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What radiator to get

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Old Jun 3, 2011 | 10:13 AM
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Default What radiator to get

Is Aluminum worth the $$$$

I saw one OE for about 150.00 and most places they want 499 to 899. for aluminum and brass.

I dont know what the original is 3 or 4 core but it is 2.5 inches wide at the top.

I just got it ome from the shop after putting new rear wheel bearings in to find a nice puddle of green under the front.

Drove to Grand Haven Mon in the 90 degree heat and was stuck in traffic for about 2 hrs but it didnt overheat, got to about 220 though.
oil about 260.
Might have been too much to bear.
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Old Jun 3, 2011 | 03:20 PM
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If everything is in great condition, fans, clutch, radiator, tuning, timing, mixture, seals etc, the stock cooling system will work fine. However, the technology of 81 was not anywhere near the technology of a proper 2 row aluminum radiator and electric fans for cooling. Search the threads, go to www. dewitts.com site and do the research. A new copper brass radiator , and the goodies will easily run you $500-600. Compare.
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Old Jun 3, 2011 | 03:47 PM
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Is your coolant leak from the radiator? Has the car been overheating? 220 in June in traffic is not running hot. Are your support and shroud seals in good shape? Still have the correct shroud and the auxillary fan?

Have your original radiator cleaned and recored. Much cheaper than an actual replacement.

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Old Jun 4, 2011 | 01:20 PM
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Originally Posted by Easy Mike
Is your coolant leak from the radiator? Has the car been overheating? 220 in June in traffic is not running hot. Are your support and shroud seals in good shape? Still have the correct shroud and the auxillary fan?

Have your original radiator cleaned and recored. Much cheaper than an actual replacement.

everything is original. I had my 79 re cored and it ran close to overheating all the time in summer especially hwy driving.

I just got it out the bottom hose was a PITA!
looks like it is 2.5 in wide 31H. Im not sure how you tell the amount of cores.
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Old Jun 4, 2011 | 01:24 PM
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Originally Posted by bigvette1
If everything is in great condition, fans, clutch, radiator, tuning, timing, mixture, seals etc, the stock cooling system will work fine. However, the technology of 81 was not anywhere near the technology of a proper 2 row aluminum radiator and electric fans for cooling. Search the threads, go to www. dewitts.com site and do the research. A new copper brass radiator , and the goodies will easily run you $500-600. Compare.
yeah I looked there, expensive. I saw one in Ecklers or mid america for around 150 so I dont know why they would be so much cheaper however they had some for 899 too so thats why Im confused.

The coolant was shooting out of the middle of the radiator.

When you get it re cored is it basically like new?
I dont want to bother if it is still going to be weak in spots.
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Old Jun 4, 2011 | 03:32 PM
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I went to the best shop in the Dallas area and they quoted $325.00 for an offshore new that would require an adjustment to the lower hose connection, $300.00 for recore of my original tanks. This is for the same amount of cooling as stock. Since I live in TX and run the A/C, I went with the Dewitts direct fit. A couple of hundred more but 25% more cooling capacity. mike...
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Old Jun 4, 2011 | 04:39 PM
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just ordered aN ALUMINUM 3 core from Autopartswarehouse.com for 243.00 shipped!
prety good price I think. hopefully its easier to put in that take out.
probably less messy. the old one looked pretty bad, rust on the bottom so I decided to fore go the re core. I also kind of bent up the bottom gooseneck getting off the hose.
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Old Jun 4, 2011 | 04:47 PM
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When I built my motor, I had the copper and brass radiator redone but this time using what is called a "high-efficiency core". This has a much higher fin count per inch as well as larger tubes inside the core. Combined with a pair of SPAL electric fans, this keeps my 383 at 195* max with the air conditioner on.

It is been 25,000 miles now, and I see no need spend anymore money on the cooling system as it works perfectly well.
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Old Jun 4, 2011 | 05:32 PM
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DeWitts makes great stuff.

I installed a BeCool aluminum radiator with Spal fans about 10 years ago in mine. 180 thermostat and it never runs over 180/185 unless in traffic. Then the fans come on at 195, it cools off, and fans shut off. I have driven cross country twice with 100 degree temps in summer and never had an issue.

Thinking about a BBC swap, so I will say, yes it is worth it.
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Old Jun 4, 2011 | 05:41 PM
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two words......De Witt

I put one in my 79 two summers ago and it completely solved my overheat problems. No sweat with the installation. Aluminum painted black to look stock.

Can't go wrong
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Old Jun 4, 2011 | 08:29 PM
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When I built my motor, I had the copper and brass radiator redone but this time using what is called a "high-efficiency core"
Where did you have this done and how much did it cost you?
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Old Jun 4, 2011 | 11:41 PM
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I bought the $115 all aluminum radiator off eBay. No complaints. Works great in Arizona heat and no leaks. This one is very good quality with good welds, and stock-style drain petcock.
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Old Jun 5, 2011 | 02:35 AM
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Originally Posted by Imo Apita
Where did you have this done and how much did it cost you?
250.00 IF I REMEMBER... any good rad shop does this
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Old Jun 5, 2011 | 10:45 AM
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Originally Posted by 81$$pit
...The coolant was shooting out of the middle of the radiator...
The radiator has a leak.

...When you get it re cored is it basically like new?...
Yes, and usually guaranteed by the radiator shop. It is possible they could clean and repair your existing radiator without requiring a complete replacement.

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