Return-Path: Sender: (Marvin Kaye) To: flyrotary Date: Mon, 19 May 2003 10:20:55 -0400 Message-ID: X-Original-Return-Path: Received: from ms-smtp-03.southeast.rr.com ([24.93.67.84] verified) by logan.com (CommuniGate Pro SMTP 4.1b6) with ESMTP id 2353237 for flyrotary@lancaironline.net; Sun, 18 May 2003 07:10:34 -0400 Received: from mail3.carolina.rr.com (fe3 [24.93.67.50]) by ms-smtp-03.southeast.rr.com (8.12.5/8.12.2) with ESMTP id h4IB8mMq010135 for ; Sun, 18 May 2003 07:08:48 -0400 (EDT) Received: from o7y6b5 ([24.25.90.99]) by mail3.carolina.rr.com with Microsoft SMTPSVC(5.5.1877.757.75); Sun, 18 May 2003 07:07:16 -0400 X-Original-Message-ID: <003201c31d2f$26893320$1702a8c0@WorkGroup> From: "Ed Anderson" X-Original-To: "Rotary motors in aircraft" References: Subject: Re: [FlyRotary] Re: coolant / thermostat X-Original-Date: Sun, 18 May 2003 07:18:03 -0400 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2800.1106 X-MIMEOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 > > > Posted for "wadebush" : > > Ed, > Are there any pictures of this procedure or can you describe the procedure > in more detail? > Wade > Wade, I do not have any photos of the process, however, it is fairly simple. If you take the thermostat housing off the water pump and look inside, you will see directly below where the thermostat sits a hole in the pump housing wall approx 1/2" in diameter. You can't miss it, its the only 1/2" hole there. Its the right size to take either a 1/2" or 5/8" NPT tap (I am almost certain it is 1/2"). You can get bronze plugs for that size from you local hardward store (used to plug gas pipes) or aluminum plugs (recommened) from the places that sells AN type fittings. Its been six years and memory is a bit fuzzy, but I am fairly certain that I did not have to drill out or enlarge the hole. Just find a socket that the square end of the tap will fit into snuggly and put it on the end of a 3-6" extention. Then carefully insert the end of the tap into the hole and begin to turn it CCW. Try to maintain a perpendicular position at all times. The tap will catch and slowly cut its way into the hole leaving you with threads for your plug. Stuff cotton or something to catch the metal chips and then flush from the other side of the water pump. Be very careful not to exert side force on the tap. They are fairly brittle and won't take much side force. Ed