Spark plug use

Captain Hook created the topic: Spark plug use

I'm new to RC gas boats. In the past with dirt bikes etc. NGK was always the best 2-cyle plug and seldom fouled, Champions made good fishing sinkers. What works best in a typical stock Zenoah motor?
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Scott replied the topic: Re:Spark plug use

While the champions work just fine, they fail far to often when engine takes a gulp of water which causes the ceramic center electrode insulator to fracture.

NGK are MUCH tougher and are preferred. Use the CMR-7H

2 stroke Engine Tech of 30+ years, Prop tweeker, Chronic tinkerholic, Home of Motor Heads RC Racing Engines ...
8 time NAMBA National 6 lap heat racing record holder.
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