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Old 11-23-2014, 09:45 AM
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Red Baron Mike
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I bought the MECOA 1/4-32 standard plug adapter for my Norvel .074. With a K&B 1L non idle bar plug. The adapter was machined so the K&B plug sits flush with the top of the combustion chamber. The difference was only a 950 rpm loss over the factory Norvel plug. I just tested them yesterday. Idle, transition and top end were good.