Front/Rear power split.

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  • Heat Seeking Missile
    S2Forum Maniac
    • Jul 2007
    • 658
    • Home: United Kingdom Current: Wales

    #1

    Front/Rear power split.

    Nice quick and simple one, but one I cant seem to find the answer for, so I hope its not one of them stupid questions.

    What percentage of the power is split between the front and the rear on the S2? Is it 50:50?

    Mark
    '93 Brilliant Blue Audi S2 Avant - Broken again.
    '98 Tahiti Blue Rover 216SE Coupe
    '96 Arktiksilber Metallic BMW 525td (E34)
    '01 Dark Green Jeep Grand Cherokee 3.1LTD
    '97 Polar White Vauxhall Vectra 2.0Di LS
    '96 Alpine White Peugeot 306 XLDt
  • anton
    S2Forum Maniac
    • Jan 2005
    • 802
    • Country: United Kingdom

    #2
    a torsen splits power 50:50 , the only thing that you can change is the bias, in our cars i believe its 1:2 but there is an upgrade from stasis that shifts up to 1:4 and limmits front bias, ie up to 80% rear or up to 60% front. sort of shifts the limmits and expands them, but the static bias if you call it that is always 50/50 on a torsen.

    Ant
    91' Coupe quattro 20v - project
    KW V2s and other goodies
    now gone
    03' BMW 330CI - Sold
    08' A5 Coupe 3.0l tdi quattro - Sold
    57' BMW 525d M Sport Touring

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    • goodall
      S2Forum Maniac
      • Jul 2008
      • 810
      • Country: Northern Ireland

      #3
      50:50 static

      up to 75:25 or 25:75 depending on which axle is transmitting less torque

      Comment

      • 4WheelDrifter
        S2Forum Zealot
        • Oct 2004
        • 5773
        • Country: Devon

        #4
        Originally posted by goodall
        50:50 static

        up to 75:25 or 25:75 depending on which axle is transmitting less torque
        That's how I understand it too.

        ATM I only have ~99:1 or up to 50:50, and no rear diff lock.
        SS

        Comment

        • anton
          S2Forum Maniac
          • Jan 2005
          • 802
          • Country: United Kingdom

          #5
          Originally posted by 4WheelDrifter
          ATM I only have ~99:1 or up to 50:50, and no rear diff lock.
          How does that work??

          if your interested about how the torsen works i posted a link in the stasis upgrade thread about the workings. i dont know about the s2 specs but i would have thought 1:3 was a bit high....could be wrong though..

          Ant
          91' Coupe quattro 20v - project
          KW V2s and other goodies
          now gone
          03' BMW 330CI - Sold
          08' A5 Coupe 3.0l tdi quattro - Sold
          57' BMW 525d M Sport Touring

          Comment

          • philKS2
            S2Forum Addict
            • Sep 2006
            • 370
            • Country: United Kingdom

            #6
            Doh.. me being a little dumb... and not understanding the science...

            So does that mean on a normal bit of driving the power is split 50:50 ??

            If so, can it change... and why... is it like more power goes to the rear if you're accelerating hard from a standstill, but more to the front if you're powering round a corner??

            How much does it change 60-40??

            P
            SOLD !


            Comment

            • anton
              S2Forum Maniac
              • Jan 2005
              • 802
              • Country: United Kingdom

              #7
              yes thats right, on normal driving its 50:50 and unfortunately using a torsen this cannot be changed, however when the unit sences more torque on either axel it will bias to the higher torque, this is what can be changed, as in 1:2 or 1:3 or 1:4 depending on what version you have, you can also limmit the bias, as in set the front that it can never accept more than 50% of the torque but the rear can accept up to 80%

              as far as i know the only way to set a static bias of something other than 1:1 is with a viscous coupling, ie imprezzas and S3 or with advanced clutch type, ie new evos (i think) ect.
              could be wrong about the applications there but my point is that you need viscous or clutch type differentials to change a static bias.

              that said you can addapt the torsen ot be at a constant bias, as in constant 60:40 however this would overheat VERY quickly and not last long, even with an oil cooler.
              HTH

              Ant
              91' Coupe quattro 20v - project
              KW V2s and other goodies
              now gone
              03' BMW 330CI - Sold
              08' A5 Coupe 3.0l tdi quattro - Sold
              57' BMW 525d M Sport Touring

              Comment

              • Rusty
                Super Moderator
                • Jun 2004
                • 18953
                • Country: United Kingdom

                #8
                Need to look further into the Stasis upgrade as it could give some really good results...
                Cheers'en, AndyC
                1994 ABY Coupe - Projekt Alpinweiss

                Comment

                • Heat Seeking Missile
                  S2Forum Maniac
                  • Jul 2007
                  • 658
                  • Home: United Kingdom Current: Wales

                  #9
                  Interesting replies there, thanks. I was asked about it in work on Thursday, and I didn't have an answer, so at least I've got something now

                  Mark
                  '93 Brilliant Blue Audi S2 Avant - Broken again.
                  '98 Tahiti Blue Rover 216SE Coupe
                  '96 Arktiksilber Metallic BMW 525td (E34)
                  '01 Dark Green Jeep Grand Cherokee 3.1LTD
                  '97 Polar White Vauxhall Vectra 2.0Di LS
                  '96 Alpine White Peugeot 306 XLDt

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