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Anyone who is running OME Dakar rear leaf spring.... Need Advise

Discussion in '1st Gen. Tacomas (1995-2004)' started by 043RZ, Sep 25, 2017.

  1. Sep 25, 2017 at 12:06 PM
    #21
    043RZ

    043RZ [OP] Well-Known Member

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    Matt
    Spring Grove, PA
    Vehicle:
    2004 Tacoma SR5
    6" Fabtech Lift, OME Dakar leaf springs, BudBuilt Traction Bar, 15" American Racing Wheels, 5.29 Nitro Gears, 35" BFGs AT, Pioneer 200 Watt Stereo, 6x8 Pioneer speakers, Raised Front and Rear Diff Breathers, Deck Plate Mod, Red Interior Underglow, Red Exterior Underglow, Cool White LED Rock Lights,
    I'm running a fabtech lift tho...
     
  2. Sep 25, 2017 at 12:06 PM
    #22
    EatSleepTacos

    EatSleepTacos Well-Known Member

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    Ahhh, gotcha. These probably wouldn't clear then. Good luck with that one.
     
  3. Sep 25, 2017 at 12:13 PM
    #23
    043RZ

    043RZ [OP] Well-Known Member

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    Matt
    Spring Grove, PA
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    2004 Tacoma SR5
    6" Fabtech Lift, OME Dakar leaf springs, BudBuilt Traction Bar, 15" American Racing Wheels, 5.29 Nitro Gears, 35" BFGs AT, Pioneer 200 Watt Stereo, 6x8 Pioneer speakers, Raised Front and Rear Diff Breathers, Deck Plate Mod, Red Interior Underglow, Red Exterior Underglow, Cool White LED Rock Lights,
    Thanks for the offer tho
     
  4. Sep 25, 2017 at 1:09 PM
    #24
    drr

    drr Primary Prognosticator

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    It sounds like your tires are already suspect, and your driveline angles may be out of spec. Those are the two most common sources of vibrations.

    The carrier bearing drop is a quick and dirty way of diagnosing a driveline vibration, and will cause more harm than good over the long run. The reason is because the angle of the u joint at the transfer case has nothing to cancel it, so anything more than about 1/2 of a degree will induce a vibration, and will eventually wear out the u joint. I would remove your cb drop and check your driveshaft angles.

    It also sounds like you may have a tire out of round. I would definitely recommend swapping 4 known well-balanced wheels and tires of any size onto your truck and do a road test.
     
  5. Sep 25, 2017 at 1:31 PM
    #25
    cruxofthebisquit

    cruxofthebisquit Well-Known Member

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    OME and worth every penny.
    It's not your spring. 2 yrs. sounds about right for something else affected by the lift to wear out though.
     
    043RZ[OP] likes this.
  6. Sep 25, 2017 at 2:00 PM
    #26
    043RZ

    043RZ [OP] Well-Known Member

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    Matt
    Spring Grove, PA
    Vehicle:
    2004 Tacoma SR5
    6" Fabtech Lift, OME Dakar leaf springs, BudBuilt Traction Bar, 15" American Racing Wheels, 5.29 Nitro Gears, 35" BFGs AT, Pioneer 200 Watt Stereo, 6x8 Pioneer speakers, Raised Front and Rear Diff Breathers, Deck Plate Mod, Red Interior Underglow, Red Exterior Underglow, Cool White LED Rock Lights,
    This vibration feels more like a wheel/tire vibration then a driveshaft vibration. A driveshaft spinning at 3000 rpm has a much higher frequency then a tire spinning at 250 - 300rpm (don't quote me on actual tire rpm, I just know it spins slower then a driveshaft). This vibration (or should say bounce) is to low a frequency to be considered driveshaft related. I am running a shims for the rear axle pinion angle as well.
     
  7. Sep 25, 2017 at 2:02 PM
    #27
    043RZ

    043RZ [OP] Well-Known Member

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    Matt
    Spring Grove, PA
    Vehicle:
    2004 Tacoma SR5
    6" Fabtech Lift, OME Dakar leaf springs, BudBuilt Traction Bar, 15" American Racing Wheels, 5.29 Nitro Gears, 35" BFGs AT, Pioneer 200 Watt Stereo, 6x8 Pioneer speakers, Raised Front and Rear Diff Breathers, Deck Plate Mod, Red Interior Underglow, Red Exterior Underglow, Cool White LED Rock Lights,
    Does anyone else here have experience with BF Goodrich besides drew12 with balancing problems with this make/brand tire?
     
  8. Sep 26, 2017 at 4:05 PM
    #28
    043RZ

    043RZ [OP] Well-Known Member

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    Matt
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    2004 Tacoma SR5
    6" Fabtech Lift, OME Dakar leaf springs, BudBuilt Traction Bar, 15" American Racing Wheels, 5.29 Nitro Gears, 35" BFGs AT, Pioneer 200 Watt Stereo, 6x8 Pioneer speakers, Raised Front and Rear Diff Breathers, Deck Plate Mod, Red Interior Underglow, Red Exterior Underglow, Cool White LED Rock Lights,
    I will be making an appointment with Mar-Bar tire sometime this week. I'm convinced I have a tire thats just in spec enough to not be considered bad. Drove home from OC today and the bouncing seams to be most on the driver side. I'll let you guys know what the results are
     
  9. Sep 26, 2017 at 4:47 PM
    #29
    frizzman

    frizzman Well-Known Member

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    OME 2.5,Tundra 17s,Falken Wildpeak AT3W hitch w/ 7-pin, ARE cap, JVC HU w/BT, HID/LED lights
    two questions I have:

    1. are your wheels spec'd for Toyota hub size (106.25 mm) or generic 6-bolt on 139.7 mm(5.5") (108 mm)?

