lengthening works,I also had play in the slip yoke.
     
  8. Pow06er

    Pow06er 1/2 ton status

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    did the lengthening work?
     
  9. K5Steve

    K5Steve 1/2 ton status

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    It worked for me a little,most of my vibes were coming from the exploded gov lok in the rear end.Doesn't vibe now.
     
  10. Pow06er

    Pow06er 1/2 ton status

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    mine is sticking out about 3.25" so i think im in the need of a lengthening
     
  11. johnathan

    johnathan 1/2 ton status

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    after the shackle flip lift with new cv shaft no more vibes :D had to shim 4degrees
     
  12. K5Steve

    K5Steve 1/2 ton status

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    Sweet,I need to redo the lift on my truck,blocks.I hope to get rid of the axle wrap afterwards.
     

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