Technician A says that overhead camshaft engines will often use two camshafts to optimally locate valves and ports on either side of the cylinder head. Technician B says that two camshafts eliminate the need for long rocker levers and rocker shafts. Who is right?

Question

Quizplus · Accepted Answer

Both Technician A and Technician B are correct. Overhead camshaft engines often use two camshafts (DOHC - Dual Overhead Camshaft) to optimize valve and port placement, and this design also eliminates the need for long rocker levers and rocker shafts, as the camshafts are directly above the valves.

Technician a Says That Overhead Camshaft Engines Will Often Use