The Knight sleeve valve engine used the four-stroke Otto-cycle system present in most modern vehicle engines. Starting with the piston at the top of the cylinder, the crankshaft's rotation pulls ...

The Napier is a complicated extrapolation of a basic opposed-piston engine. Your average “engine” has cylinders and pistons ...

They are usually situated between the valve cover and the cylinder head ... we have identified the top options for those seeking the best performance and durability. In the following sections ...