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What about running rotary spark plugs?


Proven Member
Jul 7, 2016
East side, Washington
Sometimes I get weird ideas

If you've seen a rotary sparkplug it's made wildly different from a standard spark plug. It's made flat so it can run close to the apex seal without it chopping the electrode off.

Couple points:

1. Harder to blow out spark even under high boost.

2. The sparkplug physically takes up slightly more combustion chamber and could minimally raise/change compression.

3. They make these plugs in various temp ranges too.

4. Virtually non adjustable gap.

Guy stated he ran one in a 2 cycle dirt bike and reported ran just fine looked less fouled than his normal plug

Some people state your spark system must be Uber good to run these plugs, the dsm coil pack is strong I don't see an issue there


Nov 1, 2008
London, UK, Europe
Dont forhet the rotor guys also use fuel enhancers to bump the octane up! They must use good fuel with high octane, in theory many plugs can be swapped around but depends if it works or not with the way it ignites. Only way is to try it and see how it goes
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