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Just fixed driveline vibration!!!For free!

Discussion in '2nd Gen. Tacomas' started by hvacbmac, Apr 21, 2011.

  1. Apr 21, 2011 at 9:59 PM
    #1
    hvacbmac

    hvacbmac [OP] Member

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    After lifting my truck about 2" in the rear (over stock non-TSB) and adding 2.5" in the front, I had a bad driveline vibration. A shudder off the line and a varying mild to bad vibration 53-61 mph and again around 70 mph. I installed the 3 degree shims with lift in the rear, but had the above vibrations. I then tried dropping the carrier bearing 1/2", it didn't change much of anything. Then I removed the rear 3 degree shims. Vibration stayed but I got a low humm from the extreme u-joint angles at almost all speeds. After some thinking I picked up a degree finder to check actual angles of shafts and joints. I found the trans @ 1.7 deg. down, front shaft @ 8.7 deg down, rear shaft @ 8.7 deg down and pinion @ 4.8 deg. up with carrier shimmed down and no rear shims. After checking things over I realized Toyota engineers failed driveline 101. The ideal ujiont angle is less than 3 deg. so take the mating driveline angles and subtract to figure ujoint angle. The trans was much more even without dropping carrier and is'nt affected by lift.So long story short visit spicer site http://www2.dana.com/pdf/J3311-1-DSSP.pdf. After some figuring I got mine closer to ideal without buying a thing, I found that the ring around the carrier bearing isn't concentric and if rotated 180 deg. it raises the carrier about 1/2". So I flipped the carrier bearing ditched the carrier spacer shims that I got with lift and have the rear 3 deg. shims on rear. Now pinion angle is close to first shaft angle per Dana/Spicer and all ujoint angles are very close or less than 3 deg. I still need to fab a trans. mount to lower the trans. a hair but all vibrations are gone. For any of you having a vibration problem give this a try who knows the select few that haven't had a problem may have had the bearing installed this way accidentally from the factory!
     
  2. Apr 22, 2011 at 1:37 AM
    #2
    maxamillion2345

    maxamillion2345 Go home if you don't like guns liquor and whores.

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    Interesting, like to see what others have to say here. May just have to try it.

    Thanks for the info.
     
  3. Apr 22, 2011 at 2:18 AM
    #3
    hamNswiss on rye

    hamNswiss on rye ¡Yo Quiero Taco World!

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  4. Apr 22, 2011 at 4:22 AM
    #4
    jackwithcorona

    jackwithcorona Well-Known Member

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  5. Apr 22, 2011 at 4:24 AM
    #5
    crf69

    crf69 scraping my emblems off my plasti-dip

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    ummm yeah
    Subbed.....even tho i have none of dem vibrations
     
  6. Apr 22, 2011 at 4:28 AM
    #6
    JonnyBb

    JonnyBb I have to return some videotapes

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    subbed for future reference
     
  7. Apr 22, 2011 at 4:58 AM
    #7
    blkbelt42

    blkbelt42 Well-Known Member

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    is this happening only on certain years or??
     
  8. Apr 22, 2011 at 6:19 AM
    #8
    antatich

    antatich Well-Known Member

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    Finally somebody smarter than me has figured this out. I have all the same problems as you do with the same style lift and tried everything. Where did you get the shims?
     
  9. Apr 22, 2011 at 11:59 AM
    #9
    crf69

    crf69 scraping my emblems off my plasti-dip

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    ummm yeah
    too broad to answer
     
  10. Apr 22, 2011 at 10:29 PM
    #10
    hvacbmac

    hvacbmac [OP] Member

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    I got the 3 deg. shims from toytech.
     
  11. Apr 22, 2011 at 10:32 PM
    #11
    hvacbmac

    hvacbmac [OP] Member

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    It seems to happen on a select bunch of the 2nd Gen. double cabs mostly, not aware of any reasons why some are affected more than others.
     
  12. Apr 22, 2011 at 10:44 PM
    #12
    hvacbmac

    hvacbmac [OP] Member

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    Just wanted to get a little bit deeper into the double shaft dana/spicer specs. On my double cab taco ideally the trans mount still should be lower than what I have done so far and after doing so the carrier bearing should be lowered slightly to make the angles all within dana/spicer specs. but for now I'm happy without major mods. And by the way I have had and loved many Toyotas, and have taken their share of abuse. But I thought it funny as i was staring the spicer sticker on the driveshaft in the eye that toyota can have a company manufacture a shaft for them but not get the angles to specs.!!! Many hours of their time and ours have been spent trying to cure vibration problems on these trucks and this seems to be only one of the causes depending on the truck.
     
  13. Apr 23, 2011 at 5:45 AM
    #13
    qnyla

    qnyla Well-Known Member

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    Interesting. And this was with a 2" lift in the rear and 2.5" lift in front?

    You raised the carrier bearing (by rotating it 180) and used the 3 degree shims in the rear... ...interesting.
     
  14. Apr 23, 2011 at 7:52 PM
    #14
    nighthawk87

    nighthawk87 Well-Known Member

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    Good job man. If I take the angles of mine, would be able to tell me what to do.
     
  15. Apr 23, 2011 at 9:14 PM
    #15
    GeoTaco1

    GeoTaco1 Well-Known Member

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  16. Apr 23, 2011 at 9:32 PM
    #16
    A7XTaco

    A7XTaco Member

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  17. Apr 23, 2011 at 9:37 PM
    #17
    Foihdzas

    Foihdzas What is hummingbird?

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    <subbed for reference> Thanks for all the 'foot work' you put into this!
     
  18. Apr 23, 2011 at 10:38 PM
    #18
    ETaco23

    ETaco23 Marshall offroad Fabrication

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    huh.... im ganna have to try this sometime.... I have a annoying vibe/shudder around 45-50mph... Its not that bad, but it can be annoying.
     
  19. Apr 23, 2011 at 11:50 PM
    #19
    hvacbmac

    hvacbmac [OP] Member

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    Toytech 2.5" lift adjustable front, TSB rear springs, Underdog racing shifter
    Yep I have the rear spring TSB wich raises the rear a little over stock plus the rear add-a-leaf for the lift. Just got back home from a trip down I-5 and hit anywhere form 0-78 mph no driveline shake except for the slight shudder @ 0-7 mph that I need to work on w/ trans mount. Long road trips will be much better, hope this solves a few of your guys' problems!
     
  20. Apr 27, 2011 at 8:49 PM
    #20
    ShaneHD

    ShaneHD Taco Tuesday

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    Question for you. Did this noise occur above 45mph and would go away almost instantly after letting off the gas?
     

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