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New 5100's....have dreaded rumbling noises

Discussion in 'Suspension' started by 69z28, Mar 28, 2010.

  1. Mar 28, 2010 at 10:35 PM
    #1
    69z28

    69z28 [OP] Hell bent for leather

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    I just wanted to share this with other potential 5100 buyers out there. I recently upgraded to 265/70/17 tires on new 17x9 wheels, and there was no
    change in the behavior of the truck at all. Three weeks later I added 5100's
    to the front set at the 1.75" height and upon leaving the shop heard rumbling
    noises I had never heard before. The noise occurs between 20 and 40 mph and dissipates over and under those numbers( no vibes though). At highway speeds it is not heard and when put into four wheel drive it is not heard. The posts here say that it is the front differential bearings. I am sure others have read this same thing , so just a word of caution to think twice about lifting your truck.......coming from another victim of truck lifting disease! I like the look
    so much, though, I don't think I can go back!

    2006 Double cab sport 4x4, long bed.
     
  2. Mar 28, 2010 at 11:31 PM
    #2
    OZ-T

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

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    Try the diff drop ?

    OZ
     
  3. Mar 29, 2010 at 8:51 AM
    #3
    69z28

    69z28 [OP] Hell bent for leather

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    Hey oz.....what does the diff drop entail exactly?
     
  4. Mar 29, 2010 at 10:23 AM
    #4
    Janster

    Janster Old & Forgetful

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    Odd, but adding 5100's shouldn't be the 'cause' of that.

    The shop installed them? Did you inspect their work? Did you poke your head around and look for obvious things wrong?

    Did you inspect your wheels for any missing wheel weights? Perhaps one fell off while they were installnig things.

    What backspacing are you running on those 17x9 wheels?
     
  5. Mar 29, 2010 at 10:36 AM
    #5
    headhunter247

    headhunter247 Well-Known Member

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    Bilstein 5100's all around, front set at 2.5", Toytec AAL, 265/75/16 Duratracs, Pro Comp 5001, Weathertech's, AVS In Channel Visors, Nokya Hyper Yellow fogs, CB Set up, Color matched grill surround, ATC Camper Shell with Yakima Racks, SOS Concepts Regular Rear Bumper.
  6. Mar 29, 2010 at 5:54 PM
    #6
    OZ-T

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

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    The diff drop is usually only needed / used when lifting the front over 2.5 " , but I was wondering , did you get an alignment after the billy install ?

    OZ
     
  7. Mar 29, 2010 at 6:38 PM
    #7
    69z28

    69z28 [OP] Hell bent for leather

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    Yeah, the alignment was done when they were installed.
     
  8. Mar 29, 2010 at 8:33 PM
    #8
    regcab4x4

    regcab4x4 Well-Known Member

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    I just had the allignment done on my truck today after installing the 5100's and 265/75/16's. I don't know who did your allignment but appearently it is impossible to get it into proper spec without new UCA's, I witnessed this with my own eyes since the service tech brought me back to show me... either your camber or castor are probably way off, I had to find an exceptable medium... that and the tow was way off but corrected. You may want to look into that.

    I'm a noob though so this may be old info, jut passing it along.
    Good luck!
     
  9. Mar 29, 2010 at 8:40 PM
    #9
    Anthony

    Anthony San Antonio Detailer :)

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    check the sway bar mounts on the spindle. if someones not paying attention (like me) the entire assembly sometimes moves when you tighten the nut and you need to use an open end wrench and put a 6mm allen head on the bolt to keep it from moving.

    when those are look it makes racket and you can feel in the floorboard.
     
  10. Mar 29, 2010 at 8:45 PM
    #10
    regcab4x4

    regcab4x4 Well-Known Member

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    Oops... Correction- my billies are at 2.5 so the mentioned allignment issues may not apply to you.
     
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