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Pinging when warm

Discussion in 'Other Norton Motorcycles' started by Paul W., Jun 7, 2018.

  1. dynodave


    May 28, 2003
    Well 31 was bad and 28 is better?

    You need information.
    1. what is the RPM point and RPM range that it pings at.
    2. What is amount of throttle opening at which it pings---to understand the cylinder pressure it pings at.

    Please identify the pistons now that you have seen them.

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