The problem with running straight antifreeze is that ethline glycol has a
much lower specific heat than water. This means that it takes fewer
calories of heat to warm it a given amount as compared to water. The upshot
is that less heat is transferred to the radiator each time a hypothetical
"chunk" of coolant cycles through the radiator. No problem in cold weather,
big problem in hot weather.
-Tom Allen
51 3800
At 11:06 PM 9/3/99 -0400, Grant Galbraith wrote:
>I don't think a fan shroud will effect freeway driving but should be great
for
>sitting in traffic. I think the most you should go with anti-freeze is
70/30. I
>don't think the heater being disconnected will cause overheating but seem to
>remember a post saying it helps to have it connected during warm-up before
the
>thermostat opens. I don't know if this is true as mine is shut off in this
>weather anyhow.
> I tried a heat transfer enhancer ? called water wetter and it didn't
help
>my situation at all, however I've heard others say it works great. This
makes me
>think my stock radiator is not up to snuff for 95 degree days. Luckily it
cooled
>off here in the North East while I was trying to decide whether to recore or
>replace so I'll wait until next year.
>
>Grant 50 3100
>
>Charles Culver wrote:
>
>> Grant (and other list members)-
>>
>> I caught your note about the high engine temp in hot weather, for extended
>> high speed driving. I have the same situation. Just had my engine ('59
>> model 235) rebuilt, and got the radiator cored, 160 thermostat, 13 lb.
>> pressure cap. Down here in the Houston area, it's been in the 100s pretty
>> much every day during the summer, and that has definitely been a factor
with
>> my engine temperature. On a rare cool day, I don't get anywhere near the
>> thermostat setting, but usually I go well above the 160 mark. It's even
>> worse when I get on the freeway and stay at 55 for a few miles. I
wonder if
>> there's anything I should use other than straight antifreeze. Miq
mentioned
>> a fan shroud. Pardon my ignorance, but I don't know what that is. I may,
>> or may not have one, and will definitely get one if I need it. Another
list
>> member, Gerry, mentioned that he has his heater connections capped off, and
>> does not have the circulation through the heater. Neither do I. So how do
>> I cool things off? Might also mention that the hotter the engine runs, the
>> lower the oil pressure-
>>
>> Smokey
>> '50 3600 5-window
>>
>> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
>
>
>oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
Tom Allen
Seattle, WA
oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
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