X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from fmailhost04.isp.att.net ([204.127.217.104] verified) by logan.com (CommuniGate Pro SMTP 5.1.12) with ESMTP id 2364861 for flyrotary@lancaironline.net; Tue, 02 Oct 2007 17:07:00 -0400 Received-SPF: pass receiver=logan.com; client-ip=204.127.217.104; envelope-from=bbradburry@bellsouth.net Received: from arptk8ng400 (adsl-146-124-76.mco.bellsouth.net[72.146.124.76]) by bellsouth.net (frfwmhc04) with SMTP id <20071002210623H0400fm5rie>; Tue, 2 Oct 2007 21:06:24 +0000 X-Originating-IP: [72.146.124.76] From: "Bill Bradburry" To: "'Rotary motors in aircraft'" In-Reply-To: Subject: RE: [FlyRotary] Re: Coolant Water Pressure Date: Tue, 2 Oct 2007 17:06:21 -0400 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0009_01C80516.90893670" X-Mailer: Microsoft Office Outlook, Build 11.0.5510 Thread-Index: AcgFGB1cAbsw2hXsQ72zeyivHYHR6AAHyeAg X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6000.16480 Message-ID: This is a multi-part message in MIME format. ------=_NextPart_000_0009_01C80516.90893670 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit I am measuring the pressure at a port just under the radiator cap on the radiator. I have a "T" there and the pressure sender is on one side and the other side is connected to a hose going to the small (1/4"?) port at the top rear of the rear iron. This hose is to bleed off any air in the block---hope! I am also thinking that this pressure is too high, but I don't know why. Bill B _____ From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Jeff Whaley Sent: Tuesday, October 02, 2007 1:13 PM To: Rotary motors in aircraft Subject: [FlyRotary] Re: Coolant Water Pressure Bill, where are you measuring your pressure? If you measure in the block or at the pump outlet you'll get unusually high, false readings. With a 22 lb cap you can't actually achieve 27 psi, as the cap will burp it to the over flow and reduce the pressure. I suggest you measure the pressure from an expansion tank connected to the inlet side of the pump. The stock Mazda cap is only 13 lbs . there is no reason to see even 22 psi. JWW ------=_NextPart_000_0009_01C80516.90893670 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable

 

I am measuring the pressure at a = port just under the radiator cap on the radiator.  I have a “T” = there and the pressure sender is on one side and the other side is connected = to a hose going to the small (1/4”?) port at the top rear of the rear = iron.  This hose is to bleed off any air in the = block---hope!

I am also thinking that this = pressure is too high, but I don’t know why.

 

Bill B

From: = Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Jeff Whaley
Sent: Tuesday, October = 02, 2007 1:13 PM
To: Rotary motors in = aircraft
Subject: [FlyRotary] Re: = Coolant Water Pressure

 

Bill, where are you measuring your pressure? If you measure in the block or at the pump outlet you’ll = get unusually high, false readings.

With a 22 lb cap you can’t = actually achieve 27 psi, as the cap will burp it to the over flow and reduce the pressure.

I suggest you measure the pressure = from an expansion tank connected to the inlet side of the = pump.

The stock Mazda cap is only 13 lbs = … there is no reason to see even 22 psi.

JWW

 

 

------=_NextPart_000_0009_01C80516.90893670--