So, to answer the question, do rotary engines have valves? Yes, they do, including in some of the most popular rotary engines of all time — those used in the Mazda RX-7 and Mazda RX-8.

Both are made of hardened metal, and pressure from combustion helps push the valve tighter into the seat: more pressure, better seal. But aside from sealing, poppet valves don’t offer many ...

This means it is a reciprocating rotary engine. Yeah, weird stuff. The camshaft is also centrally located in the crankcase and still runs at 50-percent crankshaft speed but only actuates one valve ...