The Knight sleeve valve engine used the four-stroke Otto-cycle system present in most modern vehicle engines. Starting with ...

While that makes me a little sad, it helps me appreciate the revival of this ancient Willys-Knight sleeve valve engine all the more as this guy in 2025 got it going after it had sat for more than ...

immediately the engine ... motor. Knight's invention is a mechanical or structural improvement in the design of the valve mechanism. The valve mechanisr consists of two concentric sleeves sliding ...