[KennyKong]

I could be wrong here and everyone's made a lot of valid points.

From what i understand, temperature resistence and tolerance is purely based on the material used.

The big improvement is the fact that when something is forged, the material is better BALANCED. Strength comes from the balance.

With something forged, if you cut them up into even sized pieces (like a piston), each piece will weigh within a similar weight of each other. Cast parts don't have that sort of balance and DENSITY. When the density is about the same, the thermal expansion is controlled better. Like all metals when they heat up and cool down, things will always change but when something is cast or forged, those properties will vary.


Someone correct me if i'm wrong!