From: "Neil Unger 12348ung@gmail.com" <flyrotary@lancaironline.net>
Received-SPF: pass
 receiver=logan.com; client-ip=209.85.210.181; envelope-from=12348ung@gmail.com
Subject: Re: [FlyRotary] Overheated coolant
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
References: <list-12906810@logan.com>
Message-ID: <8439982f-9f9c-21ea-ba32-2c2202041edc@gmail.com>
Date: Fri, 30 Aug 2019 15:57:36 +1000
User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101
 Thunderbird/60.8.0
MIME-Version: 1.0
In-Reply-To: <list-12906810@logan.com>
Content-Type: multipart/alternative;
 boundary="------------3100DF60A00DD577010E1253"
Content-Language: en-US

This is a multi-part message in MIME format.
--------------3100DF60A00DD577010E1253
Content-Type: text/plain; charset=utf-8; format=flowed
Content-Transfer-Encoding: 8bit

Mat,

               This is annoying and no consolation, but do not read any 
bad news into this until you get it apart.  The oil may have compensated 
for the hot water.  All the best,  Neil.

On 8/30/2019 2:57 PM, Matt Boiteau mattboiteau@gmail.com wrote:
>
> Well ran into a little bit of a snag on my RX8 engine….
> While trying different things to cool down the oil, during high-speed 
> taxi tests I managed to blow out the temporary clear level tube on my 
> coolant expansion tank, which lead to pressure loss, which caused it 
> to overheat. Managed to shut down near the hanger and get a water hose 
> on the rads, but I feel the engine got baked underneath the fiberglass 
> cowl. *Future note, need to come up with some flaps that open after 
> shutdown or something, to let the heat escape out. Maybe even an 
> electric fan that runs for 5 minutes after shutdown*
>
> I know I blew some type of coolant gasket, but unsure if the irons are 
> warped. Going to take apart next weekend. Just wanted to run by my 
> list of mods, to see if I need to change anything or add/remove.
>
> 25hours, 99% ground testing
> The iron plates were lapped and renitraded
> Rotor housings were new and welded in P-Ports
> RotaryAviation master kit (RA super seals)
>
> _Oil
> _~125psi at full throttle
> 20w50 VR1 high zinc
> RX7 rear pressure regulator
> 2 washers under front pressure regulator
> weber jet kit
> thermal pellet
>
>
> _Coolant
> _1.3bar cap
> ECU says ~27psi at full throttle, not sure I believe that yet. Lots of 
> noise at full throttle on my pressure sensors (pic attached)
> 70/30 Zerex G-05
>
> I’ll order the Atkins oring kit, supposedly their brown inner water 
> jacket seals can handle a bit higher temps. 
> https://www.atkinsrotary.com/store/04-11-Rx8-O-Ring-Kit-ARE317.html
>
>
> - Matt Boiteau
>
> --
> Homepage:  http://www.flyrotary.com/
> Archive and UnSub:   http://mail.lancaironline.net:81/lists/flyrotary/List.html

--------------3100DF60A00DD577010E1253
Content-Type: text/html; charset=utf-8
Content-Transfer-Encoding: 8bit

<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
  </head>
  <body text="#000000" bgcolor="#FFFFFF">
    <p>Mat,</p>
    <p>              This is annoying and no consolation, but do not
      read any bad news into this until you get it apart.  The oil may
      have compensated for the hot water.  All the best,  Neil.<br>
    </p>
    <div class="moz-cite-prefix">On 8/30/2019 2:57 PM, Matt Boiteau
      <a class="moz-txt-link-abbreviated" href="mailto:mattboiteau@gmail.com">mattboiteau@gmail.com</a> wrote:<br>
    </div>
    <blockquote type="cite" cite="mid:list-12906810@logan.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div id="__MailbirdStyleContent" style="font-size:
        10pt;font-family: Arial;color: #000000">
        <p class="MsoNormal">Well ran into a little bit of a snag on my
          RX8 engine….<br>
          While trying different things to cool down the oil, during
          high-speed taxi
          tests I managed to blow out the temporary clear level tube on
          my coolant
          expansion tank, which lead to pressure loss, which caused it
          to overheat.
          Managed to shut down near the hanger and get a water hose on
          the rads, but I
          feel the engine got baked underneath the fiberglass cowl.
          *Future note, need to
          come up with some flaps that open after shutdown or something,
          to let the heat
          escape out. Maybe even an electric fan that runs for 5 minutes
          after shutdown*<br>
          <br>
          I know I blew some type of coolant gasket, but unsure if the
          irons are warped.
          Going to take apart next weekend. Just wanted to run by my
          list of mods, to see
          if I need to change anything or add/remove.<br>
          <br>
          25hours, 99% ground testing<br>
          The iron plates were lapped and renitraded <br>
          Rotor housings were new and welded in P-Ports<br>
          RotaryAviation master kit (RA super seals)<br>
          <br>
          <u>Oil<br>
          </u>~125psi at full throttle<br>
          20w50 VR1 high zinc<br>
          RX7 rear pressure regulator<br>
          2 washers under front pressure regulator<br>
          weber jet kit<br>
          thermal pellet<o:p></o:p></p>
        <p class="MsoNormal"><br>
          <u>Coolant<br>
          </u>1.3bar cap<br>
          ECU says ~27psi at full throttle, not sure I believe that yet.
          Lots of noise at
          full throttle on my pressure sensors (pic attached)<br>
          70/30 Zerex G-05<o:p></o:p></p>
        <p class="MsoNormal"><o:p> </o:p></p>
        <p class="MsoNormal">I’ll order the Atkins oring kit, supposedly
          their brown
          inner water jacket seals can handle a bit higher temps. <a
href="https://www.atkinsrotary.com/store/04-11-Rx8-O-Ring-Kit-ARE317.html"
            moz-do-not-send="true">https://www.atkinsrotary.com/store/04-11-Rx8-O-Ring-Kit-ARE317.html</a><o:p></o:p></p>
        <div><br>
        </div>
        <div class="mb_sig">- Matt Boiteau</div>
      </div>
      <br>
      <fieldset class="mimeAttachmentHeader"></fieldset>
      <pre class="moz-quote-pre" wrap="">--
Homepage:  <a class="moz-txt-link-freetext" href="http://www.flyrotary.com/">http://www.flyrotary.com/</a>
Archive and UnSub:   <a class="moz-txt-link-freetext" href="http://mail.lancaironline.net:81/lists/flyrotary/List.html">http://mail.lancaironline.net:81/lists/flyrotary/List.html</a>
</pre>
    </blockquote>
  </body>
</html>

--------------3100DF60A00DD577010E1253--