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Diff Drop??

Discussion in '5th Gen Builds (2010-2024)' started by ToyotaRDie, Aug 23, 2021.

  1. Aug 23, 2021 at 12:20 PM
    #1
    ToyotaRDie

    ToyotaRDie [OP] New Member

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    I installed Bilstein 5100, lifted 1.75 inches in front and 1.5 in back. Do I need a diff drop kit? ...and if don't need one but install one anyway, will help relieve stress on CV joint or will it damage something??
     
  2. Aug 23, 2021 at 12:23 PM
    #2
    Mtbpsych

    Mtbpsych New Member

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    Probably don’t need it, you can check your angles to verify.
     
  3. Aug 23, 2021 at 12:25 PM
    #3
    JET4

    JET4 New Member

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    shouldn't need one
     
  4. Aug 23, 2021 at 1:41 PM
    #4
    ToyotaRDie

    ToyotaRDie [OP] New Member

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    Thanks for your replies. How would I verify by looking at the angles though? That is the tricky part of my question.
     
  5. Aug 23, 2021 at 1:50 PM
    #5
    Mtbpsych

    Mtbpsych New Member

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    These are mine with a diff drop on a 3” lift. As long as they’re not horribly crooked you should be good.



    6A7C31D8-C974-4DFB-956D-97EEE758A8D3.jpg
     
  6. Aug 23, 2021 at 2:17 PM
    #6
    ToyotaRDie

    ToyotaRDie [OP] New Member

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  7. Aug 23, 2021 at 2:17 PM
    #7
    ToyotaRDie

    ToyotaRDie [OP] New Member

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    This is mine. What do you think? Straight enough?
     
  8. Aug 23, 2021 at 2:22 PM
    #8
    fajitas21

    fajitas21 New Member

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    Looks ok OP, can you back up another 3 feet and shoot again?
     
  9. Aug 23, 2021 at 2:23 PM
    #9
    fajitas21

    fajitas21 New Member

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    FYI if yours look anything like this, you're fine. This is pretty even for a 3" lift and I'd run it without a diff drop all day.
     
  10. Aug 23, 2021 at 2:36 PM
    #10
    ToyotaRDie

    ToyotaRDie [OP] New Member

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    This is from the front

    DA5B732D-6A63-4783-9C90-2709E1EBF848.jpg
     
  11. Aug 23, 2021 at 3:27 PM
    #11
    Dillusion

    Dillusion New Member

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    Its fine
     
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  12. Aug 23, 2021 at 3:53 PM
    #12
    ToyotaRDie

    ToyotaRDie [OP] New Member

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    Thank you. You're all great help!!
     
  13. Aug 25, 2021 at 8:31 AM
    #13
    Tuco S.

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    A diff drop isn't going to hurt anything with your lift height, but the real question is how much do they actually help? I suspect not very much based on limited experience. I installed one with my lift. When the fronts finally settled to just over +3.5" of lift after 3 months, the CVs still hated it. After I lowered the coil seats by 1/2" it now sits at +2.3" which is perfect. I'm not taking the diff drop out.

    You might want to upgrade the bump stops though.
     
    ToyotaRDie[OP] likes this.
  14. Aug 25, 2021 at 10:21 AM
    #14
    Dillusion

    Dillusion New Member

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    Anything above 3" the 4R usually is not happy.
     
  15. Jul 16, 2022 at 3:49 PM
    #15
    JK4RNew

    JK4RNew New Member

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    Hello all - new to the 4R world with a 2022 ORP. Just got a 3.5" lift without drop diff and trying to compare your photos with my current state

    Do I need a drop diff and will installing one require another alignment?

    upload_2022-7-16_15-45-43.jpgupload_2022-7-16_15-47-55.jpg
     
  16. Jul 17, 2022 at 4:58 PM
    #16
    hossler1788

    hossler1788 Turtle

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    ^ I'd say you need a diff drop kit
     
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  17. Jul 17, 2022 at 10:29 PM
    #17
    runnerjimmy

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    Looks pretty steep to me, during droop you may bind or tear.
     
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  18. Jul 21, 2022 at 3:59 PM
    #18
    hossler1788

    hossler1788 Turtle

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    What coils are those? Dobinson?
     
  19. Jul 21, 2022 at 4:03 PM
    #19
    JK4RNew

    JK4RNew New Member

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    Dobinson Lift & UAC 2.5" F, 1.5" R
    Yeah c59-302s (2.5")
     
  20. Jul 21, 2022 at 4:37 PM
    #20
    hossler1788

    hossler1788 Turtle

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    What front struts did you go with?
     
