From: "Neil Unger 12348ung@gmail.com" <flyrotary@lancaironline.net>
Received-SPF: pass
 receiver=logan.com; client-ip=74.125.83.41; envelope-from=12348ung@gmail.com
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Subject: heating problem
Message-ID: <0b32052d-d7b3-2f36-f65b-80a502702cda@gmail.com>
Date: Sun, 5 Nov 2017 08:38:16 +1100
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:52.0) Gecko/20100101
 Thunderbird/52.4.0
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 8bit
Content-Language: en-US

Steve,  Chris is correct, I had a "vulcano" with my newly built motor!   
Pressure test revealed nothing, but with the engine at idle and looking 
in the through the radiator cap it kept producing small bubbles about 
every few seconds.  Hard to get a good look with that great fan 
whistling past your ear!  The engine ran perfectly and after about 3 - 5 
minutes suddenly I had coolant all over the screen.  It kept building up 
pressure until it vented in a big way.  Stripped down and nothing 
obvious except that my ":expert" engine builder was very "Fast".  No 
attentions to detail in cleaning off the plates which must have let a 
small leak between the water jacket and the combustion chamber.  Used 
tracy,s O rings, but yet to start due to day jobs in the road.  I have 
filled the water, so to see how much ends up in the sump!! Regards,  Neil