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20 year old rad cut open #4893296 10/10/18 06:47 PM
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WobblyElvis Offline OP
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Had to change the rad in my 99 Caravan. It started to leak where the tube of the core meet the end plate. The fluid was changed every 5 years or longer. My experience has been that ever since they got away from the old copper/brass radiators, they just don't seem to corrode. I cut it open to see what it looked like inside. Most of the time, the fluid used was a cheap old green style glycol mix. As of late I couldn't find that fluid so I used a universal type. Clean as a whistle.

SDC10016a.JPGSDC10018a.JPGSDC10020a.JPG
Re: 20 year old rad cut open [Re: WobblyElvis] #4893325 10/10/18 07:33 PM
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Driz Offline
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I’d say whatever you had in there really did it’s job well.

Re: 20 year old rad cut open [Re: WobblyElvis] #4893458 10/10/18 10:28 PM
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StevieC Offline
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I changed many of these over the years with my dad but never thought to cut one open. Thanks for posting. thumbsup


'18 Caravan - 42k KM - AMSOIL SS 0w20, Fram Ultra, TC-W3 500:1
'06 Santa Fe - 535k KM (Retired)

There is no such thing as "lifetime" fluids! mad
Re: 20 year old rad cut open [Re: WobblyElvis] #4893512 10/11/18 12:39 AM
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Ducked Offline
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DP

Last edited by Ducked; 10/11/18 12:43 AM. Reason: DP
Re: 20 year old rad cut open [Re: WobblyElvis] #4893514 10/11/18 12:42 AM
Joined: Oct 2012
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Ducked Offline
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Originally Posted by WobblyElvis
It started to leak where the tube of the core meet the end plate........... Clean as a whistle.


Given that "It started to leak where the tube of the core meet the end plate" why does it matter that it is "Clean as a whistle."?

I suppose it indicates it was probably thermally efficient until failure, but maybe a dirtier one would have lasted longer.

Re: 20 year old rad cut open [Re: Ducked] #4893530 10/11/18 01:40 AM
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Oro_O Offline
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Originally Posted by Ducked
Originally Posted by WobblyElvis
It started to leak where the tube of the core meet the end plate........... Clean as a whistle.


Given that "It started to leak where the tube of the core meet the end plate" why does it matter that it is "Clean as a whistle."?

I suppose it indicates it was probably thermally efficient until failure, but maybe a dirtier one would have lasted longer.


I also am failing to see the upside here. Clearly not up to the task with the coolant and change interval.

Re: 20 year old rad cut open [Re: WobblyElvis] #4893611 10/11/18 06:32 AM
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joekingcorvette Offline
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Really nice and clean good job!


2005 Chevrolet Corvette
2014 Ford F-150 4x4 supercrew
2014 Jeep Grand Cherokee Limited (wifes)
2012 Honda Civic 4 door (my daily driver)
2007 Lund Tyee Grand Sport Mercury 115HP 9.8HP
Re: 20 year old rad cut open [Re: WobblyElvis] #4893710 10/11/18 09:09 AM
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circuitsmith Offline
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Upside is it worked well for 20 years.
And that's using old school green which is rated for 2-3 years, for 5+ years.
Back in the '80s a friends Corolla cooling system was ruined in 7 years because he used a mechanic that didn't actually do the work he was paid for.
This mechanic also "faked" a timing belt replacement on this car.
The old belt got loose (no self-adjusting tensioner) and jumped a couple teeth.
Luckily a non-interference engine (1.6L twin cam).


2017 Hyundai Tucson SE FWD
SuperTech synth, 5w-30, 5000mi/12mo OCI
Re: 20 year old rad cut open [Re: WobblyElvis] #4893762 10/11/18 10:05 AM
Joined: Jan 2005
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Oldmoparguy1 Offline
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We had a similar failure in our 2006 T&C @ 230+k miles. It had G-05 in it since new. Our 2000 Dodge GC rad was replaced at 34k because of external damage. Now has 180k on it, G-05 of course.


A Randomly Selected Thought For The Day:
If Noah had used Zip, he could have used a smaller boat.
Re: 20 year old rad cut open [Re: WobblyElvis] #4893774 10/11/18 10:20 AM
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FordCapriDriver Offline
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Aluminium makes far better radiators than copper or brass for sure.
My Escort has a aluminium cooling radiator and a copper / brass heater core, after much research i'm running VW G12++ Si-OAT ( Glysantin G40 )


1975 Ford Capri II Ghia 3000 V6 - Repsol Elite Super 20W-50
1988 Ford Escort XR3i Cabrio - Shell Rimula R4X 15W-40 HDEO

Re: 20 year old rad cut open [Re: WobblyElvis] #4893841 10/11/18 11:30 AM
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anndel Offline
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Nice and clean!

Last edited by anndel; 10/11/18 11:30 AM.

1993 Toyota 4x4 p/u, 2.4L 22RE 4 cyl - M1 EP 10W-30, Fram UG Filter
2005 Toyota Avalon XL, 3.5L V6, Amsoil XL 5W-30, Amsoil Filter
2014 Toyota Tacoma 4.0L V6, Amsoil SS 5W-30, Yota OEM Filter
Re: 20 year old rad cut open [Re: FordCapriDriver] #4893964 10/11/18 01:41 PM
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ofelas Offline
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Copper-brass is more efficient for the same thickness, about double the thermal conductivity of aluminum.

Aluminum is acceptable, if the core thickness is increased and/or the the tubes are made larger. With cores, it's a compromise between thickness & airflow.

I have all my hot rod rads recored with domestic copper cores, and along with brass tanks, this combo is hard to beat.

The reason for aluminum radiators these days is cost, and not much more.

On the rare occasion I order a custom aluminum radiator, it's for fitment on a tubular frame or added capacity on a tow vehicle, and they always have the cores TIG'd to aluminum tanks, rather than attached to the lowest possible bidder OEM mass market style plastic tanks.

Originally Posted by FordCapriDriver
Aluminium makes far better radiators than copper or brass for sure.
My Escort has a aluminium cooling radiator and a copper / brass heater core, after much research i'm running VW G12++ Si-OAT ( Glysantin G40 )


R12 in the summer, Webasto in the winter, and cassette tapes all year.
Re: 20 year old rad cut open [Re: WobblyElvis] #4894209 10/11/18 07:38 PM
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DONWATERS Offline
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I have cut the ends off many of these alum and plastic radiators for scrap.

I prefer copper and brass because they can be fixed easily. And they don't blow apart. The plastic end tanks can blow out, leaving huge chunks missing and there is no way to fix it. You can always keep going on a copper brass one but if the plastic end tank blows a chunk off you can't drive anywhere.

My 69 Camaro still has its original Harrison radiator with its tag that indicates the engine. 396. Yes it has been repaired several times.

Re: 20 year old rad cut open [Re: DONWATERS] #4894705 10/12/18 01:07 PM
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WobblyElvis Offline OP
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More pics. Coolants or Rads must be far better than they used to be..

SDC10028.JPGSDC10030.JPG
Re: 20 year old rad cut open [Re: ofelas] #4895589 10/13/18 04:33 PM
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George Bynum Offline
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Originally Posted by ofelas
Copper-brass is more efficient for the same thickness, about double the thermal conductivity of aluminum.


If by double you mean twice as bad, you're correct ... although brass has copper in it, brass isn't a very good conductor of heat.

Can brass be made thinner because it is stronger ... yes, if half the thickness of aluminum, you'd be equal. I seriously doubt, but do not know, if it is enough stronger to do that. There needs to be more factual data.

Brass CAN be soldered with common materials and techniques; aluminum cannot be.

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