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converting Sport Model to A-TRAC

Discussion in '2nd Gen. Tacomas (2005-2015)' started by viperstd, Dec 7, 2010.

  1. Dec 8, 2010 at 3:29 PM
    #41
    David K

    David K Well-Known Member

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    If you want the rear end locked, then the A-TRAC (on the front end in this case) is active to 3 mph. That really doesn't matter because once you have tried both... you find out the A-TRAC works alone... and doesn't need to rear locked... A-TRAC does it, and A-TRAC alone does not have a speed limit... only the fact you are in low range will be the limit.

    If you are in a situation that you think requires the rear locked and the A-TRAC, then you won't worry about 3 mph.

    A-TRAC doesn't need the rear to be locked... it will take of the traction needs front and back.

    jandrews is correct about adding lockers to a non A-TRAC rig. Do that.

    What I say is that A-TRAC offers the traction of front and rear lockers on a stock, showroom truck. Nothing more needs to be added to go to the wild places we like to get to.

    Front lockers are great if you don't have A-TRAC already... Lockers give equal torque to both tires, all the time. They hinder steeing, so you will be turning them on and off alot on the trail... but they are quiet when engaged.

    A-TRAC gives torque to the traction tire by matching the non-traction tire's rotation to it (with the brakes instead of gears in the differential). That makes a noise, but you have no loss of steering control and do not need to turn it on and off as you drive.

    If TRAC and A-TRAC were not available, I would want lockers. If only TRAC was available, I would do the Yellow Wire Mod (4-Lo TRAC mod).
     
  2. Dec 8, 2010 at 3:33 PM
    #42
    toyo freak

    toyo freak Another Toyota Enthusiast

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    I think the best cheapest would be throw those crappy BFG a/t away and get some real tires like the KM2s. Just My .02 I have been in trucks with A TRAC and its not worth it. Most of the time your basic 4x4, a little speed and some good tires and you will get through it
     
  3. Dec 8, 2010 at 3:38 PM
    #43
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    Because BOTH are useful tools as I have said several times now.

    I have A-TRAC. I'm letting Lrgrnr be my guinea pig for a front locker in these IFS trucks. If his front diff and axles hold up well to a year or so of abuse, I'm going to lock my front as well on top of the A-TRAC. I'm not convinced the front end of the drivetrain can handle the stresses of a locked diff.

    Paging HBmurphy...

    So...what's the point? That A-TRAC is sometimes better and lockers are sometimes better?

    I think I said that in that monster fucking thread of David K's like a month ago. And I said again here a few posts ago. I said it again in response to your quote above. If that's what you're getting at then we aren't disagreeing and I have no idea what we're debating here.

    I wouldn't want A-TRAC for slick descents, where a locker would be a better tool to control wheelspin more predictably.

    I can still see situations where A-TRAC would be the preferred option on rocks (primarily high flex situations where one wheel is completely off the ground).
     
  4. Dec 8, 2010 at 3:45 PM
    #44
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    :anonymous:

    Enjoying the latest shitfit?
     
  5. Dec 8, 2010 at 3:53 PM
    #45
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    I'd agree with that. With proper use, it shouldn't be a problem.
     
  6. Dec 8, 2010 at 3:58 PM
    #46
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    Is it time for a lock yet?
     
  7. Dec 8, 2010 at 3:58 PM
    #47
    01tacoprerunner

    01tacoprerunner Lifted 'n Locked 4WD Prerunner

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    :popcorn: Pass some of that over here Larry.
     
  8. Dec 8, 2010 at 3:59 PM
    #48
    01tacoprerunner

    01tacoprerunner Lifted 'n Locked 4WD Prerunner

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    Tryed to repp, but i wont let me, damn
     
  9. Dec 8, 2010 at 4:01 PM
    #49
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    Got yer back.
     
  10. Dec 8, 2010 at 4:02 PM
    #50
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    Well, if their stuff didn't kill mileage so much...
     
