On Apr 27, 2006, at 9:57 PM, Charlie Kohler wrote:

Detonation erodes the center of the piston.

Charlie:

Remember the cylinder we showed in class that had 20 hours of light detonation, 3-4 hours of medium detonation and about 30 minutes of heavy detonation that looked absolutely pristine and showed no signs whatsoever of any damage? How does that reconcile with the above?

Walter