X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost03.isp.att.net ([207.115.11.53] verified) by logan.com (CommuniGate Pro SMTP 5.4c2) with ESMTP id 4923409 for flyrotary@lancaironline.net; Sat, 26 Mar 2011 12:40:34 -0400 Received-SPF: none receiver=logan.com; client-ip=207.115.11.53; envelope-from=bbradburry@bellsouth.net Received: from desktop (adsl-85-145-79.mco.bellsouth.net[98.85.145.79]) by isp.att.net (frfwmhc03) with SMTP id <20110326163957H0300orsmre>; Sat, 26 Mar 2011 16:39:57 +0000 X-Originating-IP: [98.85.145.79] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" References: In-Reply-To: Subject: Re: On the subject of installations...Coolant Pressure Date: Sat, 26 Mar 2011 12:39:57 -0400 Message-ID: <27FEF6B9DE5A460A8AB732E596B451CA@Desktop> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0000_01CBEBB2.EA47A120" X-Mailer: Microsoft Office Outlook 11 Thread-Index: AcvrdHTjNw6of9U7SQ2sNJNzv6jMZAAXqiFQ X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6001.18049 This is a multi-part message in MIME format. ------=_NextPart_000_0000_01CBEBB2.EA47A120 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I checked the coolant in the radiator for oil residue floating on top and found none. The radiator was completely full with no air. I removed a plug from each rotor and turned the engine over looking for water coming out of the plug holes.nothing. It appears to me that the o-rings are not failed and the high coolant pressure is not coming from a leak from the combustion chambers. I have located a borescope and I plan to inspect the inside of the radiator tank on the inlet side. I also plan to remove the water pump and inspect as far inside the coolant passages as I can see looking for an obstruction. Do I need to replace the gasket on the water pump when I reinstall it? Do I need to use any sealant? What say ye who have removed/replaced water pumps? If the o-rings are ok and if I don't find an obstruction, any other ideas as to the cause of the high water pressure?? What about any suggested tests??? Bill B ------=_NextPart_000_0000_01CBEBB2.EA47A120 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

I checked the coolant in the = radiator for oil residue floating on top and found none.  The radiator was = completely full with no air.  I removed a plug from each rotor and turned the = engine over looking for water coming out of the plug holes…nothing.  = It appears to me that the o-rings are not failed and the high coolant pressure is = not coming from a leak from the combustion = chambers.

 

I have located a borescope and I = plan to inspect the inside of the radiator tank on the inlet side.  I also = plan to remove the water pump and inspect as far inside the coolant passages as = I can see looking for an obstruction.

 

Do I need to replace the gasket on = the water pump when I reinstall it?  Do I need to use any = sealant?  What say ye who have removed/replaced water pumps?

 

If the o-rings are ok and if I = don’t find an obstruction, any other ideas as to the cause of the high water pressure??

 

What about any suggested = tests???

 

Bill B

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