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  1. #1

    Kawasaki 300 with pistons 9.5.1 je

    What boost gain and compression


  2. #2
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    What's your question ? Don't really make sense.
    The compression will be 9.5.1 and there will be no boost gain or very very little from the motor maybe spinning faster.

  3. #3
    more compression usually more power

  4. #4

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    It would be interesting to cc a 300 with the 9.5:1 je pistons and see what the comp ratio actually is.

    I believe they are the same as the 250/260 je's? If so, they aint gonna be 9.5:1 in a 300.

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