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Diff drop vibes

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Nelz1, Aug 23, 2011.

  1. Aug 23, 2011 at 8:22 AM
    #1
    Nelz1

    Nelz1 [OP] Well-Known Member

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    I leveled my Tacoma with the Bilstein 5100's the front end CVs where crying when I turned the wheel (when moving slowly) So I installed the toytec 1 inch diff drop and my bad CV vibration went away but now have a new slight vibration in the steering wheel:confused:?
    Can the one inch diff drop be to much I'm thinking of trimming the spacer to 3/4 inch to troubleshooyt?? Anyone ever run into this?
    Could I be dropping to much?
     
  2. Aug 23, 2011 at 8:35 AM
    #2
    mjp2

    mjp2 Living vicariously though myself Moderator

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    Remove the differential drop. On the 05+ Tacomas it does far less than you might think it does.

    The math:
    The graph (from the same thread)
    [​IMG]

    You're rotating your front differential more than you're dropping it, which can cause vibrations from the increased front driveshaft u-joint angles and internal lubrication issues as the oil is shifted away from the rear of the housing where the pinion is.
     
  3. Aug 23, 2011 at 9:06 AM
    #3
    Nelz1

    Nelz1 [OP] Well-Known Member

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    Without the diffrop the vibration was aweful you could feel the CVs binding at low speed turns but the diff drop remedied that but its the new very light vibe I have after dropping the diff that I'm trying to resolve- pitching the diff back is scary when you say oil isnt getting to where it should be..
    Thanks for your reply!
     
  4. Aug 23, 2011 at 9:15 AM
    #4
    mjp2

    mjp2 Living vicariously though myself Moderator

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    Got any pics of your CVs at ride height? What setting are you using on your 5100s?
     
  5. Aug 23, 2011 at 9:23 AM
    #5
    Nelz1

    Nelz1 [OP] Well-Known Member

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    I dont have photos (I should have measured but pre and post front lift but I did not)
    I leveled it so I think it was .85 setting-- before I cut the spacer down to say 3/4 inches I might do a temporary spacer and see if its the fix (perhaps a 3'4" stack of fender washers?)

    Nelson
     
  6. Aug 23, 2011 at 9:26 AM
    #6
    OZ-T

    OZ-T Quite an experience to live in fear , isn't it ?

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    Wah ?

    Shouldn't be CV issues at .85
     
  7. Aug 23, 2011 at 9:43 AM
    #7
    mjp2

    mjp2 Living vicariously though myself Moderator

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    Exactly what I'm thinking. CVs might be dry or something else could be wrong.
     
  8. Aug 23, 2011 at 10:20 AM
    #8
    Nelz1

    Nelz1 [OP] Well-Known Member

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    Thanks for all the input!!

    Nelson
     
  9. Aug 23, 2011 at 10:21 AM
    #9
    OZ-T

    OZ-T Quite an experience to live in fear , isn't it ?

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    How did you pinpoint your noise to the CV's , something else could be binding up
     
  10. Aug 23, 2011 at 11:45 AM
    #10
    Nelz1

    Nelz1 [OP] Well-Known Member

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    This is what happened- drove fine -5100 went in still felt good no vibes unless turning slow the cv's were making vibration when I put the diff drop in no more cv turning vibration now since the diff drop I have a slight vibration in the steering wheel,,,I really thing 1 inch is to much for a spacer and that there is a fine line were I can make it all right-
     
  11. Aug 23, 2011 at 11:54 AM
    #11
    OZ-T

    OZ-T Quite an experience to live in fear , isn't it ?

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    Mag Grey 09 Trd Sport DCLB 4x4
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    I'm not doubting you , just saying it would be hard to pinpoint exactly where the noise / vibes are coming from when you are in the cab .


    CV issues with only a .85 lift is uncommon
     
  12. Aug 26, 2011 at 3:59 AM
    #12
    Nelz1

    Nelz1 [OP] Well-Known Member

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    07 Tacoma DC TRD
    Bilstein 5100 leveled bed panels fabricated, bed d rings, fog light mod.
    I believe the CV shaft is straight 0 degrees from diff to hub (does anyone have any input on this)
    I went to dealer and measured a new Tacoma on what looked like a flat surface to be 0 degrees. My trucks passengers side CV shaft seems angled up about 10 degrees? drivers side is at zero.
    So I plan to remeasure but has anyone measure the shaft angle for pitch prior to lift install?
     
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