In the L-head arrangement, where is the camshaft located?

In an L-head engine design, the camshaft is located in the crankcase. This configuration allows for a simpler and more compact design compared to overhead camshaft arrangements. The camshaft operates the intake and exhaust valves directly or indirectly through pushrods and rocker arms, which are also positioned within the crankcase area. This placement contributes to a more efficient transfer of power and reduces the overall height of the engine. Additionally, having the camshaft in the crankcase can help in maintaining a lower center of gravity for the engine, which can enhance stability and performance.

In contrast, other arrangements, such as overhead cam configurations, place the camshaft in the cylinder head or above the cylinder, leading to different mechanical complexities and performance characteristics.