[NOTASIX]

Originally Posted by Mick_D

Nobody mentioned over-revving the engine. How can it be a fact if you are just speculating?

Nobody had to mention it.. The pressure plate fracture yelled it at me.

That simply does not happen under normal circumstances in my experience, even with exceptional track usage, and abuse.

That much CR with one set of plugs on modern fuel is asking for it. We also do not know which set of plugs were firing. If it was just the bottom set, well the cylinder pressure would be even more wigged out.

Sounds like a sperfect storm to me. Sweep the parts in a pile, and start over.. Or give up, and buy a Miata