Great job, Shiv. Your post cleared up a lot of things that everyone (including me) assumed we knew.
Shiv was only 3 posts away from becoming a Specialist, but I have promoted Shiv even higher, to Scooby Expert. Hehe. I know it's nothing, but it's the least I can do.
Here is something I want to add to clarify things out even more. Shiv, Adam and anyone else feel free to correct me, since I can't be 100% right on these things.
What can cause an engine to "blow"?
1. High EGT's will literally cause engine internal to melt. I think the magic number not to go above on pump gas are 900C and 1650F.
2. Detonation (ping, knock) will destroy the pistons, bent conrods and amage the valves due to the extereme stress caused by the self-igntiting a/f mixture happening anywhere in the cylinder.
3. Too much boost with high compression will cause head gasgets and rings to blow due to the extreme cylinder pressure.
4. Increased power output will put excessive stress on engine's internals and destroying them.
5. Inefficient engine cooling and lubrication will also do dramatic damage to the engine.
6. Donuts sucked into the blow-off valve will also do... I am way off this time, hehe.
Is this it? Did I forget anything or mention something wrong here?