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Diff drop and carrier bearing drop.

Discussion in 'Suspension' started by Joeshaker, Oct 24, 2016.

  1. Oct 24, 2016 at 8:25 PM
    #1
    Joeshaker

    Joeshaker [OP] New Member

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    Amado
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    I'm in the process of putting a better lift on my truck. Currently have two inch spacers on top of the factory trd coilovers. Got the bilstein 6112 set up today on the top setting. I'll be installing them in the next couple days. I've got two diff drop kits. One has smaller billet spacers and slightly thinner bolts. The other has factory diameter bolts and larger spacers, but they are cheap plastic. Should I use either or find a better kit? On the rear I've got the 5160, put them on Sat and they are awesome. I've got Toytec shackles set at 1.5" lift. How much do I need to drop the carrier bearing? Amado
     
    Chuckm likes this.
  2. Oct 24, 2016 at 10:39 PM
    #2
    bobeast

    bobeast really old member

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    - Bull Bar - LED Bunny Burners - AMP retractable running boards - Headlight leveling retrofit - P3 Brake Controller - 60% rear seat delete - relocation of Sub to rear wall - Bilstein 5100 x4, top setting with 2 shims per side - Coach builder +2 rear shackles w/carrier bearing drop - Firestone Air bags - on-board compressor with auto-leveling - Dual Undercover Swing Boxes. - P285/65/R20 (34.6") BFG TA KO2's - TRD Front skid plate - Pop & Lock Tailgate lock - Remote Tailgate mod - LED Headlights - Nav Bypass - iPhone integration - Serius/XM retrofit - 25% front tint - Bizon electric tonneau cover - Power folding tow mirror upgrade - 2010+ leveling Headlight mod - Auto-fold mirror mod. - one-touch lane changer mod - Flash to open garage opener mod - Rigid H/L fog light upgrade - Pushbutton / Remote start mod.
    Why not use the billet spacers with the beefier bolts? (some drilling may be required). That said most of the "plastic" spacers I've seen are more than sufficient. For 1 ½ rear lift, you probably wan't about ¾ inch bearing drop spacers.
     
  3. Oct 24, 2016 at 10:46 PM
    #3
    Joeshaker

    Joeshaker [OP] New Member

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    I'm thinking about drilling out the hole in the billet spacers. Seems like it would be a pain in the ass to hold them, even in a vice. They're not very big around either, they look small. I think I'll try running the plastic ones for a while and see how they hold up. I was thinking 3/4 would be about right for the carrier bearing. Thanks
     
  4. Nov 20, 2016 at 5:51 PM
    #4
    xtyfighterx

    xtyfighterx New Member

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    I ordered a supreme suspension diff drop kit it's beefy and a coach builder carrier bearing drop believe it's 3/4 of a In thick
     
  5. Jan 17, 2017 at 2:27 PM
    #5
    joem1cha3l

    joem1cha3l New Member

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    Is carrier bearing and differential drop the same thing?
     
  6. Jan 17, 2017 at 2:30 PM
    #6
    Relentless

    Relentless Eric @Relentless Fab Vendor

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    No, diff drop is front, carrier bearing drop is for the center driveshaft support to the rear end.
     
  7. Jan 17, 2017 at 2:38 PM
    #7
    joem1cha3l

    joem1cha3l New Member

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    Eric
    Coachbuilder made me aware of this product so I'll be purchasing from him. I have some vibration when I'm coming to a stop. Think this will help with that or will it likely only help for acceleration vibration?
     
  8. Jan 17, 2017 at 4:14 PM
    #8
    joonbug

    joonbug bacon bastrd

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    The carrier bearing drop is just a spacer. I bought a 3/4" spacer from the hardware store for $2 and re-used the same bolt. IMG_1657.jpg
     
  9. Jan 17, 2017 at 4:34 PM
    #9
    Grey Wolf

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    My Tundra already had a diff drop. I could have purchased the same parts at ACE for maybe $10 instead of $30. (Don't pay more than $30 by the way) I have zero vibs with almost 3" OME lift in front and AAL + ToyTec shackles in rear FYI.
     
