1. Welcome to Tundras.com!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tundra discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Tundra owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

When is a diff drop needed?

Discussion in 'Suspension' started by ChadGrissom, Mar 19, 2017.

  1. Mar 19, 2017 at 4:48 PM
    #1
    ChadGrissom

    ChadGrissom [OP] New Member

    Joined:
    Mar 16, 2017
    Member:
    #6811
    Messages:
    30
    Gender:
    Male
    Vehicle:
    2012 Texas Edition Crewmax
    Bilstein 5100 front (Level) and back, K&N Ram Air Intake, Flowmaster Cat back dual, Toyo 295/65R20 on XD Misfit 20X9
    Hey all, so I have a 2.5" level with 5100s, currently I'm running Toyo OC 295/65R20's on XD Misfit 20x9's with a 0 offset, here shortly I'm going to have the body mounts chopped and capped with Relentless Offroad plates to get rid of the rub I experience at 75-85% turn, my question is if the CMC/BMC is done and there's still a slight rub, and I add a spacer to lift the front of the truck another inch to get the necessary clearance, will I have to also do a diff drop? I've already trimmed the bumper and fender walls for the necessary clearance, last hang up is the body mounts, I'm thinking worst case here...Thanks in advance
    untitled.jpg untitled1.jpg
     
    YotaDan likes this.
  2. Mar 19, 2017 at 4:59 PM
    #2
    rons23

    rons23 Get The Led Out!!!

    Joined:
    Sep 18, 2014
    Member:
    #625
    Messages:
    8,504
    Gender:
    Male
    First Name:
    Ron
    Kill Devil Hills
    Vehicle:
    2008 Nautical Blue TRD
    Sabm (Gtek-Fab), Blake Carbon Diamond Plate door sil protecters, and Air Dam mod, Black Rivited Grill, Devil Horns- Black Anodized(Diaz Fabrication), Hid's in Low Beams and Fogs -6000k, Piaa Extreme for High Beams. Black Rhino Step Tubes, Razir Led interior Lights (white), Low Profile Black Diamond Plate Tool Box, Trd accesories, Weather Tech Mats, Carbon Fiber Shorty Antenna, Drl's, Plasta Dipped Badges + Front Grill Surround
    Nice looking Tundra Chad. With a 2.5" lift most here would say no. Once you start getting into the 3" or more range, then you would need them. 4wd only.
     
  3. Mar 19, 2017 at 5:06 PM
    #3
    ChadGrissom

    ChadGrissom [OP] New Member

    Joined:
    Mar 16, 2017
    Member:
    #6811
    Messages:
    30
    Gender:
    Male
    Vehicle:
    2012 Texas Edition Crewmax
    Bilstein 5100 front (Level) and back, K&N Ram Air Intake, Flowmaster Cat back dual, Toyo 295/65R20 on XD Misfit 20X9
    Ok that was my understanding, I don't have the Bilsteins maxed out, and if the BMC/CMC isn't successful then the next step will be spacers and with them also the diff drop, I'm fairly new to all of this so I appreciate the input brother!!!
     
    rons23 and SouthBoundSteve like this.
  4. Mar 19, 2017 at 5:09 PM
    #4
    rons23

    rons23 Get The Led Out!!!

    Joined:
    Sep 18, 2014
    Member:
    #625
    Messages:
    8,504
    Gender:
    Male
    First Name:
    Ron
    Kill Devil Hills
    Vehicle:
    2008 Nautical Blue TRD
    Sabm (Gtek-Fab), Blake Carbon Diamond Plate door sil protecters, and Air Dam mod, Black Rivited Grill, Devil Horns- Black Anodized(Diaz Fabrication), Hid's in Low Beams and Fogs -6000k, Piaa Extreme for High Beams. Black Rhino Step Tubes, Razir Led interior Lights (white), Low Profile Black Diamond Plate Tool Box, Trd accesories, Weather Tech Mats, Carbon Fiber Shorty Antenna, Drl's, Plasta Dipped Badges + Front Grill Surround
    Anytime Chad, there's a wealth of information on here. It's helped me a lot.
     
