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valve adjustment

Discussion in '2nd Gen. Tacomas' started by OCTaco, Mar 25, 2010.

  1. OCTaco

    OCTaco [OP] Well-Known Member

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    Does anyone know when we need to do the valve adjustment on out trucks? I have 84k on mine and i get a lot of vavle noise so im thinking it might be time.
     
  2. pauldotcom

    pauldotcom Well-Known Member

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  3. chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    FlimFlubberJAM
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    4.10 gears, sliders, lots of buttons, and yellow flashing lights on the dash.
    I was told that they should go 250K miles before they need an adjustment.
     
  4. OCTaco

    OCTaco [OP] Well-Known Member

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    Awesome, it must just be a figment of my imagination then.
     
  5. WilsonTheDog

    WilsonTheDog Kylie's dad

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    Magnaflow 12576 muffler & chrome tip, Westin step bars, 27% tint, Pop N Lock, AFE ProdryS, bed mat, Husky liners, D-rings added, Access Literider tonneau, Pioneer 4-ways all around, GY Wrangler Duratracs 265/75/16, 5100's @ 1.75", 1.5" AAL
    In other words, the truck will have been bought back by Toyota due to frame rust before a valve adjustment is needed.
     
  6. OCTaco

    OCTaco [OP] Well-Known Member

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    Awesome. Do you know what gasket it is? Or where i can find that tsb? I need to get my shit fixed ASAP. I really fell like i lose powere when i hear that ticking shit.
     
  7. 81shark

    81shark Well-Known Member

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    i'd be down of a rust buy back:D
     
  8. OCTaco

    OCTaco [OP] Well-Known Member

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    How do i go about doing this?
     
  9. WilsonTheDog

    WilsonTheDog Kylie's dad

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    What you do is, drive your truck for 8 years and hope that you and many others have rust problems. Then, Toyota buys your truck back for 150% of it's value. See, it's like an investment with a great return.
     
  10. OCTaco

    OCTaco [OP] Well-Known Member

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    Loving it. Although it does not fix my current problem.
     
  11. WilsonTheDog

    WilsonTheDog Kylie's dad

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    All I can say about that is to bring it in and have it looked at.
     
  12. RogerGene

    RogerGene Member

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    Try higher octane fuel next fill-up. If ticking changes or disappears, there's the problem, and short of major engineering, no real easy fix.
    Valve adjust--Aren't these double overhead cams? Therefore, no rocker arms, i.e. no adjustment? You have me wondering, hmm.
     
  13. OCTaco

    OCTaco [OP] Well-Known Member

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    I'm gonna be honest with you guys, im not a guru when it comes to these trucks. I just know the real basics. And I always use shell Vpower which is 91 octane. Funny thing, when i called toyota to ask about the valve adjustment they said,"at 60k or when they get too loud." Why would the say that if they need no adjustment?
     
  14. dalsmthme

    dalsmthme Well-Known Member

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    The valve train is a direct acting mechanical bucket (DAMB) valve train. It does not have a hydraulic lash adjuster. They eventually need to be adjusted. They very the shickness of buckets or shims under the buckets. Very simple and stiff valve train, kinda noisy though....
     
  15. RogerGene

    RogerGene Member

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    Thanks, "dalsmthme", most of my wrenching is from older tech engines. I'll be thinking about an adjustment soon.
     
  16. SkyHighTacoma

    SkyHighTacoma White Tank

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    Some mods. Check build.
    What about on the 5vz?
     
  17. chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Thor

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    4.10 gears, sliders, lots of buttons, and yellow flashing lights on the dash.
    Im not sure what its interval is. Its the same Shim under bucket system though....
     
  18. SkyHighTacoma

    SkyHighTacoma White Tank

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    Some mods. Check build.
    Yea, I knew it was a shim under bucket. Even though I dont understand the benefit of a "shim under bucket" lol.
     
  19. steve o 77

    steve o 77 braaap

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    I believe the shim under bucket design holds its adjustment better and longer. Im not sure though.
     
  20. dalsmthme

    dalsmthme Well-Known Member

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    A direct acting mechanical bucket valve train is very strong and stiff. The valve train inertia is very low. They have a big advantage when designing combustion chambers specifically with valve angles. They are simple and robust but require adjustment intervals and tend to be noisy.
     
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