  10. Mar 2, 2017 at 6:13 AM
    #10
    Zackmo47

    Zackmo47 New Member

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    What are the dimensions. I was going to pay $25 for coach builders shipped but 5-10 sound smuch. Better local orange place has spacers for $.97 if under 3/4" are the stock bolts long enough ?
     
  11. Mar 2, 2017 at 6:14 AM
    #11
    joem1cha3l

    joem1cha3l New Member

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    Stock bolts can be reused
     
  12. Mar 2, 2017 at 6:17 AM
    #12
    Zackmo47

    Zackmo47 New Member

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    Any idea bolt diameter?
     
  13. Mar 2, 2017 at 6:23 AM
    #13
    joem1cha3l

    joem1cha3l New Member

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    That I don't recall, sorry
     
  14. Mar 2, 2017 at 6:24 AM
    #14
    Zackmo47

    Zackmo47 New Member

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    No problem thank you I'll remove one and measure and reinstall so I can have the right inner diameter.
     
  15. Mar 2, 2017 at 6:48 AM
    #15
    jberry813

    jberry813 The Mad Scientist Staff Member

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    I highly recommend you actual measure and determine if you need a CB drop and how long rather than just assuming. It takes 5 minutes with an angle finder. The other thing to keep in mind with a CB drop, is while you might be getting the second two u-joints properly phased, but the lower you drop the CB, the more out of spec you put the u-joint on the xfer case flange.

    https://www.youtube.com/watch?v=f1m-Fh5kiRU&sns=em


    Also diff drops don't do anything on second/third gen except move the oil away from the pinion bearing. Seriously, it does nothing. Your cv angles are the same with and without the drop.
     
    Help, Boudin, Spolar and 3 others like this.
  16. Mar 2, 2017 at 6:55 AM
    #16
    TTU19

    TTU19 Wreck 'Em

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    I had never heard of a Carrier Bearing before yesterday. My wife had her '16 Tacoma lifted at the dealership when she bought it and apparently they didn't adjust the carrier bearing and it started making a noise when she'd accelerate from a complete stop. They "fixed" it and so far today it hasn't done it.
     
  17. Mar 2, 2017 at 6:57 AM
    #17
    joem1cha3l

    joem1cha3l New Member

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    Yep mine made a bad vibration and noise at start and stop. Almost felt like warped rotors. I knew it wasn't that, but that's what it felt like prior to the carrier bearing drop.
     
    TTU19 likes this.
  18. Mar 2, 2017 at 7:37 AM
    #18
    louscrw

    louscrw all jacked up on Mt. Dew

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    in signature
    great info / clarification
     
  19. Mar 2, 2017 at 10:46 AM
    #19
    Medic

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    Might the smaller billet spacers be for the skid plate? Last diff drop that I installed also came with spacers to lower the skid plate. Just a thought
     
  20. Mar 2, 2017 at 3:25 PM
    #20
    Joeshaker

    Joeshaker [OP] New Member

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    No, the ones for the skid plate are way smaller. I picked up a good one from Toytec. Installed it several months ago, no issues.
     
  21. Oct 11, 2018 at 6:00 AM
    #21
    Yota18

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    Do you know what size drop you have. I see 3/4 or 1 1/4 seem to be the average. I have the oem lift with 34’s so about 4” I’d lift I’m thinking going with the 3/4
     
  22. Oct 11, 2018 at 6:39 AM
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    Grey Wolf

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  23. Oct 11, 2018 at 7:49 AM
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    Yota18

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  24. Oct 11, 2018 at 8:45 AM
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    Grey Wolf

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    Haha...No I have no need for the carrier bearing drop with my current setup.
     
  25. Oct 11, 2018 at 8:51 AM
    #25
    Big J

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    Interesting point! I always thought the diff drop moved the entire thing down an inch or so. Is that not how they work?

    Got some pics anyone?
     

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