Yeah, but once all that yummy fuel and air hits the cylinder heads, it just runs around the place like a bubble in a piss pot.
The heads themselves, while they work.... sort of ok, are the worst design ever.
The only reason the stuff lights up with a spark plug is because its just about rooted from the convoluted trip its just made.
The fuel and air would set fire to itself if it could, just to get the hell outta there and down the exhaust pipe.
The interesting thing is, if the engine had a good set of heads on it, these motors would be a bullet.