1. Welcome to Tacoma World!

    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 Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Oversized brakes, rear disc conversion?

Discussion in '2nd Gen. Tacomas (2005-2015)' started by barbeepkt, Jul 30, 2010.

  1. Jul 30, 2010 at 11:37 AM
    #1
    barbeepkt

    barbeepkt [OP] TX Republican

    Joined:
    Jul 2, 2009
    Member:
    #19201
    Messages:
    3
    Gender:
    Male
    First Name:
    Dave
    Houston, TX
    Vehicle:
    06 PreRunner SR5 Debadged
    Debadged and heading to blacked out.
    Does anyone out there know of any aftermarket oversized disc brake kits? I am running 20" KMC wheels with 285/50R20(s) and have noticed significant brake performance drop off. I am also wondering if anyone knows of a rear disc conversion kit.

    2005 Pre-runner
     
  2. Jul 30, 2010 at 11:37 AM
    #2
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,154
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    The rear disk conversion actually gives reduced stopping.
     
  3. Jul 30, 2010 at 11:50 AM
    #3
    Janster

    Janster Old & Forgetful

    Joined:
    Mar 25, 2007
    Member:
    #1138
    Messages:
    14,256
    Gender:
    Female
    First Name:
    Jandy
    Lancaster, PA
    Vehicle:
    2016 GMC Canyon SLT w/ LineX and....
    You can't just slap on a disc conversion kit and assume it'll all work. There's a lot of other things to take into consideration, like master cylinder type & size, along with brake proportioning.

    The master cylinder you have now - is a Disc/Drum master cylinder. To convert the rear to discs, you need a Disc/Disc master cylinder and probably a bigger bore along with a different proportioning valve (they are also different for disc or drum setups.

    Sure - you could change to discs, but the only way you'll get better braking is if you change out the entire system with a matched master cylinder & proportioning valve to handle it.
     
  4. Jul 30, 2010 at 12:43 PM
    #4
    JKD

    JKD Well-Known Member

    Joined:
    Jun 9, 2009
    Member:
    #18207
    Messages:
    2,016
    Gender:
    Male
    I'd try better front brake pads.
     
  5. Jul 30, 2010 at 12:52 PM
    #5
    LVTacoma

    LVTacoma Well-Known Member

    Joined:
    Jun 28, 2009
    Member:
    #19027
    Messages:
    258
    Gender:
    Male
    S/S brake lines upgrade.. def my next move also
     
  6. Jul 30, 2010 at 1:52 PM
    #6
    barbeepkt

    barbeepkt [OP] TX Republican

    Joined:
    Jul 2, 2009
    Member:
    #19201
    Messages:
    3
    Gender:
    Male
    First Name:
    Dave
    Houston, TX
    Vehicle:
    06 PreRunner SR5 Debadged
    Debadged and heading to blacked out.
    Thanks for the info. Will skip the disc conversion and start with upgraded shoes out back and upgraded rotors, calipers and pads up front.
     
  7. Jul 30, 2010 at 3:07 PM
    #7
    jcayce

    jcayce Well-Known Member

    Joined:
    Jun 15, 2009
    Member:
    #18475
    Messages:
    489
    Gender:
    Male
    Texas
    Vehicle:
    09 TRD Offroad 4x4
    Why don't you find a newer model FJ Cruiser in a junk yard and scavenge the master cylinder and rear assembly with discs? I wouldn't be surprised if many of the parts from the FJ bolted up to the Tacoma without to much fuss.

    I've seen an X-Runner here in San Antonio with rear discs...looks nice but not sure about the performace or the process that they went through for the conversion.

    Or just be happy with your drums. They look like they're from 1950 but are so far rather reliable.
     
  8. Jul 30, 2010 at 6:55 PM
    #8
    Asgard

    Asgard Well-Known Member

    Joined:
    Apr 19, 2008
    Member:
    #6078
    Messages:
    1,093
    Gender:
    Male
    First Name:
    Chris
    Vehicle:
    06 PreRunner DC SR5 w/LSD
  9. Jul 30, 2010 at 7:18 PM
    #9
    DrRabbitFurHead

    DrRabbitFurHead Yeah, there's a TSB for that!

