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4.0 throttle body specs?...

Discussion in 'Performance and Tuning' started by tooter, Aug 16, 2013.

  1. tooter

    tooter [OP] play every day

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    Built for maximum low end torque, tooter II.VII intake manifold spacer, LCE long tube header, Injen long tube intake, 2,900 rpm torque peak.
    Could any of you 4.0 guys tell me what the bore diameter is on your 4.0 throttle body? And also do you know the distance between the studs? I'm exploring the possibility of adapting a 4.0 throttle body to fit onto a 2.7 engine.

    Thanks,

    Greg :)
     
  2. Torspd

    Torspd Tor-nication

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    I just gave my spare to a machinist......
     
  3. tooter

    tooter [OP] play every day

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    Built for maximum low end torque, tooter II.VII intake manifold spacer, LCE long tube header, Injen long tube intake, 2,900 rpm torque peak.
    For comparison, the 2.7 throttle body bore is 61mm and the bolt pattern is 65mm square.
     
  4. memario1214

    memario1214 Vivid Illumination Vendor

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    4.0 ID bore is 65mm
     
  5. tooter

    tooter [OP] play every day

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    Built for maximum low end torque, tooter II.VII intake manifold spacer, LCE long tube header, Injen long tube intake, 2,900 rpm torque peak.
    Thanks, man. :)

    It's good that the difference in only 4mm which raises the chance that the bolt pattern might be the same.

    Does anyone know the distance in millimeters between their throttle body bolts?

    That measurement could be also obtained from any 4.0 manifold, flat gasket, or throttle body spacer.
     
  6. tooter

    tooter [OP] play every day

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    Built for maximum low end torque, tooter II.VII intake manifold spacer, LCE long tube header, Injen long tube intake, 2,900 rpm torque peak.
    Bump. Is there anyone here who can measure the distance between the mounting bolts on their 4.0 throttle body? It would be a great help.

    (looks like I'm going to have to buy one just to find out... :confused: )
     
  7. memario1214

    memario1214 Vivid Illumination Vendor

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    I'd just call Gadget and ask him what the bolt pattern looks like on the 70mm one that they sell. I don't feel like I have the measuring tools available to me here to give you an accurate answer :thumbsup:
     
  8. Torspd

    Torspd Tor-nication

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    Roughly 6.9 cm top - top, and ~6.7cm top - bottom.
     
  9. tooter

    tooter [OP] play every day

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    Built for maximum low end torque, tooter II.VII intake manifold spacer, LCE long tube header, Injen long tube intake, 2,900 rpm torque peak.
    Ok. Thanks for your help, Tor. :)

    So the bolt pattern isn't 65mm square. That rules it out. :(
     
  10. Tacorriendo

    Tacorriendo Well-Known Member

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    Take a prescision ruler with you and head on th autozone, ask for a trottle body gasket, and ask to see it. Then when they bring it, measure it then give it back and tell them thanks!
    Make up a phony excuse why you cannot buy it at that time.;)
     
  11. Torspd

    Torspd Tor-nication

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    Throttle body gasket is an O-ring.
     
  12. SoCaltaco65

    SoCaltaco65 Well-Known Member

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    Tor how far over are you going?
     
  13. Dragons Taco

    Dragons Taco Well-Known Member

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  14. Torspd

    Torspd Tor-nication

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    With what in particular?
     
  15. SoCaltaco65

    SoCaltaco65 Well-Known Member

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    your TB ID
     
  16. Torspd

    Torspd Tor-nication

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    Just keeping it stock for now. Might upgrade to the slightly larger one once the intake manifold is made.
     
  17. tooter

    tooter [OP] play every day

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    Built for maximum low end torque, tooter II.VII intake manifold spacer, LCE long tube header, Injen long tube intake, 2,900 rpm torque peak.
    Just a few mm's. The 65mm 4.0 would be a logical candidate because of the same wiring and ECU controls. That's key to making it work. I'm going to my local auto wrecking yard to measure the bolt pattern for myself to find out for sure whether or not it's 65mm square like the 61mm 2.7 throttle body is. :thumbsup:

    My 1.5 Yaris had a stock 46mm throttle. A 51mm Corolla 1.8 throttle body works great because it uses exactly the same electronic controls and has exactly the same bolt pattern (60mm square).

    [​IMG]

    I had an adaptor plate CNC designed and machined so that it would work. I believe that exactly the same approach that worked on my car would also work on my truck. Besides a header there's absolutely nothing else to enhance the normally aspirated performance of the 2.7. So it's a wide open uncharted land that is already lots of fun to explore. :)

    Greg
     
  18. tooter

    tooter [OP] play every day

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    Built for maximum low end torque, tooter II.VII intake manifold spacer, LCE long tube header, Injen long tube intake, 2,900 rpm torque peak.
    Yeah, Toyota uses the same simple functional gasket design for all of their current throttle bodies because it has excellent sealing capabilities..

    [​IMG]
     
    Last edited: Aug 21, 2013
  19. lemon177

    lemon177 Well-Known Member

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    you could always up the compression ;)

    not sure if this was mentioned, but URD has a tb conversion for the 4.0 in our trucks to mount the slightly larger tb found on the newer 1gre's with dual vvti in the fj/4runner. if you could get in contact with them im sure theyll have numbers and pix for you
     
  20. tooter

    tooter [OP] play every day

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    Built for maximum low end torque, tooter II.VII intake manifold spacer, LCE long tube header, Injen long tube intake, 2,900 rpm torque peak.
    Thanks for the suggestion. :)
    There's an auto wrecking yard for Toyota pickup trucks and SUV's not far from me. And when I go to measure, if the bolt pattern is 65mm square, I can pick up a 4.0 throttle body when I'm there. :thumbsup:
     
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