[olddog]

It could be a game changer in many applications. We put about $1500 in a set of heads, $200-300, for a set of rockers, likewise for a cam, and still have to buy a set of lifters and a push rods. I suspect about $2500 for heads with a total valve train. A rotating assembly is about $1200. So you could save about half the cost, going to the opposed piston design. This savings would go a long way toward paying for the blower, needed. It is a simpler design to assemble, with much fewer parts. Then you get better fuel efficiency and lower emissions. There is a lot to like about this engine.

On top of all that it can run on a lot of different fuels.