    2. have you switched the sides on the rear wheels and seen if either side bounces more?
     
  10. Sep 26, 2017 at 6:16 PM
    #30
    drr

    drr Primary Prognosticator

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    If you have stock gears, the ratio of driveshaft speed to tire speed is 4.10:1. If you have 31" tires, at 60 mph your tires are doing about 672 rpm, so your driveshaft is doing ~2750 rpm.
    You are correct, the driveshaft vibration will have a higher frequency, but it may not be as noticeably different than you think. I wouldn't necessarily discount it, but definitely start by checking your tires as they seem to be the most likely culprit.
     
  11. Sep 30, 2017 at 5:58 AM
    #31
    043RZ

    043RZ [OP] Well-Known Member

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    Matt
    Spring Grove, PA
    Vehicle:
    2004 Tacoma SR5
    6" Fabtech Lift, OME Dakar leaf springs, BudBuilt Traction Bar, 15" American Racing Wheels, 5.29 Nitro Gears, 35" BFGs AT, Pioneer 200 Watt Stereo, 6x8 Pioneer speakers, Raised Front and Rear Diff Breathers, Deck Plate Mod, Red Interior Underglow, Red Exterior Underglow, Cool White LED Rock Lights,
    My wheels are not toyota hub specific (hubcentric). I want to say they are 108mm. There american racing AR-23's wheels. However I thought about this issue as well and bought a set of hubcentric rings that fit over the axle hub. Result... No difference.

    I have switched sides. Matter of fact when I last had my tires balanced. I told them to just balance them, do not rotate because I rotate them myself to save money. After they balanced them the tech said he had to move one tire from the front to the rear saying that it was more out of balance them the rest. He showed me the results of the balance and showed me which tires he switched. Driving home I noticed the rear bouncing more then usual. I moved them back to where I had them and the bounce feels more concentrated to the drivers side of the truck now. So I believe I have at least narrowed it down to at least one if not two tires on the drivers side.

    Also a side note. You know how when all terrain or mud tires run down the road, they make a rythmatic pulsating sound as they rotate against the payment. Ex. (Wawawawawa). Well, as mine make that rythmatic sound, the bounce matches the sound. If that makes sense
     
  12. Sep 30, 2017 at 6:03 AM
    #32
    043RZ

    043RZ [OP] Well-Known Member

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    6" Fabtech Lift, OME Dakar leaf springs, BudBuilt Traction Bar, 15" American Racing Wheels, 5.29 Nitro Gears, 35" BFGs AT, Pioneer 200 Watt Stereo, 6x8 Pioneer speakers, Raised Front and Rear Diff Breathers, Deck Plate Mod, Red Interior Underglow, Red Exterior Underglow, Cool White LED Rock Lights,
    I see. I'm currently running 5.29 ratio on 35" tires. It just doesn't feel like a driveshaft bounce. But I won't dismiss this. My cousin has a gopro camera that I may hook up under the truck and focus on the driveshaft as it rotates. Better yet the support bearing due to it being rubber.
     
  13. Sep 30, 2017 at 8:03 AM
    #33
    lucky13don

    lucky13don Well-Known Member

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    Rotate the wheels.see if the front gets the bounce. That'll rule out the tires if it doesn't. Cheap and easy..
     
  14. Sep 30, 2017 at 8:14 AM
    #34
    frizzman

    frizzman Well-Known Member

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    o_O

    two posts ago he just said the wheels were switched.
     
  15. Sep 30, 2017 at 9:42 AM
    #35
    labrador01

    labrador01 Well-Known Member

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    I ran BFG ko2 while I was working at Discount Tire Co., always had 1 tire that required x2 the amount of weight as the rest. However, even with that being said...those tires rode better than any other set of tires I had on this truck. (5th set) How are the tires worn? Any bad wear?
     
  16. Sep 30, 2017 at 9:50 AM
    #36
    btu44

    btu44 Well-Known Member

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    04 Tacoma Double Cab, 4WD, TRD Off-Road
    SC with 7th injector. ICON 2.5 shocks and coil overs, SPC UCA, EMU Dakar rear springs. FrontRunner bed rack. ICOM IC7100 amateur transceiver
    If possible have someone follow you at the speed your having the vibration. They maybe able to see witch tire is shaking.
    What I have noticed is out of balance tires have a fairly consistent shake. Shocks cause a shake after a sharp edge bump that dampens out slowly.

    I have DAKAR springs and ICON 2.5 rear shocks that gave an extra 3/4" of lift and I have no drive shaft vibration. My rear view mirror is vibration free at all speeds and I still have the original drive shaft center bearing.
     
  17. Sep 30, 2017 at 9:56 AM
    #37
    fxntime

    fxntime Well-Known Member

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    You say your bed is bouncing, make sure the bed bolts are tightened down, there have been plenty of posts where they are loose and no one checks then, they go right to the suspension looking for the issue.
     
    043RZ[OP] likes this.
  18. Sep 30, 2017 at 4:27 PM
    #38
    043RZ

    043RZ [OP] Well-Known Member

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    Matt
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    2004 Tacoma SR5
    6" Fabtech Lift, OME Dakar leaf springs, BudBuilt Traction Bar, 15" American Racing Wheels, 5.29 Nitro Gears, 35" BFGs AT, Pioneer 200 Watt Stereo, 6x8 Pioneer speakers, Raised Front and Rear Diff Breathers, Deck Plate Mod, Red Interior Underglow, Red Exterior Underglow, Cool White LED Rock Lights,
    There not wearing badly. There not cupped or noisy. I like them all besides the balancing issue.
     

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