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Old 05-07-2013, 10:07 PM   #11
Shaolin CraneShaolin Crane is offline
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My massive aluminum radiator cost me around $100. Copper was 4x that
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Old 05-07-2013, 10:15 PM   #12
enkeivetteenkeivette is offline
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My massive aluminum radiator cost me around $100. Copper was 4x that
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Old 05-07-2013, 10:26 PM   #13
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I didn't know that. But brass is an alloy of copper and zinc, so how much better would depend on the alloy composition. From a thermal conductivity POV Copper > Aluminum > Zinc. But heck yes, if a radiator had a substantial portion of total copper it would be able to conduct more heat away from the coolant. But aluminum is very good as far as heat dissipation is concerned. It's also way more plentiful and cheap than copper.
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Old 05-07-2013, 10:34 PM   #14
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I have a VERY large aluminum radiator int he vette runs 180 normal driving. 215 at the track.
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Old 05-07-2013, 11:09 PM   #15
94cobra69ss39694cobra69ss396 is offline
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Glenn, aluminum corrodes. But aluminum also cools faster than copper.

Adam, I do have a thermostat but it's gutted so it really just a restrictor plate.
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Old 05-08-2013, 02:56 AM   #16
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Glenn, aluminum corrodes. But aluminum also cools faster than copper.

Adam, I do have a thermostat but it's gutted so it really just a restrictor plate.
Well, I unless I misunderstand the meaning of thermal conductivity, copper "conducts" far more heat than aluminum does.

http://www.wolframalpha.com/share/cl...gudn978&mail=1

Copper sure as hell corrodes (copper oxide). It's usually regarded as aesthetically pleasing, like a patina. See all those green copper roofs in the old world. That's copper oxide. HOWEVER, brass, is an alloy with zinc, and is more resistant to being destroyed by oxidation, just kind of gets a tarnish. Aluminum almost instantly get's a layer of aluminum rust in the presence of oxygen, but it is very thin, non-destructive, and prevents further oxidation.
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Old 05-08-2013, 06:55 AM   #17
94cobra69ss39694cobra69ss396 is offline
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Copper does absorb heat better than aluminum. The advantage of the aluminum radiator is in the tubes. Copper/brass radiators use smaller tubes like around a 1/2 -3/4 inch where an aluminum radiators uses wider tubes that are 1 to 1 1/2 inches wide which provides a larger cooling area. The radiator in the Chevelle has 1 1/2 tubes and seems to work fairly well even with the cheap electric fan.
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Old 05-08-2013, 10:54 AM   #18
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Quote:
Originally Posted by 94cobra69ss396 View Post
Copper does absorb heat better than aluminum. The advantage of the aluminum radiator is in the tubes. Copper/brass radiators use smaller tubes like around a 1/2 -3/4 inch where an aluminum radiators uses wider tubes that are 1 to 1 1/2 inches wide which provides a larger cooling area. The radiator in the Chevelle has 1 1/2 tubes and seems to work fairly well even with the cheap electric fan.
That is true about the bigger tubes...but it can be a problem under CERTAIN circumstances.
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Old 05-08-2013, 11:34 AM   #19
BRUTAL64BRUTAL64 is offline
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Ok...Class there are two BIG problems with Alum rads...

What are they???

Waiting for an answer


Hint it is NOT that it corrodes

But it is similar.....actually it could be but not from water.

The other problem Kills the Alum Rad in seconds...

So boys and girls what are they?
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Old 05-08-2013, 12:03 PM   #20
enkeivetteenkeivette is offline
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Quote:
Originally Posted by BRUTAL64 View Post
Ok...Class there are two BIG problems with Alum rads...

What are they???

Waiting for an answer


Hint it is NOT that it corrodes

But it is similar.....actually it could be but not from water.

The other problem Kills the Alum Rad in seconds...

So boys and girls what are they?
They are:

Not relevant, because

a) They have proven themselves to last long without issue
and,
b) They have proven themselves to keep high hp mills cool, all day long.

What's wrong with copper brass radiators you ask?

They are:

a) Heavier,
b) More easily damaged and internally warped because they are softer,
c) More expensive,
d) Less aesthetically pleasing,
and,
e) More likely to corrode.

Class dismissed
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