  5. Mar 19, 2017 at 5:28 PM
    #5
    Thegr8punkin

    Thegr8punkin A G.D.M/Sofa King Cool/COTJ's dreamboat

    Joined:
    Jan 18, 2017
    Member:
    #6015
    Messages:
    5,372
    Gender:
    Male
    First Name:
    Connor
    Northern Colorado
    Vehicle:
    08 blue sr5 2wd
    2 +5 hp stickers
    The diff drop isn't a bad thing to do anyways though. It helps correct the angle of the cv joint and most guys will say it's cheep insurance agenst a prematurely cv.
     
    Law323 likes this.
  6. Mar 19, 2017 at 5:33 PM
    #6
    jberry813

    jberry813 The Mad Scientist Staff Member

    Joined:
    Jan 8, 2014
    Member:
    #68
    Messages:
    1,920
    Gender:
    Male
    First Name:
    Jason
    Lake Tahoe
    Vehicle:
    2015 Tundra Platinum, 2012 Tacoma, 2007 T4R
    Metric shit ton of parts
    Diff drop is a terrible thing on 2nd/3rd gens. It tips the opposite side of the pinion down which moves the oil away from the pinion gear and bearing and the fill plug lower. Which means you not only can't fill the pumpkin the whole way, but you are directly moving gear oil away from the pinion. This is how pinion bearings get welded to the pinion shaft and make a sound similar to a gerbil getting fucked by an elephant.

    Not only that, it does nothing. Seriously, put an angle finder on the CV before and after the drop. There is zero change in the cv angle.
     
  7. Mar 19, 2017 at 5:43 PM
    #7
    ChadGrissom

    ChadGrissom [OP] New Member

    Joined:
    Mar 16, 2017
    Member:
    #6811
    Messages:
    30
    Gender:
    Male
    Vehicle:
    2012 Texas Edition Crewmax
    Bilstein 5100 front (Level) and back, K&N Ram Air Intake, Flowmaster Cat back dual, Toyo 295/65R20 on XD Misfit 20X9

    so it isn't necessary to do with a 2.5" level + 1"ish spacer?
     
    Rica25 likes this.
  8. Mar 19, 2017 at 5:48 PM
    #8
    jberry813

    jberry813 The Mad Scientist Staff Member

    Joined:
    Jan 8, 2014
    Member:
    #68
    Messages:
    1,920
    Gender:
    Male
    First Name:
    Jason
    Lake Tahoe
    Vehicle:
    2015 Tundra Platinum, 2012 Tacoma, 2007 T4R
    Metric shit ton of parts
    It's never necessary. Seriously, put an angle finder on the cv and then unbolt the two front mounts and measure again.
     
    Rica25, Kaatahdin, Spolar and 2 others like this.
  9. Mar 19, 2017 at 5:51 PM
    #9
    TheBeast

    TheBeast The Beach

    Joined:
    Apr 27, 2016
    Member:
    #3246
    Messages:
    12,298
    Gender:
    Male
    SoCal
    Vehicle:
    2012
    good to know
     
    Rica25 likes this.
  10. Mar 19, 2017 at 9:48 PM
    #10
    Eclipsed & Floating

    Eclipsed & Floating Over it.........

    Joined:
    Feb 20, 2017
    Member:
    #6454
    Messages:
    12,545
    Gender:
    Male
    I’m right where I need to be
    Vehicle:
    Voluptuous Whitey
    SO are you saying that everyone is doing it for no reason? What's this i hear about premature wear that dropping it will remedy? Is this a farce??
     
  11. Mar 19, 2017 at 9:55 PM
    #11
    TheBeast

    TheBeast The Beach

    Joined:
    Apr 27, 2016
    Member:
    #3246
    Messages:
    12,298
    Gender:
    Male
    SoCal
    Vehicle:
    2012
  12. Mar 19, 2017 at 10:01 PM
    #12
    Thegr8punkin

    Thegr8punkin A G.D.M/Sofa King Cool/COTJ's dreamboat

    Joined:
    Jan 18, 2017
    Member:
    #6015
    Messages:
    5,372
    Gender:
    Male
    First Name:
    Connor
    Northern Colorado
    Vehicle:
    08 blue sr5 2wd
    2 +5 hp stickers
    Depends who you ask I guess. I personally have seen enough trucks that had lifts and blew out cv axles by putting too much of an angle on the cv boot (then the boot rips and let's all the grease out and then blows the cv joint) that I would say it's just good to do, though I get the point about saying it can screw with how the pinion gets lubricanted but then again, why would dealership be allowed to install them if that was a concern? You would think that after Toyota had to replace a few front diffs they would start a tas case on it and then no more diffs drops would be installed...

