I watched an engine damn near cook itself the other day that was running Klotz Benol @ 32:1. A hose popped off and the engine didn't get any water to it for a solid 10 minutes. It cooked the o-rings, and even melted the hoses attatched to the brass fittings on the head. It literally was sizzling water for a solid 15 minutes after the problem was found.
The head was pulled on the spot and there was absolutely no damage at all. The engine was running Wiseco pistons, too. We swapped the o-rings in the head, cut the hoses back a touch, and rode it for another tank of fuel.
Needless to say, I'm a believer in the bean even more than I was before.