Ed Anderson wrote:

 Chuck, regarding coolant temperature.  Your installation has a generous
cooling duct for your radiator on the bottom front of the cowl.  However,
you also have retained the two normal air openings each side of the spinner.
It would seem that air being rammed through those two holes could provide a
substantial amount of pressure inside the cowling.  This could hinder the
air flow through your lower radiator due to the back pressure behind it due
to the air flow in these two openings.  I wonder whether you might try
temporarily blocking off those two openings and see what effect it has on
your cooling.  FWIW

Ed Anderson

A little background Ed to save time. The left opening feeds the oil cooler
mounted horizontally on the firewall through a sheet metal duct.
You can see it in this  picture just above the rad.
 
Paul Lamar
 
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