On Mon, 16 May 2005 00:44:02 GMT, "Jay Honeck"
wrote:

Obviously everything did run hotter, but EGTs never topped 1550 degrees, and
CHTs never topped 360 degrees. This is a tad hotter than I've been
running, but the engine sounded fine, and all cylinders stabilized within
100 degrees of each other -- which is as good as it gets on my normally
aspirated O-540.

When you think about it for a minute Jay, it makes sense that the
cylinderheads cannot overheat when running lean of peak: There isn't
enough fuel in the mixture to overheat them.

Running LOP has it's consequences (less power developed), but
overheating and detonation aren't a worry.

Have you read Deakin's "Mixture Magic" column? It's EXTREMELY
comprehensive.

Corky Scott