    Joined:
    Jun 18, 2009
    Member:
    #18625
    Messages:
    1,058
    Gender:
    Male
    Salem, VA
    Vehicle:
    X-treme Off Road Edition (4x4)
    Icon Extended Travel Coil Overs, Fox Rear Resi 8-Way Adjustable Shocks, Light Racing UCA's, OME Rear Leafs, M/T Classic Locks 17x9, Nitto T/G (285/70/R17), 5mm Billet Aluminum Spacers, Demello Sliders, All Pro Front Plate Bumper & IFS Skid Plate, PIAA 510's, Doug Thorley Long Tube Headers, O2 sims, Rear Timbren's & U-Bolt Flip Kit , 3* Rear Axel Shims, Extended Rear Brake Lines, 48" Hi-Lift with a ton of accessories, Wet Okoles, TRD bed mat, Borla Air Filter, Garmin Nuvi 765T, Viper 5901 remote start, 50% tint.
  10. Jul 30, 2010 at 7:27 PM
    #10
    Asgard

    Asgard Well-Known Member

    Joined:
    Apr 19, 2008
    Member:
    #6078
    Messages:
    1,093
    Gender:
    Male
    First Name:
    Chris
    Vehicle:
    06 PreRunner DC SR5 w/LSD
    ^^Thanks for pointing that out, guess I can stop thinking about buying that.
     
  11. Aug 20, 2010 at 10:11 PM
    #11
    KodiakToyTRD

    KodiakToyTRD Well-Known Member

    Joined:
    Jun 19, 2010
    Member:
    #39186
    Messages:
    15,669
    Gender:
    Male
    CO
    Vehicle:
    2013 Scion FR-S Whiteout
  12. Aug 21, 2010 at 3:58 AM
    #12
    Janster

    Janster Old & Forgetful

    Joined:
    Mar 25, 2007
    Member:
    #1138
    Messages:
    14,256
    Gender:
    Female
    First Name:
    Jandy
    Lancaster, PA
    Vehicle:
    2016 GMC Canyon SLT w/ LineX and....
  13. Aug 21, 2010 at 9:42 AM
    #13
    Kelson

    Kelson My Truck is Cuter than Yours

    Joined:
    May 13, 2008
    Member:
    #6597
    Messages:
    4,505
    Gender:
    Male
    First Name:
    Kelson
    Honolulu, Hawaii
    Vehicle:
    08 5-Lug Reg. Cab SR5
    SR5 Exterior/Interior (Color matched Front Bumper, Chrome Grille Surround and Chrome Rear Bumper/Silver Scoshe Dash Kit, A/C Bezel, A/C Vent Surround) LED license plate and white interior lights, Wet Okole Seat Covers, iPad in-Dash, JL CL-RLC, JL 13TW5 sub, JL 500/1 Slash V1 amp, JL XR 6.5 Components, Rockford Fosgate 6X9s in Boxes Front XRunner Coils, DJM Control Arms and Rear 4X4 Leafs, Custom 2" Angled Streetacos.com Blocks Front XR Bilstien Struts and Rear XR Bilstien Shocks, CravenSpeen Antennae, RX-8 Rims w/ Fronts:235/40-R18 Sumitomo HTR Rears:245/40-R18 Goodyear Eagle GT, 35% Tint front windows, OEM Sliding Privacy Glass w/ 5% Ceramic Tint, Flowmaster Super 44 dumped before the axle, URD Short Throw Shifter, Door Sill Protectors, Door Edge Guards, OEM Sport Pedals,The Retrofit Source Morimoto Mini D2S Stage III 35W 5K HID Headlights, OEM Fog Lights w/ piss yellow bulbs, OEM Cruise Control, Porsche 944 Bucket Seats, BeefedTaco Skid Plate, Whale
    you can put them on any 5 lug tacoma...not just x runners
     
