<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<p>I'm not saying it's a good idea or a bad idea, but just be aware
that the water in the head (and block) is at a higher pressure
than the water in the radiator. If you have, say, a 12 psi cap on
the header tank and it's plumbed to the head it may overflow.</p>
<p>We discovered that on Jack's car when he put a radiator cap on
top of the thermostat housing so he could fill from the high
point. We ended up blocking off the overflow there and just using
the one on the radiator itself for that purpose. The radiator cap
on the t-stat housing made filling the car with water a breeze
after that.</p>
<p>Cheers, Tony Drews</p>
<div class="moz-cite-prefix">On 1/20/2026 3:19 PM, Michael Moore via
Fot wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CH2PR04MB685667282B7F8F334B4281CAB489A@CH2PR04MB6856.namprd04.prod.outlook.com">
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<meta name="Generator"
content="Microsoft Word 15 (filtered medium)">
<!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]-->
<style>@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}@font-face
{font-family:Aptos;}@font-face
{font-family:"PPC Handwriting";}p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0in;
font-size:12.0pt;
font-family:"Aptos",sans-serif;}a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}span.EmailStyle19
{mso-style-type:personal-reply;
font-family:"Aptos",sans-serif;
color:windowtext;}.MsoChpDefault
{mso-style-type:export-only;
font-size:10.0pt;
mso-ligatures:none;}div.WordSection1
{page:WordSection1;}</style>
<div class="WordSection1">
<p class="MsoNormal"><span style="font-size:11.0pt">Chuck, I
have mine plumbed the way you mentioned, it really helped
with my overheating, then added a new radiator last year and
now I have no problems.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<div>
<p class="MsoNormal"><span
style="font-family:"PPC Handwriting";color:#006600;mso-ligatures:standardcontextual">Have
a Good Day</span><span
style="font-size:11.0pt;font-family:"PPC Handwriting";color:#006600"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"PPC Handwriting";color:#006600;mso-ligatures:standardcontextual">Mike<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-family:"Calibri",sans-serif;color:#006600;mso-ligatures:standardcontextual"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="color:#006600;mso-ligatures:standardcontextual">Michael
T. Moore, CPA<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="color:#006600;mso-ligatures:standardcontextual">3255
West 26<sup>th</sup> Street</span><span
style="font-size:11.0pt;color:#006600;mso-ligatures:standardcontextual"><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="color:#006600;mso-ligatures:standardcontextual">Erie,
PA 16506<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="color:#006600;mso-ligatures:standardcontextual"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="color:#006600;mso-ligatures:standardcontextual">Phone:
814-616-8652 ext 100<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="color:#006600;mso-ligatures:standardcontextual">Fax:
888-865-5279<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="color:#006600;mso-ligatures:standardcontextual">Email:
<a href="mailto:mmoore@mtmcpafirm.com"
moz-do-not-send="true"><span style="color:#0563C1">mmoore@mtmcpafirm.com</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><span
style="color:#006600;mso-ligatures:standardcontextual"><o:p> </o:p></span></p>
<p class="MsoNormal" style="text-autospace:none"><span
style="font-size:9.0pt;font-family:"Times New Roman",serif;color:black;mso-ligatures:standardcontextual">This
electronic mail message contains confidential and legally
privileged information intended only for the use of the
recipient. If the reader of this message is not the
intended recipient, the reader is hereby notified that any
dissemination, distribution, copying or other use of this
message is strictly prohibited and is hereby instructed to
notify the sender immediately by return email and destroy
this copy of this message.<o:p></o:p></span></p>
<p class="MsoNormal"><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#006600;mso-ligatures:standardcontextual"><o:p> </o:p></span></p>
<p class="MsoNormal"><span
style="mso-ligatures:standardcontextual"><o:p> </o:p></span></p>
</div>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
<div>
<div
style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span
style="font-size:11.0pt;font-family:"Calibri",sans-serif"> Fot
<a class="moz-txt-link-rfc2396E" href="mailto:fot-bounces@autox.team.net"><fot-bounces@autox.team.net></a>
<b>On Behalf Of </b>Chuck Gee via Fot<br>
<b>Sent:</b> Tuesday, January 20, 2026 3:27 PM<br>
<b>To:</b> of Triumph Friends <a class="moz-txt-link-rfc2396E" href="mailto:fot@autox.team.net"><fot@autox.team.net></a><br>
<b>Subject:</b> [Fot] Collective wisdom<o:p></o:p></span></p>
</div>
</div>
<p class="MsoNormal"><o:p> </o:p></p>
<div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-size:11.0pt">Hello all,<br>
<br>
In an effort to constantly improve the car, I’ve been
looking at the cooling system on my TR4. It currently
has a header tank mounted to the firewall that functions
as the high spot in the system. This tank feeds the top
of the radiator but doesn’t really circulate during
operation. I’ve been thinking of plumbing the feed off
of the back of the head into the top of the tank so that
it circulates.
