Return-Path: Received: from out009.verizon.net ([206.46.170.131] verified) by logan.com (CommuniGate Pro SMTP 4.1.8) with ESMTP id 3065655 for flyrotary@lancaironline.net; Fri, 05 Mar 2004 18:47:46 -0500 Received: from netzero.net ([4.12.145.173]) by out009.verizon.net (InterMail vM.5.01.06.06 201-253-122-130-106-20030910) with ESMTP id <20040305234742.UECI29216.out009.verizon.net@netzero.net> for ; Fri, 5 Mar 2004 17:47:42 -0600 Message-ID: <40491198.3050405@netzero.net> Date: Fri, 05 Mar 2004 18:47:36 -0500 From: Finn Lassen User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax; PROMO) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Ideal Cooling System Plumbing (was References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------060703060504050103040001" X-Authentication-Info: Submitted using SMTP AUTH at out009.verizon.net from [4.12.145.173] at Fri, 5 Mar 2004 17:47:41 -0600 This is a multi-part message in MIME format. --------------060703060504050103040001 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit That's a great idea: two level sensors. One to detect that you are loosing coolant (low coolant level at the waterpump) and the other to detect blowby (higher than normal level in the overflow bottle). Finn Dale Rogers wrote: >Jim Sower wrote: > > > >>>... Blowby from >>>compression and/or combustion gasses forcing air into the coolant system ... >>> >>> >>> > > > >>How long would it take a coolant pressure gauge to pick up on that one?? >> >> >> > > That partly depends on how close your cap pressure is to >the actual operating pressure. It shouldn't take long at >all for an compression/exhaust leak to raise coolant >pressure to the cap pressure. So the change in coolant >pressure should be notable. > > An easy sanity check is a variation on Perry Mick's >method, put a go/no-go "fluid level" detector in the overflow bottle (not the recovery tank). It should normally >be empty, or nearly so. Exhaust in the coolant will fairly >quickly push some liquid past the pressure cap and trigger >the sensor. Late 80's GM V-6's commonly use such a sensor >near the top of the radiator tank - I think the current >cost is about $35.00. > >Dale R. >COZY MkIV-R #1254 > > > > > >>> Homepage: http://www.flyrotary.com/ >>> Archive: http://lancaironline.net/lists/flyrotary/List.html >>> >>> > > > > --------------060703060504050103040001 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit That's a great idea: two level sensors.
One to detect that you are loosing coolant (low coolant level at the waterpump) and the other to detect blowby (higher than normal level in the overflow bottle).

Finn

Dale Rogers wrote:

Jim Sower <canarder@frontiernet.net> wrote:

... Blowby from
compression and/or combustion gasses forcing air into the coolant system ...

How long would it take a coolant pressure gauge to pick up on that one??


   That partly depends on how close your cap pressure is to 
the actual operating pressure.  It shouldn't take long at 
all for an compression/exhaust leak to raise coolant 
pressure to the cap pressure.  So the change in coolant 
pressure should be notable.

   An easy sanity check is a variation on Perry Mick's 
method, put a go/no-go "fluid level" detector in the overflow bottle (not the recovery tank).  It should normally 
be empty, or nearly so.  Exhaust in the coolant will fairly 
quickly push some liquid past the pressure cap and trigger 
the sensor.  Late 80's GM V-6's commonly use such a sensor 
near the top of the radiator tank - I think the current 
cost is about $35.00.

Dale R.
COZY MkIV-R #1254

 Homepage:  http://www.flyrotary.com/
 Archive:   http://lancaironline.net/lists/flyrotary/List.html

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