    @ColoradoTJ how did you blow your front diff?
    Any oppion on this @LOTSOFTOYS ?
     
  13. Mar 19, 2017 at 10:08 PM
    #13
    ColoradoTJ

    ColoradoTJ I drink…and I know things. Staff Member

    Joined:
    Feb 24, 2016
    Member:
    #2766
    Messages:
    27,271
    Colorado
    Vehicle:
    LML 3500HD
    A metric buttload
    The craptastic needle bearing on the drivers side started failing. It is a common Toyota problem with an easy(ish) fix. Toyota recommended said fix, would install part, but no warranty and I would have to pay for labor. So I paid my 50.00, and they put a new front diff in.

    I know when it happened though. I was towing the camper, 4lo, up a darn steep hill.
     
    Rica25, SouthBoundSteve and 831Tun like this.
  14. Mar 19, 2017 at 10:53 PM
    #14
    831Tun

    831Tun heartless Bastrd

    Joined:
    Jun 7, 2016
    Member:
    #3549
    Messages:
    11,358
    Gender:
    Male
    First Name:
    Warren
    Santa Cruz
    Vehicle:
    '16 CM limited
    TC long travel. Deaver 420 SU leaf packs.
    Thanks Jason. Looks like I'll be pulling my diff drop back out.
     
  15. Apr 23, 2017 at 11:30 PM
    #15
    geno0506

    geno0506 New Member

    Joined:
    May 25, 2016
    Member:
    #3446
    Messages:
    4,723
    Gender:
    Male
    First Name:
    Michael
    Vehicle:
    2017 Tundra 5.7 CM 4x4, S/W, B-6112/5160

    Did you take it off and put the stock parts back on, I'm thinking of doing the same after looking at the way the rubber spacers were leaning and squishing to one side!
     
    Rica25 and 831Tun like this.
  16. Apr 23, 2017 at 11:35 PM
    #16
    831Tun

    831Tun heartless Bastrd

    Joined:
    Jun 7, 2016
    Member:
    #3549
    Messages:
    11,358
    Gender:
    Male
    First Name:
    Warren
    Santa Cruz
    Vehicle:
    '16 CM limited
    TC long travel. Deaver 420 SU leaf packs.
    I've been a bit too busy to pull it out but am planning to.
     
    geno0506 likes this.
  17. Apr 23, 2017 at 11:51 PM
    #17
    geno0506

    geno0506 New Member

    Joined:
    May 25, 2016
    Member:
    #3446
    Messages:
    4,723
    Gender:
    Male
    First Name:
    Michael
    Vehicle:
    2017 Tundra 5.7 CM 4x4, S/W, B-6112/5160
    Yeah, I just don't feel right looking at the way it's sitting now, Its just I hear 50/50 on the diff drop and after my alignment I'm sure I'll be around 2.5" and I I ever do go off road it will never be balls to the wall!
     
    Rica25 likes this.
  18. Apr 23, 2017 at 11:56 PM
    #18
    831Tun

    831Tun heartless Bastrd

    Joined:
    Jun 7, 2016
    Member:
    #3549
    Messages:
    11,358
    Gender:
    Male
    First Name:
    Warren
    Santa Cruz
    Vehicle:
    '16 CM limited
    TC long travel. Deaver 420 SU leaf packs.
    I'm thinking you don't need it. I'm at about 3.5" and don't think I really need it. When I get some time, now that it's stopped raining, I'll crawl under there and take a look.
     
