Re: [Healeys] Core plug query

[Michael Oritt <michael.oritt@gmail.com>]

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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 10:39=E2=80=AFAM 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 woul=
d
> 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.165=
9464/
>
> On 10/31/2025 5:08 AM, Simon Lachlan via Healeys wrote:
>
>  I saw this on Facebook just now. Just curious=E2=80=A6.what=E2=80=99s th=
at thing in the
> middle of the core plug? And, if it=E2=80=99s a good thing, why don=E2=80=
=99t all the
> plugs have one?
>
> Thanks, Simon
>
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<div dir=3D"ltr"><div class=3D"gmail_default" style=3D"color:#3333ff">Good =
catch Bob!=C2=A0 Wow, it wouldn&#39;t be such a super thing to have the plu=
g go away....</div><div class=3D"gmail_default" style=3D"color:#3333ff"><br=
></div><div class=3D"gmail_default" style=3D"color:#3333ff">Best--Michael O=
ritt=C2=A0</div></div><br><div class=3D"gmail_quote gmail_quote_container">=
<div dir=3D"ltr" class=3D"gmail_attr">On Fri, Oct 31, 2025 at 10:39=E2=80=
=AFAM Bob Spidell via Healeys &lt;<a href=3D"mailto:healeys@autox.team.net"=
>healeys@autox.team.net</a>&gt; wrote:<br></div><blockquote class=3D"gmail_=
quote" style=3D"margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,=
204);padding-left:1ex"><u></u>

 =20
   =20
 =20
  <div>
    I did a little diggin ...=C2=A0<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=3D"https://www.toyotanation.com/threads/mysterious-plugs-in-engine-=
block.1659464/" target=3D"_blank">https://www.toyotanation.com/threads/myst=
erious-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=3D"cite">
     =20
     =20
     =20
     =20
      <p dir=3D"LTR"><span lang=3D"en-gb"></span><span lang=3D"en-gb"></spa=
n><span lang=3D"en-gb"></span><span lang=3D"en-gb">=C2=A0<font face=3D"Apto=
s">I
            saw this on Facebook</font></span><span lang=3D"en-gb"></span><=
span lang=3D"en-gb"></span><span lang=3D"en-gb"><font face=3D"Aptos">
            just now. Just curious=E2=80=A6.what</font></span><span lang=3D=
"en-gb"></span><span lang=3D"en-gb"></span><span lang=3D"en-gb"><font face=
=3D"Aptos">=E2=80=99s</font></span><span lang=3D"en-gb"></span><span lang=
=3D"en-gb"></span><span lang=3D"en-gb"><font face=3D"Aptos"> that thing in =
the middle of
            th</font></span><span lang=3D"en-gb"></span><span lang=3D"en-gb=
"></span><span lang=3D"en-gb"><font face=3D"Aptos">e</font></span><span lan=
g=3D"en-gb"></span><span lang=3D"en-gb"></span><span lang=3D"en-gb"> <font =
face=3D"Aptos">core plug</font></span><span lang=3D"en-gb"></span><span lan=
g=3D"en-gb"></span><span lang=3D"en-gb"><font face=3D"Aptos">? And</font></=
span><span lang=3D"en-gb"></span><span lang=3D"en-gb"></span><span lang=3D"=
en-gb"><font face=3D"Aptos">,</font></span><span lang=3D"en-gb"></span><spa=
n lang=3D"en-gb"></span><span lang=3D"en-gb"><font face=3D"Aptos"> if it=E2=
=80=99s a good thing, why</font></span><span lang=3D"en-gb"></span><span la=
ng=3D"en-gb"></span><span lang=3D"en-gb"> <font face=3D"Aptos">don=E2=80=99=
t all the plugs have
            one? </font></span></p>
      <p dir=3D"LTR"><span lang=3D"en-gb"><font face=3D"Aptos">Thanks, Simo=
n</font></span><span lang=3D"en-gb"></span><span lang=3D"en-gb"></span><spa=
n lang=3D"en-gb"></span></p>
      <br>
    </blockquote>
  </div>

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