<br>
<br>
Normally this rear head feed is plumbed to the back of
the water pump. In an exercise of overthinking, I’m not
sure if there will be sufficient circulation since the
tank is plumbed to the radiator. Does it matter? What
is the collective wisdom?<br>
<br>
Here are some pictures to help illustrate.<br>
<br>
Thanks,<br>
<br>
Chuck<o:p></o:p></span></p>
</div>
</div>
<div>
<p class="MsoNormal"><img border="0" width="480" height="640"
style="width:5.0in;height:6.6666in" id="Picture_x0020_2"
src="cid:part1.uwATvdgU.yCVVUI0F@tonydrews.com" class=""><o:p></o:p></p>
</div>
<div>
<p class="MsoNormal"><img border="0" width="480" height="640"
style="width:5.0in;height:6.6666in" id="Picture_x0020_1"
src="cid:part2.L600P0WM.Fk0syjQ8@tonydrews.com" class=""><o:p></o:p></p>
</div>
<div>
<div>
<p class="MsoNormal"><span style="font-size:11.0pt"><o:p> </o:p></span></p>
</div>
</div>
<div>
<div>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span
style="font-size:11.0pt">_______________________________________________<br>
<a href="mailto:fot@autox.team.net"
moz-do-not-send="true" class="moz-txt-link-freetext">fot@autox.team.net</a><br>
<br>
<a href="http://www.fot-racing.com"
moz-do-not-send="true" class="moz-txt-link-freetext">http://www.fot-racing.com</a><br>
<br>
Donate: <a href="http://www.team.net/donate.html"
moz-do-not-send="true" class="moz-txt-link-freetext">http://www.team.net/donate.html</a><br>
Archive: <a href="http://autox.team.net/archive"
moz-do-not-send="true" class="moz-txt-link-freetext">http://autox.team.net/archive</a>
<a href="http://www.team.net/pipermail/fot"
moz-do-not-send="true" class="moz-txt-link-freetext">http://www.team.net/pipermail/fot</a><br>
Unsubscribe/Manage: <a
href="http://autox.team.net/mailman/options/fot/mmoore@mtmcpafirm.com"
moz-do-not-send="true" class="moz-txt-link-freetext">
http://autox.team.net/mailman/options/fot/mmoore@mtmcpafirm.com</a><br>
<br>
<o:p></o:p></span></p>
</div>
</div>
</div>
<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
<pre wrap="" class="moz-quote-pre">_______________________________________________
<a class="moz-txt-link-abbreviated" href="mailto:fot@autox.team.net">fot@autox.team.net</a>
<a class="moz-txt-link-freetext" href="http://www.fot-racing.com">http://www.fot-racing.com</a>
Donate: <a class="moz-txt-link-freetext" href="http://www.team.net/donate.html">http://www.team.net/donate.html</a>
Archive: <a class="moz-txt-link-freetext" href="http://autox.team.net/archive">http://autox.team.net/archive</a> <a class="moz-txt-link-freetext" href="http://www.team.net/pipermail/fot">http://www.team.net/pipermail/fot</a>
Unsubscribe/Manage: <a class="moz-txt-link-freetext" href="http://autox.team.net/mailman/options/fot/tony@tonydrews.com">http://autox.team.net/mailman/options/fot/tony@tonydrews.com</a>
</pre>
</blockquote>
</body>
</html>