Andrew, I would say from my trials and tribulations that the ability to over-cool is a must.  Yes you then have to install either a thermostat, cowl-flap, diffuser-damper or some means to decrease either water or air flow.  Otherwise your installation will only work properly over a narrow band of temperature, airspeed and/or power settings. Designing for cruise doesn't cut it either, as you need the ability to climb. Using 100% synthetic oil removes several worries: flammability (if it leaks it doesn't burn easily) cold oil is no longer an issue (better flow) and as others have pointed out better cooling due to less foaming.

Jeff Whaley
CFJWW, Chubby Cubby, 13B (123 hrs)

-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net]
Sent: August-04-17 6:01 AM
To: Rotary motors in aircraft
Subject: flyrotary Digest #4479

        Rotary motors in aircraft Digest #4479

 1) Making noise again.
    by Andrew Martin
 2) Re: Making noise again.
    by Tom Mann
 3) Re: Making noise again.
    by flyrotary
 4) Re: Making noise again.
    by Neil Unger
 5) Re: Making noise again.
    by Andrew Martin
 6) Re: Making noise again.
    by Neil Unger
 7) Re: Making noise again.
    by Andrew Martin
 8) Re: Making noise again.
    by Neil Unger
 9) Re: Making noise again.
    by Andrew Martin

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