There are three arrangements which may be used for an engine ... The angle for two-, four- and eight-cylinder engines is usually 90 . For six- and twelve-cylinder engines the angle is usually 60 .

The same goes for six-cylinder engines, which are experiencing a comeback as inline engines but can also be found in other arrangements. While inline engines have a number of important benefits ...

Flathead designs gave way to overhead valves, and inline cylinder arrangements morphed into V-shaped or horizontally-opposed layouts. However, sometimes the better engine layout depends on its ...

After some testing, he discovered he could increase efficiency by constraining the cylinder with a slider ... could start experimenting with engine arrangements and geometry.