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What is the down side of running a 165 degree thermostat? Is your engine
not running at optimum efficiency? I have been led to believe that an
engine's optimum running temperature is somewhere around 185 - 190 degrees.
On Wed, Jul 21, 2021 at 6:07 PM Alan Seigrist via Healeys <
healeys@autox.team.net> wrote:
> Kees -
>
> Living in hot and tropical climates like I have, I can confirm that using
> cooler thermostats helps a great deal to reduce heat spikes in traffic, as
> there is significantly less heat energy stored in the coolant at 165F vs
> 180F. That combined with a well sorted system will be sufficient to give
> you a few more minutes at idle than if you were running a 180 or 190F
> thermostat on a very hot day.
>
> You are correct it technically will not prevent overheating, but it will
> postpone it long enough until you get driving again.
>
> Best,
>
> Alan
>
> On Wed, Jul 21, 2021 at 5:48 PM Kees Oudesluijs <coudesluijs@upcmail.nl>
> wrote:
>
>> A thermostat with a lower opening temperature does not prevent
>> overheating. It may buy you some time before the engine overheats but if
>> you are long enough in a traffic jam it will overheat eventually. A more
>> powerful fixed fan may alleviate the problem a bit but the only real
>> solution will be a properly installed electric fan.
>>
>> I have done this from the sixties on all my cars that had a fixed fan.
>> However even in those days many of the more powerful cars were already
>> equipped with thermostatically controlled radiator fans.
>>
>> An electric fan does not solve overheating because of other issues like a
>> dirty or blocked radiator, silted up engine, faulty cowling etc.
>>
>>
>> Kees Oudesluijs
>>
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Content-Transfer-Encoding: quoted-printable
<div dir=3D"ltr">What is the down side of running a 165 degree thermostat?=
=C2=A0 Is your engine not running at optimum efficiency?=C2=A0 I have been =
led to believe that an engine's optimum running temperature is somewher=
e around 185 - 190 degrees.<br></div><br><div class=3D"gmail_quote"><div di=
r=3D"ltr" class=3D"gmail_attr">On Wed, Jul 21, 2021 at 6:07 PM Alan Seigris=
t via Healeys <<a href=3D"mailto:healeys@autox.team.net";>healeys@autox.t=
eam.net</a>> 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-lef=
t:1ex"><div dir=3D"ltr">Kees -<div><br></div><div>Living in hot and tropica=
l climates like I have, I can confirm that using cooler thermostats helps a=
great deal=C2=A0to reduce heat spikes in traffic, as there is significantl=
y less heat energy stored in the coolant at 165F vs 180F.=C2=A0 That combin=
ed with a well sorted system will be sufficient to give you a few more minu=
tes at idle than if you were running a 180 or 190F thermostat on a very hot=
day.</div><div><br></div><div>You are correct it technically will not prev=
ent overheating, but it will postpone it long enough until you get driving =
again.</div><div><br></div><div>Best,</div><div><br></div><div>Alan</div></=
div><br><div class=3D"gmail_quote"><div dir=3D"ltr" class=3D"gmail_attr">On=
Wed, Jul 21, 2021 at 5:48 PM Kees Oudesluijs <<a href=3D"mailto:coudesl=
uijs@upcmail.nl" target=3D"_blank">coudesluijs@upcmail.nl</a>> 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
<div><p>A thermostat with a lower opening temperature does not prevent over=
heating. It may buy you some time before the engine overheats but if you ar=
e long enough in a traffic jam it will overheat eventually. A more powerful=
fixed fan may alleviate the problem a bit but the only real solution will =
be a properly installed electric fan.<br></p><p>I have done this from the s=
ixties on all my cars that had a fixed fan. However even in those days many=
of the more powerful cars were already equipped with thermostatically cont=
rolled radiator fans.<br></p><p>An electric fan does not solve overheating =
because of other issues like a dirty or blocked radiator, silted up engine,=
faulty cowling etc.<br></p><p><br></p><p>Kees Oudesluijs<br></p></div>
</blockquote></div>
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</blockquote></div>
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