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You would need a thermostatically controlled electric fan in modern
traffic anyway. The original fan is fairly useless nowadays.
Kees Oudesluijs
Op 12-7-2023 om 00:42 schreef Harold Manifold:
> Bob,
>
> As long as the side baffles are fitted properly the fan will not have
> any issues pulling air through the rad. The fan does little for air
> flow at anything above 15 mph.
>
> Harold
>
> On Tue, Jul 11, 2023 at 2:19â?¯PM Bob Haskell <rchaskell@earthlink.net>
> wrote:
>
> As the cores become denser, I wonder if the stock fan is able to
> pull sufficient air through the radiator.
>
> Bob Haskell
> Austin-Healey 3000 roadster registrar
>
> On 7/11/23 12:40, Harold Manifold wrote:
>> Gary,
>>
>> I had the same options when restoring my Mk1 BT7. I looked into
>> aluminum radiators extensively to see what the benefits might be.
>> Contrary to popular belief it is not better heat transfer
>> properties of the materials. The copper radiator fins on the
>> original Healey radiators have much better thermal
>> conductivity than aluminum. The advantage of the aluminum
>> radiator is the manufacturing process and the formability of
>> modern aluminum. The result is more tube and fin area. I
>> estimated a Wizard radiator has about 25% more fin area than the
>> stock radiator. The greater the fin area the better to expel heat.
>>
>> Having said that, there is a third option which is to replace the
>> original core with a high efficiency core. This retains the stock
>> look of the engine bay and will be close in performance to the
>> aluminum radiator. The high efficiency core option will be more
>> expensive than a Wizard radiator and the difficulty is finding a
>> radiator shop that can access the core can do the work.
>>
>> This website has a good overview: https://usradiator.com/cores
>>
>> Harold
>>
>>
>>
>>
>>
>> On Tue, Jul 11, 2023 at 9:12â?¯AM warthodson--- via Healeys
>> <healeys@autox.team.net> wrote:
>>
>> My 100 radiator is in need of some rehabilitation. It either
>> needs to be boiled out, which would not replace some of the
>> damaged fins, or re-cored. I am leaning toward re-coring but
>> that would be more expensive, which leads to the aluminum
>> option.
>> Besides price what are the pros vs. cons of these options?
>> Does anyone know if re-cored 100 radiator is more efficient
>> than an aluminum radiator?
>> Gary H
>>
>> On Monday, July 10, 2023 at 09:02:21 PM CDT, BJ8Healeys via
>> Healeys <healeys@autox.team.net> wrote:
>>
>>
>> I live in the sunny South (90°F and 90% relative humidity
>> today) and I used to refer to my BJ8â??s heater as the
>> â??auxiliary engine coolerâ??; but I no longer have to use it
>> that way since I had a modern core installed in the radiator
>> and added a 190°sleeved thermostat that I bought from Kees.
>>
>> Steve Byers
>>
>> HBJ8L/36666
>>
>> BJ8 Registry
>>
>> AHCA Delegate at Large
>>
>> Havelock, NCÂ USA
>>
>>
>> _______________________________________________
>> Support Team.Net http://www.team.net/donate.html
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>> Archive: http://www.team.net/pipermail/healeys
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>>
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>> http://autox.team.net/mailman/listinfo/healeys
>>
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>>
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>>
>>
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>
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<p>You would need a thermostatically controlled electric fan in
modern traffic anyway. The original fan is fairly useless
nowadays.<br>
Kees Oudesluijs<br>
</p>
<div class="moz-cite-prefix">Op 12-7-2023 om 00:42 schreef Harold
Manifold:<br>
</div>
<blockquote type="cite"
cite="mid:CAFP1XCAg+kqUyUgbYtSXt3cMo3SfeLZSHFoqYpPweVenpHmNWg@mail.gmail.com">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<div dir="ltr">Bob,
<div><br>
</div>
<div>As long as the side baffles are fitted properly the fan
will not have any issues pulling air through the rad. The fan
does little for air flow at anything above 15 mph.</div>
<div><br>
</div>
<div>Harold</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Jul 11, 2023 at
2:19â?¯PM Bob Haskell <<a
href="mailto:rchaskell@earthlink.net"; moz-do-not-send="true"
class="moz-txt-link-freetext">rchaskell@earthlink.net</a>>
