Quote Originally Posted by SNOOPY View Post
This sounds a little contradictory to me? If it was running lean wouldn't your temp gauge also run hotter? Or do you believe the cooling system works so well it handles the heat...but the heat still shows up higher in the exhaust?
Yes, I believe the cooling system has the capacity to handle the cooling of the engine very well. A lean burning or over advanced timing will promote hotter combustion temps and that will make the exhaust system hotter as well but the cooling system can handle the cylinder head temps but once the heat is in the pipes it can not be controlled anymore and relies on air movement over the pipes to control that extra heat. Air flow through the panels now may be ok for an ideal running motor but if that balance is tilted the airflow may not be enough.