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  21. Jul 21, 2022 at 4:49 PM
    #21
    ChessGuy

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    Too many..... Performance: • Magnusum Supercharger • Gibson exhaust with dual black tip • Pedal Commander * PowerBrakes • Suspension – Old Man Emu BP-51 front and back with Medium load coils • Tires: AT3 Faulken Wildpeak – 285/70/17 • Wheels: Relations Race Wheels, RR7-H with -12 offset • Full roof rack and ladder by Westcott Design (removed the stock Yakima basket) • Molle storage panels by Rago fabrication • Front light brackets by Rago • Illuminator light bracket by Rago (roof rack location) Lights • Morimoto front and back with sequential signals • Morimoto fog lights and side mirrors with sequential signals • 40” Baja design light bar for roof rack • 20” S8 Baja design driving combo (winch location) • Squadron sport baja design ditch lights • S2 Chase lights by baja designs (mounted on roof) In the bay: • Odyssey 34-PC Battery • SDQH Aluminum billet battery terminals and bracket • Switch Pro 9100 with aluminum tray • Anytime front and back camera • ARB twin compressor Recovery & Protection: • Smittybilt X20 synthetic rope winch • Factor 55 fairlead and flatlink • Southern Style Off-road (SSO) low profile bumper • SSO stage 2 high clearance wings • Weekend warrior recovery kit by treaty oak • RCI – skid plates – entire vehicle + catalytic converter protection wings Interior: • Nano Ceramic IR – Avery Dennison Window tint – all windows • Several phone mounts • Upgraded Rear Hatch lift gate struts (ladder is heavy) • Boom blaster horn switch (featuring La cucaracha)
    I think you need one. The symmetry doesn't seem right per the picture. But then again, sometimes I don't even know what we are looking at. Mine has one.
     
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  22. Jul 21, 2022 at 9:39 PM
    #22
    shabbadel36

    shabbadel36 “We're Riding the Bus to Flavortown!” - Guy Fieri

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    I got the same setup but I did a 2.5in upfront due to the KDSS limitation. I did alignment with high degree caster and no problems. Since you went 3.5in, I think you need drop diff and alignment.
     
    JK4RNew[QUOTED] likes this.
  23. Jul 25, 2022 at 5:40 PM
    #23
    JK4RNew

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    Dobinson Lift & UAC 2.5" F, 1.5" R
    Thanks for your responses. Yeah Dobinsons sent the wrong Strut and Spring (extended strut adds 1" to 2.5" coil = 3.5" total lift). I have requested a change out to the IMS-574 extended strut with adjusted seat height of 213mm to add no additional height to the C59 springs (2.5" total lift height).

    @shabbadel36 - What did you get for your rear lift? I have the GS rear struts and 1.5" coil but the rear look much taller than stock(24.5" wheel center to fender).
     
  24. Jul 26, 2022 at 9:13 AM
    #24
    shabbadel36

    shabbadel36 “We're Riding the Bus to Flavortown!” - Guy Fieri

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    Here are my 4runner lift specs:
    Dobinsons 1" to 3.5" Lift Kit for Toyota 4Runner 2010-2021 - W/KDSS
    Front Springs: C59-302 - 2.5" Lift Stock Load, 2" w/150LBS Added Load
    Front Shocks: GS59-700 - Twin tube, fixed mount(not adjustable) suits 0-2.5" lift
    Rear Springs: C59-599 - Stock rear end, 1-1.25" lift
    Rear Shocks: GS59-701 - Twin Tube, suits 0-2" lift. Heavy Duty Valving

    JBA STD High Caster Upper A-arms for Toyota Tacoma "05" Plus, 4Runner "03" Plus, FJ Cruisers "07" Plus
     
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  25. Jul 26, 2022 at 11:19 AM
    #25
    Bikeric

    Bikeric New Member

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    Remember that the "Diff Drop" commonly sold is just 2 spacers and longer bolts for the front brackets only. Nobody ever drops the rear of the Diff, so the amount of actual "drop" will be 1/3 to 1/2 of what the spacer thickness is (geometry). Example lines are for a 1" spacer will yield 0.33" of actual drop at the CV's.

    [​IMG]
    [​IMG]
     
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  26. Mar 8, 2023 at 8:01 AM
    #26
    Chichox347

    Chichox347 4Runner Tanker

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    Hi all, I am new here. Refer to this information, hope is useful https://www.youtube.com/watch?v=47aat1tc6zw
     
  27. Aug 16, 2023 at 9:02 PM
    #27
    bassist

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  28. Aug 16, 2023 at 9:08 PM
    #28
    djwantke

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    Samesies, I gotta 3/2 lift with diff drop
    @ToyotaRDie
    A buddy with no diff drop in the above photo, my truck in the bottom photo. Like others said, yours looks fine with that size lift. JK4RNew not so much

    IMG_20230712_181903.jpg
     
    Last edited: Aug 16, 2023
  29. Aug 16, 2023 at 9:23 PM
    #29
    djwantke

    djwantke New Member

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