They don't melt down. They explode. Think of it this way... The alloy in a cast piston is like a grade 5 bolt. It bends easy if you hit it with a hammer, and can bend a bit back and forth before it cracks and breaks. The alloy in a forged piston is like a grade 8 bolt. It's harder to bend, and will bend with enough force, but not that many times before it breaks of. Hypers are like a chisel. Strnog, but very brittle. They don't bend, they don't change shape, and hit them hard enough, they shatter. The hammer is detonation. You can run NO2 if you have gapped the rings right and totally avoid detonation. If you dont do either, they will shatter off parts, or in their entirety.
