Prado URD Kit Transmission Valve Body Upgrade

Discussion in 'F/I Mods & Tuning' started by iniazy, Nov 16, 2014.

  1. Torspd

    Torspd Moderator
    Staff Member

    Joined:
    May 25, 2008
    Messages:
    14,717
    Likes Received:
    20
    8:1?! Does the builder just build the engines and have them waiting for buyers? Expecting turbo builds?
     
  2. iniazy

    iniazy Member

    Joined:
    Jan 29, 2014
    Messages:
    462
    Likes Received:
    22
    Yes, I believe so.
     
  3. Torspd

    Torspd Moderator
    Staff Member

    Joined:
    May 25, 2008
    Messages:
    14,717
    Likes Received:
    20
    Time to make it turbo then. ;)
     
  4. iniazy

    iniazy Member

    Joined:
    Jan 29, 2014
    Messages:
    462
    Likes Received:
    22
    Yes he's planning to. I wonder how much power can the auto transmission hold with the valve body upgrade before it gives. I doubt it will be able to take much more. He told me the garage he bought the engine from in the UAE has a 800 HP FJ cruiser. He's sent me a picture of it, I'm not sure I can share it, but here it is anyway:

    [​IMG]

    If you share it, only share the link.
     
  5. Redlantern

    Redlantern Member

    Joined:
    Jan 28, 2013
    Messages:
    510
    Likes Received:
    4
    Damn that's sexy right there.

    As far as the auto transmission with the valvebody upgrade its rated up to 500hp. That's what level ten told and I believe it's posted on their website as well. I'm wondering if it can handle more tho. I've read on other forums that the a750 trans was actually built to be mated with the v8s but ended up being used for the 1gr instead.

    Ps, Inlazy you're needed needed in this other thread below...

    http://www.xr-underground.com/forum/showthread.php?t=57352
     
  6. iniazy

    iniazy Member

    Joined:
    Jan 29, 2014
    Messages:
    462
    Likes Received:
    22
    The A750E/F is mated to the 1UZ-FE, 2UZ-FE and 3UZ-FE, with a different tune, in the Lexus LS400, Land Cruiser 100 Series V8, and LS 430, before they switched the latter to a six speed. So obviously with the proper tune it should be able to handle loads of torque and power.
     
  7. iniazy

    iniazy Member

    Joined:
    Jan 29, 2014
    Messages:
    462
    Likes Received:
    22
    I really can't understand how they do it, if the ECU has a ROM (Read only memory) that cannot be erased, how can they just change the factory tune? I am really suspicious.

    I just sent them a PM on Whatsapp.
     
  8. Redlantern

    Redlantern Member

    Joined:
    Jan 28, 2013
    Messages:
    510
    Likes Received:
    4
    Is the turbo FJ manual or auto?
     
  9. Torspd

    Torspd Moderator
    Staff Member

    Joined:
    May 25, 2008
    Messages:
    14,717
    Likes Received:
    20
    Man! I thought I had a lot of vacuum lines!
     
  10. iniazy

    iniazy Member

    Joined:
    Jan 29, 2014
    Messages:
    462
    Likes Received:
    22
    I have no idea.
     
  11. iniazy

    iniazy Member

    Joined:
    Jan 29, 2014
    Messages:
    462
    Likes Received:
    22
    I just did another valve body upgrade for a friend who has a short wheel base Prado V6. He's naturally aspirated, but still wanted to do it. I warned him that he might not feel much of a difference but he still insisted, he wanted the fast shifting. So I did it for him and now he's very happy. He is reporting significant improvement in performance. That tells me the valve body upgrade is helpful even if you don't have significant increase in engine power like from forced induction.
     
    Redlantern and Torspd like this.
  12. Redlantern

    Redlantern Member

    Joined:
    Jan 28, 2013
    Messages:
    510
    Likes Received:
    4
    Good to know! I always recommend this to fellow Tacoma guys here on the island. Especially if they don't want down time to send their valvebody in. The kit works well.
     

Share This Page

  • About Us

    XR-Underground is a dedicated community of Toyota X-Runner enthusiasts that was launched in January 2007. X-Runner Underground.com, referred to as XRU by our regular members, offers an active discussion forum, group events, specialty merchandise, a welcoming community of owners and the most information you can find about the Toyota X-Runner on the internet!
  • Quick Navigation

    Open the Quick Navigation

  • Like us on Facebook

  • Your donations keep XRU going

    XRU is a forum for the users, by the users. We receive very limited funding from vendors so we really rely on donations to cover our operating costs and to provide products and giveaways at events. Every dollar helps!

    If you are able to donate, we'd really appreciate your help.