Whether we're talking about vehicles with two or four wheels, a primary goal of engineers is to wring out as much power from each unit of displacement for every engine they make. This keeps weight ...

Just about every piston engine is defined by two basic measurements: bore and stroke. Bore is the diameter of the cylinder. Stroke is the distance the piston travels from bottom dead center to top ...

For decades, engineers have used small-displacement engines to prove that raw capacity is not the only path to victory. By pairing compact cylinders with clever breathing, high revs, and forced ...