Posted for "Dominic V. Crain" <domcrain@pacific.net.au>:

 
 Interested to have input from the list on cowl inlet sizes, and if
 anyone has increased the diameter, and how that has affected the CHT
 cooling.
 My O-320 has the prop control located inside the left cowl intake, and
 it seems to me that it affects the intake flow by a large percentage.
For example, cyl 2 CHT, given its location relative to airflow, is the
 hottest cylinder.
 Photos of any cowl remodelling would be appreciated.
 Dom Crain