    Rica25 and geno0506 like this.
  19. Apr 24, 2017 at 12:09 AM
    #19
    geno0506

    geno0506 New Member

    Joined:
    May 25, 2016
    Member:
    #3446
    Messages:
    4,723
    Gender:
    Male
    First Name:
    Michael
    Vehicle:
    2017 Tundra 5.7 CM 4x4, S/W, B-6112/5160

    Thanks,

    I'm just a bit jacked thinking about it, I think I'll get under it and put it back stock and I'll have the kit if I ever go beyond the 3" if needed considering the the PRO's don't have them and mine may be a 1/2" over them! Anyway this shit is making my brain hurt, :frusty::frusty::frusty:

    But thanks to you and the guys here, I do and have learned a lot, I guess I will have to take my training wheels off and just let my nuts drag! :cheers:
     
  20. Apr 24, 2017 at 1:56 AM
    #20
    Spolar

    Spolar Going broke

    Joined:
    Sep 15, 2016
    Member:
    #4558
    Messages:
    1,119
    Gender:
    Male
    First Name:
    Zac
    Seal Beach CA
    Vehicle:
    2016 sr5
    Told you about the diff drop when you pm'd me man! When I did my suspension set a 3" in the front I asked my buddy who's more knowledgeable than me to take a look with his angle finder and... no diff drop was installed. Also I don't know @jberry813 personally but after reading through different threads here and on TW I feel confident I can trust he knows what he's talking about. Especially when I read: "go measure and see for yourself" I tend to think it's more true than "just get a diff drop it's cheap insurance."
     
    Last edited: Apr 24, 2017
    Ellis_McPickle, Rica25 and geno0506 like this.
  21. Apr 24, 2017 at 4:58 AM
    #21
    BlueFalconActual

    BlueFalconActual Field Day Inspector Extraordinaire

    Joined:
    Jun 1, 2016
    Member:
    #3495
    Messages:
    1,628
    Gender:
    Male
    First Name:
    Kevin
    29 Palms, CA
    Vehicle:
    Tundra-less
    I foresee a large amount of diff drops in the "for sale" section soon.
     
    Rica25, geno0506 and NewImprovedRon like this.
  22. Apr 24, 2017 at 6:45 AM
    #22
    BlueFalconActual

    BlueFalconActual Field Day Inspector Extraordinaire

    Joined:
    Jun 1, 2016
    Member:
    #3495
    Messages:
    1,628
    Gender:
    Male
    First Name:
    Kevin
    29 Palms, CA
    Vehicle:
    Tundra-less
    It's always fun to see Jason (aka Jerry) come out of no where and settle an argument using facts illustrated with animal sex.
    [​IMG]
     
    Rica25, TheBeast, geno0506 and 4 others like this.
  23. Apr 24, 2017 at 10:19 AM
    #23
    geno0506

    geno0506 New Member

    Joined:
    May 25, 2016
    Member:
    #3446
    Messages:
    4,723
    Gender:
    Male
    First Name:
    Michael
    Vehicle:
    2017 Tundra 5.7 CM 4x4, S/W, B-6112/5160
    Whats Up Blue,

    Did you ever do a DD and what are you feelings on me needing one, thanks!
     
  24. Apr 24, 2017 at 10:19 AM
    #24
    geno0506

    geno0506 New Member

    Joined:
    May 25, 2016
    Member:
    #3446
    Messages:
    4,723
    Gender:
    Male
    First Name:
    Michael
    Vehicle:
    2017 Tundra 5.7 CM 4x4, S/W, B-6112/5160

    Sorry bro, my mind is a tad bit fried and it was late, lol!
     
  25. Apr 24, 2017 at 12:06 PM
    #25
    BlueFalconActual

    BlueFalconActual Field Day Inspector Extraordinaire

    Joined:
    Jun 1, 2016
    Member:
    #3495
    Messages:
    1,628
    Gender:
    Male
    First Name:
    Kevin
    29 Palms, CA
    Vehicle:
    Tundra-less
    Nope. I don't have the technical savvy of Jason but I figured if the TRD Pro doesn't have one then I didn't need one.
     
    geno0506 likes this.
  26. Apr 24, 2017 at 12:18 PM
    #26
    geno0506

    geno0506 New Member

    Joined:
    May 25, 2016
    Member:
    #3446
    Messages:
    4,723
    Gender:
    Male
    First Name:
    Michael
    Vehicle:
    2017 Tundra 5.7 CM 4x4, S/W, B-6112/5160

    Well after further ado, I now have a installed/uninstalled Diff Drop for good price! :lalala:
     

Products Discussed in

To Top