Featured Car & Driver Dyno Results: The 2020 Toyota Supra Makes More Power Than Toyota Claims

Discussion in 'General Supra Topics' started by BrettS, May 21, 2019.

  1. AHP

    AHP Well-Known Member

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    What is? Ideally it should have been dyno'd in 6th gear (1:1).
     
  2. madweazl

    madweazl Well-Known Member

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    The dyno results not intersecting at 5250. The large delta between the torque (+100) and HP probably gives a different axis.
     
  3. AHP

    AHP Well-Known Member

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    Yeah... That's not at all how that works. HP and TQ always intersect at 5252; perhaps you should look up the formula. In WinPEP you can adjust the axes however you see fit to compare the curves; the standard is to have both on the same scale, though (which means they'll cross at 5252, per the math).
     
  4. madweazl

    madweazl Well-Known Member

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    No, it isnt always how it works, especially when there are large delta between measured HP and torque if forced scaling isnt used.
     
  5. AHP

    AHP Well-Known Member

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    Mathematically HP=TQ at 5252RPM. The nuances of the WinPEP software and whether you force scaling or not, does not change the calculation.
     
  6. madweazl

    madweazl Well-Known Member

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    I'm not challenging the math, I'm very familiar with dynos. The fact is, your graph wont intersect all the time; doesn't change your HP or torque. It's just a display issue.
     
  7. dgh

    dgh Well-Known Member

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    So, can anyone interpolate what the crankshaft HP and torque should be, based on the C & D dyno test?
     
  8. madweazl

    madweazl Well-Known Member

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    14% drivetrain loss is prevalent for newer vehicles.
     
  9. dgh

    dgh Well-Known Member

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    Thanks. Does that apply to torque too? Someone said this is for HP only, torque actually works differently.
     
  10. MA617M

    MA617M Well-Known Member

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    Torque is a product of gear ratios, diff ratios, wheel diameter, and in this case, torque multiplication through the converter.
     
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  11. dgh

    dgh Well-Known Member

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    Yeah, so what does the difference between Toyotas claimed 365 lb ft, and the dynos 427, mean? If the crankshaft HP is between 390-400, what would the torque be based on Toyotas claimed, and the dyno reading?
     
  12. XtremeMaC

    XtremeMaC Well-Known Member

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    #42 May 21, 2019
    Last edited: May 22, 2019
    Tried to fix it as much as possible..
    Dyno1.jpg

    cleaned up image:
    Dyno2.png
     
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  13. 2JZ-No-Sh*t

    2JZ-No-Sh*t Well-Known Member

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    Remember when this guy was crapping all over the Supra? He seems to have a different tune lately. :rolleyes:

     
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  14. Nurburgring

    Nurburgring Well-Known Member

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    >330whp is what most were expecting, as this has been almost universal with turbo BMW powerplants.

    But the big news is this engine is a torque monster! We just have the HP scale on the screenthot, but making some approximations, it`s churning around 250lb-ft at 1500rpms, and 400 at 2000rpms. That`s insane.
    The other side of the coin is that power is peaking very early (around 4800rpms).

    Both characteristics are largely determined by two factors: A small twin scroll turbo and the integrated head/manifold with very short runners. This is probably good news for the aftermarket: there is some big power to be made with a larger snail. For a street car though, the engine in stock form seems pretty damn sweet.


    upload_2019-5-21_19-39-0.png
     
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  15. madweazl

    madweazl Well-Known Member

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    I'd imagine it to look a lot like this one (also lacking the particulate filter).

    IMG_0235.jpg
     
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