I'm hoping that I will be able to remove the oil/air cooler and block off that inlet.  This should bring the oil temps more in line with the water temps.  Also, this would reduce the pressure inside the cowl thereby improving the airflow through the water radiator, and increase the efficiency of the system in the process.  We'll see. 

I may eventually do something similar.  One point – before eliminating your oil/air cooler you may want to get some data on the pressure drop on the oil side for the oil/water cooler.  The Fluidyne coolers I looked at had excessive pressure drop for the full flow oil for the rotary.  Those coolers are designed for piston engines with lower oil flows.

Do you know a model number on that cooler?

Al

(Lots of disruption here because of the fires.  My kids and grandkids have been evacuated from their homes and are staying here.  No fire danger here, but lots of smoke. Not able to get to my airplane at Ramona airport; but have word that it is fine.  Friends at Ramona have been evacuated, and still don’t know if their homes are OK.)