Home Forums Shifter Karts TM versus CR250

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    • #15138
      nigel cooper
      Participant

      Met a guy the other day and he was saying that a maxed out TM125 shifter kart engine has 60 HP and  would be more powerful than a stock CR250 engine.Can that be true? If it is,it must be more powerful in hp but not in torque?

    • #15168
      Chris Reinhardt
      Participant

      There isn’t a 125 anything that ever made 60hp…. Depends on what you want to do.

      CR

      Chris Reinhardt

      CR2 Motorsports

      http://www.cr2motorsports.webs.com/

      XV Racing Products

      http://www.xvengineering.com/

      ­­

    • #15191
      nigel cooper
      Participant

      thanks Chris,I had a feeling the guy was way off. Finding hp/torque/dyno charts for honda motors online is easy.The TM engines dyno results are hard to find,must be a secret.

    • #15219
      James McMahon
      Participant

      Not a hope in hell of any 125 making 60BHP on gas, at least not in any way that would be useful when you take it off the dyno and bolt it to a kart. Methanol, maybe, gas hell no. Even 50 is darn close to a trophy pull anyway.

      That said, on your average sprint track the 250 is going to be squabbling for grip, usually the 125s are just as quick, if not quicker for that reason. Bigger tracks its a different story. If you’re powerful in HP but not torque then you have to be spinning higher RPMs, whilst keeping torque up.

      For dyno sheets, unless you know a lot of the factors behind the data it’s not going to be all that meaningful. Fuel especially and of course if the TM you are dealing with has been modified, the “stock” curve is useless. Also, you cant use the motorcycle curves for the kart application, as they generally have much different pipes.
      Try Italian motors for more info on the TM moto. Very good package, IMO a better motor that the CR125, but Honda won that battle. I think of it as VHS vs BetaMax LOL.

    • #15432
      chad garofalo
      Participant

      Have a TM mod moto. Old Italian Motors race motor. Sheet that came with it says 45 hp. Fwiw

       

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