Many of you have seen the process of making this rotary valve engine with different intake and exhaust system and how I tried to start it. If not, then let's watch the previous video first: <a href=" ...

One of the distinguishing features is that they don't need valves to operate. That's to say, the Wankel rotary engine design doesn't have valves -- but quite a few rotary engine designs have ...

As interesting as this concept is, it still has a long way to go before reaching production lines, not to mention its applications may be limited ...