Wheel and Crank power

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  • A80Avant
    S2Forum Obsessed
    • Sep 2005
    • 10873
    • Country: Greece

    #1

    Wheel and Crank power

    Does anyone know how much is the loss between the crank power hp measurement and the actual wheel power measurement of the S2/RS2??

    If you have any dyno sheets that would be nice.Im trying to figure out what the losses are and what my aims should be for upgrades...!!

    cheers!
    Vasilis
  • Jon441cc
    S2Forum Fiend
    • Dec 2005
    • 2061
    • Country: United Kingdom

    #2
    Around 25% drivetrain loss.
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    • A80Avant
      S2Forum Obsessed
      • Sep 2005
      • 10873
      • Country: Greece

      #3
      so a 330 hp cranck RS2 would be around 230hp at the wheels??

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      • Greg_S
        Administrator
        • Jul 2003
        • 12430
        • Country: United Kingdom

        #4
        nearer 247hp at the wheels.
        Greg

        S2Forum.com Administrator & Webmaster

        '93 Coupe with a few tweeks

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        • A80Avant
          S2Forum Obsessed
          • Sep 2005
          • 10873
          • Country: Greece

          #5
          so what should i do to reach 300hp at the wheels with original equipment?

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          • AndersS2
            S2Forum Extremist
            • Sep 2005
            • 1364
            • Home: Norway

            #6
            Originally posted by Jon441cc
            Around 25% drivetrain loss.
            But that loss %, is off a OEM engine right?
            I reckon 25% loss won't be the same percent if you tune a car from 315hp -> 650hp. Thereas the loss will be greater the more horespower you got, which just doesnt make sense?!

            Anders - S2 Avant Clubsport - 8pots or die!

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            • Jon441cc
              S2Forum Fiend
              • Dec 2005
              • 2061
              • Country: United Kingdom

              #7
              Originally posted by AndersS2
              But that loss %, is off a OEM engine right?
              I reckon 25% loss won't be the same percent if you tune a car from 315hp -> 650hp. Thereas the loss will be greater the more horespower you got, which just doesnt make sense?!


              To many Variables to give an exact figure, 60-80hp loss through the drivetrain for the quattro system.
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