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Flywheel identification

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  • Flywheel identification

    Help identifying flywheels. I have two sets of late 61" flywheels here. One set has a "B" cast into it and the other set has an "A" cast into it. Both sets have the same casting no "150-24"
    Does anybody know what the difference is between them?
    The balance holes are in completely different locations so i wonder if they are for different pistons.


    Cheers.

  • #2
    Difference between cast or alloy pistons. Maybe different casting patterns.

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