Technician A says that cast pistons run cooler than forged pistons. Technician B says that cast pistons are stronger than forged pistons. Who is right?

Question

Quizplus · Accepted Answer

Cast pistons are made of a softer metal than forged pistons, which allows them to conform to the cylinder walls more easily. This reduces friction and heat, making cast pistons run cooler than forged pistons. However, cast pistons are not as strong as forged pistons, which are made of a harder metal that is less likely to break under stress.

Technician a Says That Cast Pistons Run Cooler Than Forged