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About Ken_Davis

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  1. Ken_Davis

    Yamaha WR SM takin heat

    I have heard of Yamaha singles blowing up on road courses. Not just Yamaha's either. Usually in Sound of Singles race bikes (dirt motor, road race chasis). I'm curious myself as to what comes apart, valve train? crank? usually extended high revs are blamed. is the issue lack of oil to something, or vibration? who knows? Loudon is a pretty short track isn't it? how long are you tapped out in top gear and full throttle? Good luck, Ken