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Bob,If Dynolite does not work, I would try 20W50 motor oil. I have read tha=
t it is an excellent heat transfer agent & should also be good for the wate=
r pump bearings. Also, any leaks in the head gasket might go undetected!
Your welcome,Gary Hodson
-----Original Message-----
From: Bob Spidell <bspidell@comcast.net>
To: healeys@autox.team.net
Sent: Thu, Feb 24, 2022 10:44 am
Subject: Re: [Healeys] Head Gasket
Which, of course, is the theory of the various 'water wetter' products. I =
tried (the original, I think) Water Wetter from Redline and didn't notice a=
significant reduction in coolant temp; but, I've got a bottle of the Dynol=
ite version on the shelf I'll throw in the next time I change out coolant. =
As they say: "Hope springs eternal."
=20
=20
On 2/24/2022 8:30 AM, Michael Salter wrote:
=20
=20
Interesting article Bob but IMHO their statement:=C2=A0 "Pressure in a coo=
ling system is vital for keeping water in contact with the metal surfaces o=
f the cylinder heads and block."
is something of an over simplification.=C2=A0
The reality is that any "boiling " of the coolant produces a "bubble" of =
gaseous coolant, there is no air, as such, involved.=C2=A0 Their statement =
: "Pressure keeps the air compressed and maintains the water-to-metal conta=
ct. "
suggests that the cooling system contains air; it shouldn't contain any a=
ir, other perhaps the very small quantity disolved in the coolant. Pressuri=
zing the cooling system raises the boiling point. Raising the boiling point=
means that the temperature of the engine surfaces where gaseous coolant wi=
ll be generated will also=C2=A0 need to be higher for boiling to occur. As =
the rate of heat radiation from the cooling surfaces is proportional to the=
4th power of the absolute temperature there is also a considerable increas=
e in the amount of energy that can be dissipated by the radiator.=C2=A0 The=
se things together make pressuring the cooling system even to only 7 p.s.i.=
very advantageous.=C2=A0 As I mentioned earlier the problem with the 100 i=
nsofar as cooling system pressure is concerned is the carbon seal in the wa=
ter pump and perhaps the design of the radiator tanks.=20
M=20
=20
=20
=20
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<div style="color:black;font: 12pt Comic Sans MS, sans-serif;">Bob,
<div>If Dynolite does not work, I would try 20W50 motor oil. I have read that
it is an excellent heat transfer agent & should also be good for the water
pump bearings. Also, any leaks in the head gasket might go undetected!<br>
Your welcome,</div>
<div>Gary Hodson<br>
<br>
<div style="font-family:arial,helvetica;font-size:10pt;color:black"><font
size="2">-----Original Message-----<br>
From: Bob Spidell <bspidell@comcast.net><br>
To: healeys@autox.team.net<br>
Sent: Thu, Feb 24, 2022 10:44 am<br>
Subject: Re: [Healeys] Head Gasket<br>
<br>
<div id="yiv5729995204">
<div>
Which, of course, is the theory of the various 'water wetter'
products. I tried (the original, I think) Water Wetter from Redline
and didn't notice a significant reduction in coolant temp; but, I've
got a bottle of the Dynolite version on the shelf I'll throw in the
next time I change out coolant. As they say: "Hope springs eternal."<br
clear="none">
<br clear="none">
<br clear="none">
<div id="yiv5729995204yqtfd50164" class="yiv5729995204yqt5173261800">
<div class="yiv5729995204moz-cite-prefix">On 2/24/2022 8:30 AM, Michael Salter
wrote:<br clear="none">
</div>
<blockquote type="cite">
</blockquote></div>
</div>
<div id="yiv5729995204yqtfd81372" class="yiv5729995204yqt5173261800">
<div>
<div>
<div>Interesting article Bob but IMHO their
statement:
<div><span style="font-size:12.8px;">"Pressure in a
cooling system is vital for keeping water in contact with
t</span><span style="font-size:12.8px;">he metal surfaces
of the cylinder heads and block."</span><br clear="none">
</div>
<div>is something of an over simplification. <span
style="font-size:12.8px;"><br clear="none">
</span></div>
<div>The reality is that any "boiling " of the
coolant produces a "bubble" of gaseous coolant, there is no
air, as such, involved. </div>
<div>Their statement :</div>
<div>"Pressure keeps the air compressed and
maintains the water-to-metal contact. "<br clear="none">
</div>
<div>suggests that the cooling system contains air;
it shouldn't contain any air, other perhaps the very small
quantity disolved in the coolant.</div>
<div>Pressurizing the cooling system raises the
boiling point. Raising the boiling point means that the
temperature of the engine surfaces where gaseous coolant
will be generated will also need to be higher for boiling
to occur.</div>
<div>As the rate of heat radiation from the cooling
surfaces is proportional to the 4th power of the absolute
temperature there is also a considerable increase in the
amount of energy that can be dissipated by the radiator. </div>
<div>These things together make pressuring the
cooling system even to only 7 p.s.i. very advantageous. </div>
<div>As I mentioned earlier the problem with the
100 insofar as cooling system pressure is concerned is the
carbon seal in the water pump and perhaps the design of the
radiator tanks.</div>
<div><br clear="none">
</div>
<div>M</div>
<div><br clear="none">
</div>
<div><span style="font-size:12.8px;"><br clear="none">
</span></div>
</div>
<br clear="none">
<div class="yiv5729995204gmail_quote">
<div dir="ltr" class="yiv5729995204gmail_attr"><br>
</div>
</div>
</div>
</div>
</div>
</div>
</font></div>
</div>
</div>
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