  11. Dec 8, 2010 at 4:10 PM
    #51
    Crom

    Crom Working on truck...

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    I have examined much technical material and I can say that it is not recommended to retrofit A-TRAC to a non-offroad 4x4 Tacoma. With thousands of dollars you may be able to do it. I can tell you from my research that There are hardware differences between Brake boosters that sets the 4x4 off-road models apart from all other model Tacomas. The 4x4 off-road model has a hydraulic brake booster, and all other Tacoma's have the vacuum brake booster.

    If anyone out there was thinking that to add A-TRAC it's just a simple addition of some electronics--its not.
     
  12. Dec 8, 2010 at 4:19 PM
    #52
    Mxpatriot

    Mxpatriot Arctic Prerunner

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    Money pit.
    And this is why none of the other offroad Toyota websites take TW seriously....
     
  13. Dec 8, 2010 at 4:22 PM
    #53
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    I would *not* consider TW an offroad Toyota website.
     
  14. Dec 8, 2010 at 4:30 PM
    #54
    jandrews

    jandrews Carolina Alliance Southwest Region Ambassador

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    Hey man, no problem with that. Those meets are some of the best chillin' you can do! Makes me glad I found this place...even if it has cost me a fuckton of money (and counting).
     
  15. Dec 8, 2010 at 5:03 PM
    #55
    supralight

    supralight Well-Known Member

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    Read the post again, I stated a speed limit for A-TRAC Functionality only when locker is engaged.

    Sorry for the quick "not-so-solid" quote here but I'm on my phone: "The Rear Differential Lock is also available in L4 with or without A-TRAC (LSD on the front axle) turned on. With A-TRAC on, one would have maximum traction, however when the rear is locked, A-TRAC only works when the truck is going less than 3 mph. Obviously, Toyota wants us only to use the rear locker for getting unstuck or very slow crawling. VSC, TRAC and ABS are all off in L4, as well."
     
  16. Dec 8, 2010 at 5:35 PM
    #56
    David K

    David K Well-Known Member

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    Somewhere above the mess and bad language... someone said something about not wanting A-TRAC on going down steep hills...??? Why not, as long as you have pushed the DAC (downhill assist) button... That thing is amazinging... lets your truck crawl at 2 mph down steep rocks without locking the brakes and going into a slide!

    Do you guys ever try the gizmos or read the owners manual... and why are the non-A-TRAC 2006 or whatever owners even trying to explain it when so many of us with it and who had other Tacomas without it are here to help?

    If you wanted to be a rich man and could pick the brain of anyone... would you pick the brain of a homeless bum or a rich man?

    If you wanted to hear how A-TRAC works... yadda yadda yadda...

    The OP should get front and rear lockers and not think about also having A-TRAC... A-TRAC simulates lockers, and does so well.. but no need for both.

    What Crom said... by-the-way!
     
  17. Dec 8, 2010 at 5:50 PM
    #57
    jandrews

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    A couple reasons, primarily:

    1) I'm more familiar with traditional methods, including the feedback that might indicate something is going wrong.

    2) (this is the big one) Challenge factor. It's not all fun if the truck does all the driving.

    It's good to know that stuff is there if I want/need it.
     
  18. Dec 8, 2010 at 6:10 PM
    #58
    OZ-T

    OZ-T Thats what it is to be a slave ...

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    Deja vu this thread
     
  19. Dec 8, 2010 at 6:54 PM
    #59
    F-125Racer

    F-125Racer Well-Known Member

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    To the OP: Why not just do the "yellow wire" mod? Won't that give you what you are looking for?
     
  20. Dec 8, 2010 at 7:32 PM
    #60
    supralight

    supralight Well-Known Member

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    Thanks to everyone up there who participated in the sinking of this thread.

    On the subject:

    F-125Racer: the yellow wire mod (which I had done), is not nearly as agressive as the real thing. It will get the job done in mild situation but it act much more smoothly.
     
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