Subject: [Mgs] Temp Gauge

From: Michael MacLean <[email-masked]>
Date: Mon, 19 Oct 2020 20:58:44 +0000 (UTC)

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Anyone know how I can check the accuracy of my 1969 MGB GT temp gauge?=C2=
=A0 Just a needle and a range, no temp readings.Mike MacLean1969 MGB GT60 B=
ugeye1956 BN2 Lemans

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<html><head></head><body><div class="yahoo-style-wrap" style="font-family:times new roman, new york, times, serif;font-size:16px;"><div dir="ltr" data-setdir="false">Anyone know how I can check the accuracy of my 1969 MGB GT temp gauge?&nbsp; Just a needle and a range, no temp readings.</div><div dir="ltr" data-setdir="false">Mike MacLean</div><div dir="ltr" data-setdir="false">1969 MGB GT</div><div dir="ltr" data-setdir="false">60 Bugeye</div><div dir="ltr" data-setdir="false">1956 BN2 Lemans<br></div></div></body></html>
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From: Robert's New iPad <[email-masked]>
Date: Mon, 19 Oct 2020 17:40:23 -0400

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   There are two methods I have used.
   Drive around until the gauge shows whatever normal is for your car, but d=
o this with the rad cap loose so there is no pressure building.  Leave engin=
e running and remove the cap, immersing a kitchen =E2=80=9Ccandy=E2=80=9D th=
ermometer into the liquid.  You will then be able to associate needle positi=
on with a known temperature.=20
   Drive around and get everything warm, then use an infra-red thermometer, a=
bout $30 at Harbour Freight, taking temp of the thermostat housing and radia=
tor top tank.  This will also help you to associate a point on the gauge to t=
he thermometer reading.
  The IR thermometer has additional value, in that you can shoot it all arou=
nd the radiator front side, checking that temp is equal side-to-side.  Botto=
m should be a bit lower than top, because the cooled water is moving down, a=
nd with this you can see how it happens.
Bob

> On Oct 19, 2020, at 4:58 PM, Michael MacLean <[email-masked]> wro=
te:
>=20
> Anyone know how I can check the accuracy of my 1969 MGB GT temp gauge?  Ju=
st a needle and a range, no temp readings.
> Mike MacLean
> 1969 MGB GT
> 60 Bugeye
> 1956 BN2 Lemans
>=20
> Donate: http://www.team.net/donate.html
> Suggested annual donation  $12.75
>=20
>=20
> Unsubscribe: http://autox.team.net/mailman/options/mgs/[email-masked]

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<html><head><meta http-equiv=3D"content-type" content=3D"text/html; charset=3D=
utf-8"></head><body dir=3D"auto"><div dir=3D"ltr"></div><div dir=3D"ltr">&nb=
sp; &nbsp;There are two methods I have used.</div><div dir=3D"ltr">&nbsp; &n=
bsp;Drive around until the gauge shows whatever normal is for your car, but d=
o this with the rad cap loose so there is no pressure building. &nbsp;Leave e=
ngine running and remove the cap, immersing a kitchen =E2=80=9Ccandy=E2=80=9D=
 thermometer into the liquid. &nbsp;You will then be able to associate needl=
e position with a known temperature.&nbsp;</div><div dir=3D"ltr">&nbsp; &nbs=
p;Drive around and get everything warm, then use an infra-red thermometer, a=
bout $30 at Harbour Freight, taking temp of the thermostat housing and radia=
tor top tank. &nbsp;This will also help you to associate a point on the gaug=
e to the thermometer reading.</div><div dir=3D"ltr">&nbsp; The IR thermomete=
r has additional value, in that you can shoot it all around the radiator fro=
nt side, checking that temp is equal side-to-side. &nbsp;Bottom should be a b=
it lower than top, because the cooled water is moving down, and with this yo=
u can see how it happens.</div><div dir=3D"ltr">Bob</div><div dir=3D"ltr"><b=
r></div><div dir=3D"ltr"><br>On Oct 19, 2020, at 4:58 PM, Michael MacLean &l=
t;<a href=3D"mailto:[email-masked]">[email-masked]</a>&gt;=
 wrote:<br><br></div><blockquote type=3D"cite"><div dir=3D"ltr"><div class=3D=
"yahoo-style-wrap" style=3D"font-family:times new roman, new york, times, se=
rif;font-size:16px;"><div dir=3D"ltr" data-setdir=3D"false">Anyone know how I=
 can check the accuracy of my 1969 MGB GT temp gauge?&nbsp; Just a needle an=
d a range, no temp readings.</div><div dir=3D"ltr" data-setdir=3D"false">Mik=
e MacLean</div><div dir=3D"ltr" data-setdir=3D"false">1969 MGB GT</div><div d=
ir=3D"ltr" data-setdir=3D"false">60 Bugeye</div><div dir=3D"ltr" data-setdir=
=3D"false">1956 BN2 Lemans<br></div></div></div></blockquote><blockquote typ=
e=3D"cite"><div dir=3D"ltr"><span>__________________________________________=
_____</span><br><span></span><br><span><a href=3D"mailto:[email-masked]"=
>[email-masked]</a></span><br><span>Donate: <a href=3D"http://www.team.n=
et/donate.html">http://www.team.net/donate.html</a></span><br><span>Suggeste=
d annual donation &nbsp;$12.75</span><br><span></span><br><span>Archive: <a h=
ref=3D"http://www.team.net/pipermail/mgs">http://www.team.net/pipermail/mgs<=
/a> <a href=3D"http://autox.team.net/archive">http://autox.team.net/archive<=
/a></span><br><span></span><br><span>Unsubscribe: <a href=3D"http://autox.te=
am.net/mailman/options/mgs/[email-masked]">http://autox.team.net/mailman/o=
ptions/mgs/[email-masked]</a></span><br></div></blockquote></body></html>=

