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Rear End Options

Discussion in 'X-Runners' started by Papo454, May 22, 2012.

  1. May 22, 2012 at 4:53 PM
    #1
    Papo454

    Papo454 [OP] Member

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    Jorge
    Stockbridge, GA
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    K&N cai, Gibson catback exhaust, chromed fac rims, billet grill, Kenwood speakers
    My first time... here goes???? My xRunner is basically a daily drive, almost at the 100K mark, no complaints. If there is one disappointing factor, its the braking part! Both my car & my wife's truck have four-wheel disc systems. This old rear-drum brake set-up is lacking sometimes. My query... anyone have any experience/suggestions on swapping out the rear-axle or changing the brakes to disc? Both worry about quoting what might seem like the obvious to you... I'm not offended easily! Appreciate any and all suggestions. Thanks...
     
  2. May 22, 2012 at 4:57 PM
    #2
    Highland Logan

    Highland Logan UBIQUE

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    Frank
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    Welcome to TW. The issues with changing a drum system to disc's has come up here before. I'm sure if you use the search bar, you'll find lots of posts. The short version is that the brake system was designed to use drums, and no amount of altering will create a system worth using. Sorry I didn't pay too much attention, as this was not something I plan to do.

    Frank
     
  3. May 22, 2012 at 6:51 PM
    #3
    GuyWithCamera

    GuyWithCamera Well-Known Member

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  4. May 22, 2012 at 6:54 PM
    #4
    whippersnapper02

    whippersnapper02 Well-Known Member

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    Rear disks will not help. Throw on some better front pads, rotors and SS lines like I will be soon. Or you could go all out on the TRD kit.
     
  5. May 23, 2012 at 4:52 AM
    #5
    Kelson

    Kelson My Truck is Cuter than Yours

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    *discs

    and depending on the use, yes, disc brakes may be beneficial

    yes, the rear does very little of the actual braking. but, if for whatever reason intense, repeated braking is needed, discs would be beneficial as they are much less prone to excessive heat buildup.

    for avereage daily driving, there will be no difference. let's get that clear.

    like whipper said, front brake upgrades (especially on a truck with brake and vehicle weight proportions heavily favoring the front) will do much in terms of improving overall brake performance more than any kind of rear upgrade.
     
  6. May 23, 2012 at 6:23 AM
    #6
    whippersnapper02

    whippersnapper02 Well-Known Member

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    In the case of the Taco the braking got worse for a member that bought the conversion kit. Yeah you can play with a proportioning valve but in the end what for? There is no weight in the bed and it is still a heavy truck that you are tying to slow down.
     
  7. May 23, 2012 at 6:41 AM
    #7
    Darthyota

    Darthyota Well-Known Member

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    like others have said your best bet is to first upgrade the front be it either with a simple pad and rotor upgrade or by putting on your big boy pants and doing a bbk, as doing the rear will make the ass end lock up with little to no braking force. which dramatically affects handling for the worse, especially if you like to push the limits of your truck. i would also suggest looking up sdxrunner619 on xrunnerground and chat with him about his experiances with his rear disc conversion
     
  8. May 23, 2012 at 8:48 AM
    #8
    SargeSlapnuts

    SargeSlapnuts SargeSlapnuts 보고용의!!!!

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    an adjustable brake proportioning valve from summit racing should fixe the 80/20 braking split then you could adjust it to more like 65/35-70/30. you can grab a good on for 50-90 bucks.
     
  9. May 23, 2012 at 9:59 AM
    #9
    Kelson

    Kelson My Truck is Cuter than Yours

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    this case that you mention does not necessarily reflect even what the OP is asking for; we are talking about a 5-lug kit designed for an XRunner. considering both of these kits (rotora and Lexus Rear BBK) in comparison to the rather undersized kit for the 6 lug trucks, are quite large in comparison.

    like i stated before overall braking power shouldn't be your main concern when considering a rear disc conversion; rather other factors such as heat dissipation and substantially less brake fade etc.
     
  10. May 23, 2012 at 10:09 AM
    #10
    triumphx

    triumphx Well-Known Member

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    Get the rotora bbk from tundraracing.com, its on sale for $1299. I have them and love em. The problem with disks in the rear is that they work to well for the wieght we have back there. They will lock up quite easy unless you get a bias valve and adjust accordingly. But why buy better brakes to just tone them down?! They are wonderful for drifting however....
     
  11. May 24, 2012 at 4:18 AM
    #11
    Papo454

    Papo454 [OP] Member

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    Jorge
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    wow, that's a lot of good stuff, really appreciate. understand (should've known) that the weight distribution (front-to-rear) has a big impact. think i'll go with the front end upgrade, will post when i git-er-done. again, thanks mucho for all the responses.
     
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