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Rear Axle BD20???

Discussion in '3rd Gen. Tacomas (2016+)' started by whitedlite, Feb 15, 2017.

  1. Feb 15, 2017 at 9:31 AM
    #1
    whitedlite

    whitedlite [OP] Insta @loadedtacos.. budget built

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    Alright guys, automagic (idk why autocorrect did that but I like it) trd sport with BD20 axle. If I understood right this is a carryover from 2nd Gen, question I have is how far back does this axle go. According to ARB it uses the same locker. P/N ARB RD129.

    So if I come across a totaled for sale whole truck that had an elocker could I use it? Would I need to pull the locker or could I simply change third members?

    Was the BD20 used on first gens also, same third member??

    I'm just trying to save money for real guys. Don't bash and say arb.

    I tried searching and couldn't find answers I was looking for, but obviously I searched, bc arb said the rd129 can be used all the way back to the T100 days.
     
    Last edited: Feb 15, 2017
  2. Feb 15, 2017 at 9:57 AM
    #2
    bobrown14

    bobrown14 Well-Known Member

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    Short answer = NO (or YES with $$$$) ... If you don't have a locker and you really really want a locker ARB makes a real one and it will work and probably be cheaper than what you are thinking about doing.

    EDIT: What's an "Akle"?? Is that even a word bro?
     
  3. Feb 15, 2017 at 10:00 AM
    #3
    whitedlite

    whitedlite [OP] Insta @loadedtacos.. budget built

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    What do you think I'm thinking lol

    Akle?? Beats me i said acle which still isn't what I meant, but it is a tree
     
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  4. Feb 15, 2017 at 10:05 AM
    #4
    bobrown14

    bobrown14 Well-Known Member

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    I think yer thinking you need a new Akle.... not sure why, bro. The times you will use it and really NEED it. Count on one hand.
     
  5. Feb 15, 2017 at 10:07 AM
    #5
    whitedlite

    whitedlite [OP] Insta @loadedtacos.. budget built

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    Not new axle, just a third member swap. The toyota axles are designed with drop out chunks
     
  6. Feb 15, 2017 at 10:10 AM
    #6
    bobrown14

    bobrown14 Well-Known Member

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    Does not compute....
     
  7. Feb 15, 2017 at 11:09 AM
    #7
    whitedlite

    whitedlite [OP] Insta @loadedtacos.. budget built

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    I'm confused as well, the third member on the front side of the rear axle has bolts holding it in, you can remove the whole third member gears and all by unbolting driveshaft and removing said bolts.

    Notice the picture I have attached, ECGS has 05+ tacoma, Tundra, and T100 listed as same third member. Interesting.. of course this probably means early model Tundra.

    Anyways, I just filled up in a stock trd sport dcsb 4x4 got 23.5 mpg hand calculated on fuelly! Not relevant just saying.

    Screenshot_20170215-130736.jpg
     
  8. Feb 15, 2017 at 11:12 AM
    #8
    whitedlite

    whitedlite [OP] Insta @loadedtacos.. budget built

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    So idk if I'm misunderstanding, but all of the trucks listed on ECGS share same rear thirds?

    Screenshot_20170215-131153.jpg
     
  9. Feb 15, 2017 at 11:37 AM
    #9
    bobrown14

    bobrown14 Well-Known Member

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    The Gen3 taco has a new rear diff... it's 8.5" instead of the 8" you're looking at. My 16 Sport has the 8.5" diff because Manual Tranny.. the Auto Sport has the 8" open diff that you can get an ARB locker for. The ORs and Pros have the 8.5" rear locker Auto and manual.

    So for me IF I wanted the locker I'd still got ARB even tho everything is there.. problem is going to be the ECU...I won't have programing for the E-locker and no way to upgrade...
     
  10. Feb 15, 2017 at 11:39 AM
    #10
    shakerhood

    shakerhood Well-Known Member

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    I believe the new rear is 8.75"
     
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  11. Feb 15, 2017 at 11:45 AM
    #11
    whitedlite

    whitedlite [OP] Insta @loadedtacos.. budget built

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    No first post tells what truck I have, that's offroad, pro, and manual transmissions that have the all new axle, well new for US. I'm in an auto sport so 8.4.
     
  12. Feb 15, 2017 at 11:51 AM
    #12
    bobrown14

    bobrown14 Well-Known Member

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    Corrected.. I meant what you knew... :thumbsup:
     
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  13. Feb 15, 2017 at 11:52 AM
    #13
    shakerhood

    shakerhood Well-Known Member

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    I am aware of that and was not speaking of yours specifically, the post I Quoted mentions a Sport with Manual having an 8.5" and I was saying I believe it is 8.75"
     
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  14. Feb 15, 2017 at 12:27 PM
    #14
    bobrown14

    bobrown14 Well-Known Member

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    Does not compute....
     
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  15. Feb 15, 2017 at 12:43 PM
    #15
    whitedlite

    whitedlite [OP] Insta @loadedtacos.. budget built

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    Got damn, you done gone an learned sumn.

    No one comes on tacoma world to learn. Only here for the photos.
     
  16. Feb 15, 2017 at 10:14 PM
    #16
    Diablo169

    Diablo169 ROKRAPR

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    Wow this thread went to shit.

    2016+ All Manuals and autos with factory locker: 8.75"

    2016+ All autos (no locker): 8"

    All 1st and 2nd gen tacos: 8.4"

    Yes, you got hosed if you have an auto and no locker.

    Not sure why this chart says 8.9" thougho_O
    IMG_1395.jpg
     
    Last edited: Feb 16, 2017
  17. Feb 15, 2017 at 10:30 PM
    #17
    shakerhood

    shakerhood Well-Known Member

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    I did not even realize you can buy a 16 or 17 2.7L with a Factory Rear Locker...
     
  18. Feb 16, 2017 at 6:38 AM
    #18
    Diablo169

    Diablo169 ROKRAPR

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    As far as I know you cannot get a 2.7 with a locker.

    I'll rearrange my post to better clarify, all manuals have the 8.75"
     
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  19. Feb 16, 2017 at 10:13 AM
    #19
    Woodrow F Call

    Woodrow F Call Kindling crackles and the smoke curls up...

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    Just because I'm new to Tacos..... I understand that a bigger ring gear is better, but is the 8.0" ring gear really not adequate?
     
  20. Feb 16, 2017 at 11:56 AM
    #20
    Diablo169

    Diablo169 ROKRAPR

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    I doubt anyone with 35" tires and smaller will ever break an 8" ring gear. I believe Toyota gives both axles the same tow rating, so I don't see any issue with them.

    Onther thing to take into consideration is axle shaft size, tooth contact and bearing size. I'm not really sure how those compare.
     

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