Torque numbers and Dyno. Too high

Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by stanton, Sep 24, 2022.

  1. stanton

    stanton Bobtail Member

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    Nov 5, 2020
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    Please see the attached torque numbers. 2500-2800 ft lbs. Between 1200 and 1600 RPM.it is a Fitzgerald Glider, 600k miles. Under 19,000 hours. Peterbilt 579.

    I am looking for reliability and mpg. What do I need to change?


    How is low HP so low, never touched 350, while torque is dangerously high. Turbo psi gets above 40 as well. Just had a head gasket replaced. Oil pan was leaking as well. Along with rear main seal replaced.

    Vid of blowby:
    https://youtube.com/shorts/4UWCFUCMJq4?feature=share



    Many thanks
     

    Attached Files:

    singlescrewshaker Thanks this.
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  3. 062

    062 Road Train Member

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  4. Rubber duck kw

    Rubber duck kw Road Train Member

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    Either their dyno is on the fritz or the guy who ran it don't know what he's doing. That sort of torque with that little horsepower is unlikely if not impossible without massive stroke.
     
  5. AModelCat

    AModelCat Road Train Member

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    More than likely an error.
     
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