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Old 01-02-2014, 05:26 AM   #17
billj18
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Join Date: Aug 2012
Location: Pittsburgh, PA
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With due respect, I question this formula. Four cycle engines fire every other revolution, on the compression stroke, but not on the exhaust stroke. Thus, it would be only three ignitions per rev; six ignitions would equal 2 revolutions, right?

Bill
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