"Dan Luke" wrote in message
...

"CriticalMass" wrote:
I don't understand why you would want to operate the engine without
leaning. No recommendation I've ever read about post-overhaul break-in
ever included anything like that.

Well, you do want to run the engine at high power settings to seat the
rings
and you don't want to get the cylinders too hot lest they glaze, so
running
rich for break-in is a pretty common precaution against the latter.

Um...leaner is cooler, Dan! 50 LOP is about a hot as you can get an engine
without milting it down into slag.