Has anyone out there purchased and installed a "Optima core" radiator like this? If so, I'd like to hear your thoughts and results. thanks (click on link)
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Aftermarket radiator question ('58-'60)
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They are careful not to say what metal the lowest line radiators are made from. Then, they go into aluminum, copper, different centers, etc.
I want to see the real numbers. Heat exchangers can be accurately measured regarding BTU/minute ratings. An important factor is, how easily air flows through the cores. Sometimes too many 'obstructions' slows air flow like a brick wall.
Keep in mind, when Squarebirds left the factory they were equipped to tackle the Mojave desert while running A/C. So, 'factory' is usually good enough for stock engines.
If you are serious about cooling your engine, get an oil cooler because oil reaches temps of 300-degrees F.Member, Sons of the American Revolution
CLICK HERE to see my custom hydraulic roller 390 FE build.
"We've got to pause and ask ourselves: How much clean air do we need?"
--Lee Iacocca
From: Royal Oak, MichiganComment
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One way or another, my car is going to run cooler this year.Comment
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tried that already. I could idle all day with the electric fan, but temps would climb running down the interstate at 70mph. My engine also makes twice the HP than before. I went to a 6-blade fan with a proper shroud. I'm ok now unless its a warm day.Comment
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I have an AC car and the problem is low speeds or idle. The needle goes right up to the H, but not beyond. I heard the aftermarket fan shroud helps these situations. I heard this was a late 1960 addition. Is any of this confirmed? I'm aware Chevrolet eliminated oil coolers on the C5 corvette by mandating synthetic Mobil 1.Comment
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JohnAttached FilesLast edited by jopizz; January 7, 2017, 01:05 PM.John Pizzi - Squarebirds Administrator
Thunderbird Registry #36223
jopizz@squarebirds.org 856-779-9695
https://www.squarebirds.org/picture_gallery/TechnicalResourceLibrary/trl.htmComment
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My fan doesn't even turn on when I'm on the highway.Comment
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then perhaps my original radiator is not as clean inside as I am assuming.Comment
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John, so I don't find the shroud anywhere in my manual, but it seemed to be there as depicted in your diagram.
The next question is does it make a significant difference in cooling? It would certainly make things more crowded in an AC car like mine.
BTW, I know you were asking about non-modified 1960 AC cars. The only change in mine was the switch to R134.Last edited by Deanj; January 15, 2017, 11:22 AM.Comment
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Dean:
Just by logic, the fan shroud should improve airflow through the radiator. There is also a lot of info out there of proper fan position with a shroud. Rougly they want about 60% of the fan blade inside the shroud and 40% outside. I had to buy a thinner fan spacer to get this position. I'll include a picture of the aftermarket shroud on a stock AC 1960 with a 352.
NylesAttached FilesComment
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That's not a good idea because:- You will forget,
- Someone else driving your car won't know, won't pay attention to your gauges or won't remember.
- You don't want to wait until the engine overheats.
- The cooling system should always have a reserve of some capacity.
If you put anything in the path of air flow it is a restriction. Even so, an electric fan should be thermostatically controlled OR it should automatically come on with the A/C compressor.
The thermostat should monitor RADIATOR temp, at least half way down in case you lose some coolant. And yes, sometimes I go many Michigan winter months where my electric fan never turns on.
There is such a thing as 'too much cooling' like in trucks, where they cover part of their radiator to conserve heat. Too bad we don't have that problem.Member, Sons of the American Revolution
CLICK HERE to see my custom hydraulic roller 390 FE build.
"We've got to pause and ask ourselves: How much clean air do we need?"
--Lee Iacocca
From: Royal Oak, MichiganComment
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After years of no fan at all I regularly check the temp gauge anyway - so knowing when to turn the fan on is second nature. (Not that I need it that much anyway - little traffic build-up, mostly open roads and NZ isn't exactly the Mojave Desert!)
"Your results may vary"A Thunderbirder from the Land of the Long White Cloud.Comment
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