n this article, I am going to talk about intake and exhaust valves and how they relate to an air-cooled engine. This is my opinion from years of seeing and playing with different engines. The relationship of the valves is important. Think about it. If you put in a bigger intake valve, you can let in more fuel and air. Yes, this will make more power. The more you cram in the cylinder, the bigger the bang. The bigger the bang, more power. Now, this is what you're probably not thinking about. The fuel has fired and now you have a cylinder full of exhaust. The piston comes up and the exhaust valve opens, and the
