X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from ms-smtp-07.texas.rr.com ([24.93.47.46] verified) by logan.com (CommuniGate Pro SMTP 5.1.12) with ESMTP id 2369697 for flyrotary@lancaironline.net; Fri, 05 Oct 2007 00:03:08 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.93.47.46; envelope-from=clouduster@austin.rr.com Received: from [10.0.0.99] (cpe-70-113-77-184.austin.res.rr.com [70.113.77.184]) by ms-smtp-07.texas.rr.com (8.13.6/8.13.6) with ESMTP id l9542S8Q017764 for ; Thu, 4 Oct 2007 23:02:28 -0500 (CDT) Message-ID: <4705B74F.7010309@austin.rr.com> Date: Thu, 04 Oct 2007 23:02:23 -0500 From: Dennis Haverlah User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Problem? [FlyRotary] Re: Coolant Water Pressure References: In-Reply-To: Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Symantec AntiVirus Scan Engine Bill, When I first started running my Renesis I had heating problems similar to yours. I found out that air could be trapped in the water pump and the impeller would never pump any water because of the air the impeller was spinning in. I put a spigot on the top of the thermostat housing. My radiator and engine block have small bleed lines on the high points returning any air to my air/water separator- reservoir tank. When filling I open the spigot and fill my system. The filler tank is slightly higher than the spigot. When full, all the air has been pushed out of the whole system. This is by design per Al Wick's recommendation. You should be able to tell if water is flowing by making sure the end tanks of the radiator are both getting hot. I have a dual pass radiator and have not had any indication that the water flow rate is reduced significantly. Dennis H.