Jeff, I was told that this is natural on a new engine. The shiny new pistons and combustion chamber reflacts some of the heat into the culinder while shiny and new but once there is a carbon buildup (dull and black) more heat is absorbed into the heads. If you want to try an experiment take one head off, polish everything up and see if you get a split L to R.
Paul. ---- Jeff York <jeffyor...@yahoo.com> wrote: Its strange because I do not remember having high oil temps problems the first 50 hours or so of flying the plane.