  14. Aug 21, 2010 at 10:05 AM
    #14
    T0LLPHR33

    T0LLPHR33 Well-Known Member

    Joined:
    Sep 26, 2007
    Member:
    #2817
    Messages:
    1,596
    Gender:
    Male
    S1N C1TY...(from Hilo, HI)...
    Vehicle:
    BSP TRD Off-Road
    APR X-1 | TRD CAI w/Clear Cover | TRD Short Shifter w/ TRD "RED" Shift Knob | SGII w/Blendmount| Snugtop SL w/KeyLess Entry | 5% Tint | Pop-n-Lock | Bosch Icon WB | S2K Antenna | HRM | LS 8K Projectors w/BSP HLM & 8K Fogs w/FLM | Debadged |Tinted Tails | Black Weathertechs | MX RGM & RBM | Optima Red Top 35 | Gatorback Belt |
    you guys can could just buy the TRD BBK for the FJs...FJs share the same lug pattern as 4x4 tacomas (6x5.5" lug pattern)

    TRD BBK for FJ Cruisers <-click for link

    this image below is for the XR (5 lug) this isn't the correct image...
    [​IMG]

    if you have a TRD Offroad and/or tow package it comes with 4 piston caliper disc brakes...the TRD BBK is also a 4 piston caliper disc design...but has larger rotors and those rotors are drilled to help dissipate heat...

    when I do my brake upgrade I'm going to switch to 6 piston caliper discs up front and 4 piston caliper discs in the rear...I'm still piecing together my kit it will be all Willwood...:D

    if you want rear disk brakes find a FJ Cruiser that's in a junk yard...pull the disc brakes off the rear and you will only need to have some fabricate the mount for them...you will also need to change out the parking brake (e-brake) cable to work with this setup since we have drums from factory...

    honestly I really don't get toyota some times...while they leave the tacoma with rear drums but upgrade to discs in the tundra, sequoia, 4runner, fj cruiser, and even the dinky puspus RAV4...when the tacoma sells more models then most of those combined...its a little retarded on their part...I understand that drums still work but they still aren't as good as discs IMHO...it wouldn't cost toyota much more since the fj shares the same rear dana as the tacoma...I wouldn't be surprised if the mounting brackets for the fj cruiser rear discs fit on the tacoma without any fitment issues...things like this make me want to kick toyota leads designer in the balls and tell him how's that for brakes...lol
     
  15. Aug 21, 2010 at 10:43 AM
    #15
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

    Joined:
    May 8, 2008
    Member:
    #6497
    Messages:
    106,154
    Gender:
    Male
    First Name:
    FlimFlubberJAM
    Tenoe, AZ
    Vehicle:
    2013 Rubicon Unlimited,
    4.10 gears, sliders, and lots of buttons.
    FWIW, All the 6 lug Tacomas have 4 piston calipers.....Actually....Toyota has used 4 piston colipers on their trucks (6 lug), since the mid 80's. ;)
     
  16. Aug 21, 2010 at 1:52 PM
    #16
    DevL

    DevL Well-Known Member

    Joined:
    Feb 23, 2010
    Member:
    #31952
    Messages:
    1,923
    Gender:
    Male
    The FJ TRD is 1.5" larger rotors... definantly better. My drums groan like crazy on steep decents (like 45 degrees or more) will rear disks stop that? Its really annoying. Or could I just use a different shoe compound?

    Sorry for the semi hijack...
     
  17. Aug 21, 2010 at 1:58 PM
    #17
    Larry

    Larry CARL

    Joined:
    Jul 28, 2010
    Member:
    #40895
    Messages:
    8,268
    CARL
    You are a regular Mona Lisa Vito :D
     
  18. Aug 22, 2010 at 6:07 AM
    #18
    Janster

    Janster Old & Forgetful

    Joined:
    Mar 25, 2007
    Member:
    #1138
    Messages:
    14,256
    Gender:
    Female
    First Name:
    Jandy
    Lancaster, PA
    Vehicle:
    2016 GMC Canyon SLT w/ LineX and....
    :D

    I spent weeks reading and researching about disc/drum conversions before converting to discs on my Jeep (trail rig). It greatly improved the braking on the jeep (for the trails).

    But honestly, I'd never mess with that stuff on a daily driver. Stick with what was designed on your truck. As soon as you mess with that stuff - it just might not be there when you need it.
     
To Top