Cating and forging is the common process to form basic shape of engine.
Casting is a manufacturing process in which a liquid material is usually poured into a mold, which contains a hollow cavity of the desired shape, and then allowed to solidify.It is one of the oldest manufacturing process to form metal material.
Forgingis a manufacturing process involving the shaping of metal using localized compressive forces. The blows are delivered with a hammer (often a power hammer) or a die.
Materials obtained through casting and forging processes are polished to micron precision.
As it is directly linked to the power, safety and reliability of automobiles, the demand for quality is extremely rigorous.
In order to guranty the prduct qaulity high skiled engineering work is neccessary.
Machining is commonly referred to as "machining".