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Re: [Healeys] Core plug query

To: Michael Oritt <michael.oritt@gmail.com>, Bob Spidell <bspidell@comcast.net>
Subject: Re: [Healeys] Core plug query
From: David Nock via Healeys <healeys@autox.team.net>
Date: Fri, 31 Oct 2025 09:33:03 -0700
Cc: healeys@autox.team.net
Delivered-to: mharc@autox.team.net
Delivered-to: healeys@autox.team.net
Organization: British Car Specialists mail.backend.jedi.jws.acl:role.jedi.acl.token.atz.jws.hermes.yahoo
References: <002801dc4a5f$0751eb70$15f5c250$@alexarevel.plus.com> <17b34936-d225-4a88-973e-3eb710291730@comcast.net> <CAPTa0B7M8jcMeX7QS6KQw3XG9JpVUPx-mdir6jh1qL18VpHnLA@mail.gmail.com>
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That is at tab that we install on all engines after repairing cooling 
systems, or rebuilds. They are desigened to fall off it the engine is 
overheated. We usually install on one of the rear core plugs.

-- 
David Nock
British Car Specialists
Stockton Ca
209 948 8767
www.britishcarspecialists.com



On 10/31/2025 8:44 AM, Michael Oritt wrote:
> Good catch Bob!  Wow, it wouldn't be such a super thing to have the 
> plug go away....
>
> Best--Michael Oritt
>
> On Fri, Oct 31, 2025 at 10:39â?¯AM Bob Spidell via Healeys 
> <healeys@autox.team.net> wrote:
>
>     I did a little diggin ...
>
>     Apparently, they are designed to melt if the engine overheats,
>     which would be grounds for voiding the warranty on a re-man. I
>     wonder if the plug is made of bismuth, which is what sets off
>     automatic fire sprinklers.
>
>     
> https://www.toyotanation.com/threads/mysterious-plugs-in-engine-block.1659464/
>
>     On 10/31/2025 5:08 AM, Simon Lachlan via Healeys wrote:
>>
>>     I saw this on Facebookjust now. Just curiousâ?¦.whatâ??sthat thing in
>>     the middle of thecore plug? And,if itâ??s a good thing, whydonâ??t
>>     all the plugs have one?
>>
>>     Thanks, Simon
>>
>>
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    <p>That is at tab that we install on all engines after repairing
      cooling systems, or rebuilds. They are desigened to fall off it
      the engine is overheated. We usually install on one of the rear
      core plugs.</p>
    <pre class="moz-signature" cols="72">-- 
David Nock
British Car Specialists
Stockton Ca  
209 948 8767
<a class="moz-txt-link-abbreviated" 
href="http://www.britishcarspecialists.com";>www.britishcarspecialists.com</a></pre>
    <p><br>
    </p>
    <p><br>
    </p>
    <div class="moz-cite-prefix">On 10/31/2025 8:44 AM, Michael Oritt
      wrote:<br>
    </div>
    <blockquote type="cite"
cite="mid:CAPTa0B7M8jcMeX7QS6KQw3XG9JpVUPx-mdir6jh1qL18VpHnLA@mail.gmail.com">
      <meta http-equiv="content-type" content="text/html; charset=UTF-8">
      <div dir="ltr">
        <div class="gmail_default" style="color:#3333ff">Good catch
          Bob!  Wow, it wouldn't be such a super thing to have the plug
          go away....</div>
        <div class="gmail_default" style="color:#3333ff"><br>
        </div>
        <div class="gmail_default" style="color:#3333ff">Best--Michael
          Oritt </div>
      </div>
      <br>
      <div class="gmail_quote gmail_quote_container">
        <div dir="ltr" class="gmail_attr">On Fri, Oct 31, 2025 at
          10:39â?¯AM Bob Spidell via Healeys &lt;<a
            href="mailto:healeys@autox.team.net"; moz-do-not-send="true"
            class="moz-txt-link-freetext">healeys@autox.team.net</a>&gt;
          wrote:<br>
        </div>
        <blockquote class="gmail_quote"
style="margin:0px 0px 0px 0.8ex;border-left:1px solid 
rgb(204,204,204);padding-left:1ex">
          <div> I did a little diggin ... <br>
            <br>
            Apparently, they are designed to melt if the engine
            overheats, which would be grounds for voiding the warranty
            on a re-man. I wonder if the plug is made of bismuth, which
            is what sets off automatic fire sprinklers.<br>
            <br>
            <a
href="https://www.toyotanation.com/threads/mysterious-plugs-in-engine-block.1659464/";
              target="_blank" moz-do-not-send="true"
              
class="moz-txt-link-freetext">https://www.toyotanation.com/threads/mysterious-plugs-in-engine-block.1659464/</a><br>
            <br>
            <div>On 10/31/2025 5:08 AM, Simon Lachlan via Healeys wrote:<br>
            </div>
            <blockquote type="cite">
              <p dir="LTR"><span lang="en-gb"></span><span 
lang="en-gb"></span><span
                  lang="en-gb"></span><span lang="en-gb"> <font
                    face="Aptos">I saw this on Facebook</font></span><span
                  lang="en-gb"></span><span lang="en-gb"></span><span
                  lang="en-gb"><font face="Aptos"> just now. Just
                    curiousâ?¦.what</font></span><span lang="en-gb"></span><span
                  lang="en-gb"></span><span lang="en-gb"><font
                    face="Aptos">â??s</font></span><span 
lang="en-gb"></span><span
                  lang="en-gb"></span><span lang="en-gb"><font
                    face="Aptos"> that thing in the middle of 
th</font></span><span
                  lang="en-gb"></span><span lang="en-gb"></span><span
                  lang="en-gb"><font face="Aptos">e</font></span><span
                  lang="en-gb"></span><span lang="en-gb"></span><span
                  lang="en-gb"> <font face="Aptos">core plug</font></span><span
                  lang="en-gb"></span><span lang="en-gb"></span><span
                  lang="en-gb"><font face="Aptos">? And</font></span><span
                  lang="en-gb"></span><span lang="en-gb"></span><span
                  lang="en-gb"><font face="Aptos">,</font></span><span
                  lang="en-gb"></span><span lang="en-gb"></span><span
                  lang="en-gb"><font face="Aptos"> if itâ??s a good thing,
                    why</font></span><span lang="en-gb"></span><span
                  lang="en-gb"></span><span lang="en-gb"> <font
                    face="Aptos">donâ??t all the plugs have one? 
</font></span></p>
              <p dir="LTR"><span lang="en-gb"><font face="Aptos">Thanks,
                    Simon</font></span><span lang="en-gb"></span><span
                  lang="en-gb"></span><span lang="en-gb"></span></p>
              <br>
            </blockquote>
          </div>
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