4 Stroke Flathead Boxer Engine

A flathead engine, also known as a sidevalve engine is an internal combustion engine with its valves contained within the engine block, instead of in the cylinder head, as in an overhead valve engine. The boxer configuration with two opposite cylinders is/was used by motorcycle manufacterers as BMW, Douglas, Harley-Davidson, Indian, Lilac, Zündapp, among others. The boxer engine is commonly used in aircraft applications because they generate a lot of power from a light engine.Printing and Assemb