Re: 2-stroke vs 4-stroke spark plugs;am I dreaming

[legendre]

Over the years, I’ve heard a lot of woo-woo talk about spark polarity, but only as concerns + vs. – in a 4-cycle engine. The subject most often comes up when discussing double-ended coils, that fire a pair of plugs at once, such as in a 4-cyl motorcycle engine – obviously, the sparks will be of complementary polarities (one +, the other -).

But I’ve never heard any talk of one polarity or the other being more or less suitable to igniting a 2-stroke or 4-stroke engine. The discussion has always been limited to + vs. – in 4-stroke engines.

Seems like a lot of hooey to me, no matter how it’s applied – but I’m ready to learn, if there’s good data on it!