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>
<p>As the cores become denser, I wonder if the stock fan is
able to pull sufficient air through the radiator.<br>
</p>
<pre cols="72">Bob Haskell
Austin-Healey 3000 roadster registrar</pre>
<div>On 7/11/23 12:40, Harold Manifold wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Gary,
<div><br>
</div>
<div>I had the same options when restoring my Mk1 BT7. I
looked into aluminum radiators extensively to see what
the benefits might be. Contrary to popular belief it
is not better heat transfer properties of the
materials. The copper radiator fins on the original
Healey radiators have much better thermal
conductivity than aluminum. The advantage of the
aluminum radiator is the manufacturing process and the
formability of modern aluminum. The result is more
tube and fin area. I estimated a Wizard radiator has
about 25% more fin area than the stock radiator. The
greater the fin area the better to expel heat.</div>
<div><br>
</div>
<div>Having said that, there is a third option which is
to replace the original core with a high efficiency
core. This retains the stock look of the engine bay
and will be close in performance to the aluminum
radiator. The high efficiency core option will be more
expensive than a Wizard radiator and the difficulty is
finding a radiator shop that can access the core can
do the work.</div>
<div><br>
</div>
<div>This website has a good overview:Â <a
href="https://usradiator.com/cores"; target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">https://usradiator.com/cores</a></div>
<div><br>
</div>
<div>Harold</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
</div>
<br>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">On Tue, Jul 11, 2023
at 9:12â?¯AM warthodson--- via Healeys <<a
href="mailto:healeys@autox.team.net"; target="_blank"
moz-do-not-send="true"
class="moz-txt-link-freetext">healeys@autox.team.net</a>>
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>
<div>
<div dir="ltr">My 100 radiator is in need of some
rehabilitation. It either needs to be boiled
out, which would not replace some of the damaged
fins, or re-cored. I am leaning toward re-coring
but that would be more expensive, which leads to
the aluminum option.  </div>
<div dir="ltr">Besides price what are the pros vs.
cons of these options? Does anyone know if
re-cored 100 radiator is more efficient than an
aluminum radiator?</div>
<div dir="ltr">Gary H</div>
<div><br>
</div>
</div>
<div
id="m_1223842865389656808m_-2269323291578053413ydp70f1316yahoo_quoted_9797011705">
<div>
<div> On Monday, July 10, 2023 at 09:02:21 PM
CDT, BJ8Healeys via Healeys <<a
href="mailto:healeys@autox.team.net";
target="_blank" moz-do-not-send="true"
class="moz-txt-link-freetext">healeys@autox.team.net</a>>
wrote: </div>
<div><br>
</div>
<div><br>
</div>
<div>
<div
id="m_1223842865389656808m_-2269323291578053413ydp70f1316yiv6075989256">
<div>
<div>
<p><span style="color:rgb(31,73,125)">I
live in the sunny South (90</span><span
style="color:rgb(31,73,125)">°</span><span
style="color:rgb(31,73,125)"> F and
90% relative humidity today) and I
used to refer to my BJ8â??s heater as
the â??auxiliary engine coolerâ??; but I
no longer have to use it that way
since I had a modern core installed
in the radiator and added a 190</span><span
style="color:rgb(31,73,125)">°</span><span
style="color:rgb(31,73,125)">
sleeved thermostat that I bought
from Kees.</span></p>
<p><span style="color:rgb(31,73,125)">
 </span></p>
<p><span style="color:rgb(31,73,125)">Steve
Byers</span></p>
<p><span
style="color:rgb(31,73,125)">HBJ8L/36666</span></p>
<p><span style="color:rgb(31,73,125)">BJ8
Registry</span></p>
<p><span style="color:rgb(31,73,125)">AHCA
Delegate at Large</span></p>
<p><span style="color:rgb(31,73,125)">Havelock,
NCÂ USA</span></p>
<p><a shape="rect"
name="m_1223842865389656808_m_-2269323291578053413__MailEndCompose"
moz-do-not-send="true"><span
style="color:rgb(31,73,125)">
 </span></a></p>
<div
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<div>
<div
style="border-right:none;border-bottom:none;border-left:none;border-top:1pt
solid rgb(181,196,223);padding:3pt
0in 0in">
<p><br>
</p>
</div>
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</div>
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</div>
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</div>
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