Home Forums Shifter Karts TM versus CR250

This topic contains 4 replies, has 4 voices, and was last updated by  chad garofalo 8 months, 1 week ago.

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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

    #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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