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Thread: POTR Big Valve head Spec

  1. #41
    Punto Enthusiast
    Join Date
    Oct 2010
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    Stockton on tees
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    241
    Sorry

  2. #42
    Punto Lover
    Join Date
    Jun 2007
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    Germany
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    1,213
    Standard engine goes easy to 8000rpm. What you have to do: balancing crank and flywheel and pulley.

    To rev higher, like andyb said. Lighter valvetrain is the best way. Look on the followers i had for my project. 160gr. less only in the cylinderhead.

    Its not a problem to rev near 10000rpm if you know what you have to do.
    But to make safe, you need a lot of money only for the engine.

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