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[email-masked]

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From: James Schulte <[email-masked]>
Date: Mon, 19 Oct 2020 22:56:12 +0000

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I use a portable laser gage.
Jim

Sent via the Samsung Galaxy S10e, an AT&T 5G Evolution capable smartphone

-------- Original message --------
From: Michael MacLean <[email-masked]>
Date: 10/19/20 4:59 PM (GMT-05:00)
To: MGB List <[email-masked]>
Subject: [Mgs] Temp Gauge

Anyone know how I can check the accuracy of my 1969 MGB GT temp gauge?  Jus=
t a needle and a range, no temp readings.
Mike MacLean
1969 MGB GT
60 Bugeye
1956 BN2 Lemans

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</head>
<body>
<div dir=3D"auto">I use a portable laser gage.</div>
<div dir=3D"auto">Jim</div>
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto"><br>
</div>
<div dir=3D"auto"><br>
</div>
<div id=3D"composer_signature" dir=3D"auto">
<div dir=3D"auto" style=3D"font-size:85%; color:#575757">Sent via the Samsu=
ng Galaxy S10e, an AT&amp;T 5G Evolution capable smartphone</div>
</div>
<div dir=3D"auto"><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>-------- Original message --------</div>
<div>From: Michael MacLean &lt;[email-masked]&gt; </div>
<div>Date: 10/19/20 4:59 PM (GMT-05:00) </div>
<div>To: MGB List &lt;[email-masked]&gt; </div>
<div>Subject: [Mgs] Temp Gauge </div>
<div><br>
</div>
<div>
<div class=3D"yahoo-style-wrap" style=3D"font-family:times new roman,new yo=
rk,times,serif; font-size:16px">
<div dir=3D"ltr">Anyone know how I can check the accuracy of my 1969 MGB GT=
 temp gauge?&nbsp; Just a needle and a range, no temp readings.</div>
<div dir=3D"ltr">Mike MacLean</div>
<div dir=3D"ltr">1969 MGB GT</div>
<div dir=3D"ltr">60 Bugeye</div>
<div dir=3D"ltr">1956 BN2 Lemans<br>
</div>
</div>
</div>
</body>
</html>

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[email-masked]

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From: "PaulHunt73" <[email-masked]>
Date: Tue, 20 Oct 2020 08:29:44 +0100 GuT5mGT/4nM1R1YMgW5hPuNQ25rjPWhROCrjG96f4B8t2qD9/YSzFcgKIZhEoTS94zpW/aB8egvSD9muNFidyI77eljzG/cf7rzsIz7ncj7ZjCmFubktvoC4

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So called 'laser' devices may well have a small red spot to show where =
it is pointing, but the measurement area is much wider than that as the =
sensed area is cone-shaped i.e. it gets wider the further out you go in =
some case by as much as 2:1.  The smaller the physical object that you =
want to measure the closer you have to be or it averages cooler areas =
around it.  Yes I know an engine is pretty big, but it isn't all at the =
same temperature.  For the thermostat elbow for example it has to be =
almost touching.

More for running hot than anything else but yes measuring various areas =
over the surface of the rad will show up problems with flow rate, =
partially blocked core where the cause is insufficient cooling, or that =
the engine is producing more than it should.
  ----- Original Message -----=20

     There are two methods I have used.
  ...
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<DIV><FONT size=3D2>So called 'laser' devices may well have a small red =
spot to=20
show where it is pointing, but the measurement area is much wider than =
that as=20
the sensed area is cone-shaped i.e. it gets wider the further out you go =
in some=20
case by as much as 2:1.&nbsp; The smaller the physical object that you =
want to=20
measure the closer you have to be or it averages cooler areas around =
it.&nbsp;=20
Yes I know an engine is pretty big, but it isn't all at the same=20
temperature.&nbsp; For the thermostat elbow for example it has to be =
almost=20
touching.</FONT></DIV>
<DIV><FONT size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT size=3D2>More for running hot than anything else but yes =
measuring=20
various areas over the surface of the rad will show up =
problems&nbsp;with flow=20
rate, partially blocked core where the cause is insufficient cooling, or =
that=20
the engine is producing more than it should.</FONT></DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; =
PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
  <DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
  <DIV><FONT size=3D2></FONT><FONT size=3D2></FONT><FONT =
size=3D2></FONT><FONT=20
  size=3D2></FONT><BR></DIV>
  <DIV dir=3Dltr></DIV>
  <DIV dir=3Dltr>&nbsp; &nbsp;There are two methods I have used.</DIV>
  <DIV dir=3Dltr>...</DIV></BLOCKQUOTE></BODY></HTML>

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