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Old 04-06-2018, 10:02 PM   #15
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Ragtop ... Other than WHO / WHERE made, I have a slight preference for a PTR... But, if youíre gonna oversized the radiator your only choice might be an all aluminum radiator to accommodate the thicker core.... As a side note Iím in favor or a 65-70% antifreeze solution in the cooling system.... And to those of you using a 50/50 antifreeze mix after draining your old coolant: have you ever calculated how much of that dirty used old ďstuffĒ is left in the engine block, heater, hoses, dirty recovery system after youíve drained it???If you have drain plugs on your engine ( I do ) it might be wise to use them when doing a flush & fill..Also if vehicle has been modded I recommend checking for electrolysis in the cooling system....
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Old 04-07-2018, 04:51 PM   #16
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4 what it's worth, I have a STEEL & COPPER Bolt Together Radiator w/ updated rubber mounting and using Cat ELC coolant with no problems. Replace 6 years ago plus close to 75% of the Country Coaches have had there radiators replace because of bad aluminum radiators.
Mine came from https://radiatorsupplyhouse.com/products/motorhomes-rv/
installed by Quinn Cat in California.
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X2 for RSH. they build a copper core with steel end tanks bolted together and looks like it's bullet proof! Mine has been in for a year and about 6K miles with no problems. They also custom built me a CAC to replace my old leaky one. I did the install along with all new hoses, OAT coolant belts, thermostat AND a more efficient, quieter fan from Source Engineering. TB
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Old 04-08-2018, 09:15 AM   #17
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Sorry, but I am in the camp of copper and brass. I can fix it anywhere with a torch, flux, and some solder. Yes those are all things I carry in my coach. Even if I didn't carry them with me they could all be bought at any hardware store for less than $100 any day of the week. As for the aluminum with plastic tanks they became the standard because weight, and cost. they are disposable junk IMHO. Copper/brass has been tried tested and proven for a long time.
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Old 04-08-2018, 10:23 AM   #18
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FWIW... Remember when batteries were ONLY 6 volt flooded; then it got better - 12 volt flooded...Then it got better with no maintenance batteries.... Now we have lithium & etc choices, even better yet...Times change.... And so do radiators... Iím not saying copper / brass is bad, Iím only saying times change & so do radiators... When the PTRís first came out EVERYONE in the repair industry started laughing & also oiled the cash register... Those that laughed wound up wasting the oil & closed their doors ... That is history... How many laughed at electric cars? ...Ē How long is the extension cord on that electric car?
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Old 04-09-2018, 01:39 PM   #19
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My $.02 worth...started with a brass/copper/solder radiator, developed a leak/blockage in one of the cross tubes. Radiator came out, and bottom (which was already split but held together by the Spartan side frame) spewed all over.

Repair: $670.

Replace with All aluminum: $900.

Easy choice, really...
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Old 04-10-2018, 10:29 PM   #20
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The manufacturers went to plastic tanks and aluminum cores because it was lighter and every ounce counts when you're trying to meet government fuel mileage standards.
Doesn't mean it's better.
And the radiator repair shops disappeared because the new radiators were disposable and not worth repairing.
I am not in the radiator business but I deal with 1000 gallon tanks under vacuum and pressure. We have a lot more corrosion problems with the aluminum tanks than we do with carbon steel tanks.
Furthermore, aluminum expands and contracts more with temperature change than steel, brass or copper.
This!

All aluminum is one thing. I would not necessarily have a problem with that, but radiators with plastic tanks are an inferior product if we are using the test of time as a measurement. They simply do not hold up as well. Everything is becoming "throw away" these days and this is the "throw away" version of the radiator.
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Old 05-14-2018, 04:11 PM   #21
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This!

All aluminum is one thing. I would not necessarily have a problem with that, but radiators with plastic tanks are an inferior product if we are using the test of time as a measurement. They simply do not hold up as well. Everything is becoming "throw away" these days and this is the "throw away" version of the radiator.
That's why I am getting a metal coolant tank. Have heard others say how the sun is eating theirs up, and cracking. Mine isn't leaking yet. But it does have those cracks.
My new one is supposed to be here Wed. 16th this month.
Can't wait to see what it is made of. (Not Plastic)
Lee
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Old 05-14-2018, 05:03 PM   #22
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The manufacturers went to plastic tanks and aluminum cores because it was lighter and every ounce counts when you're trying to meet government fuel mileage standards.
Doesn't mean it's better.
And the radiator repair shops disappeared because the new radiators were disposable and not worth repairing.
I am not in the radiator business but I deal with 1000 gallon tanks under vacuum and pressure. We have a lot more corrosion problems with the aluminum tanks than we do with carbon steel tanks.
Furthermore, aluminum expands and contracts more with temperature change than steel, brass or copper.
Nah. They went to the plastic tank because it is CHEAPER. Nothing more, nothing less. Seen the same thing thing in automobiles. There was a time when you could find radiator shops that could actually clean out and repair radiators. Not so many nowadays thanks to the clamped plastic tanks that are not soldered in and depend on a crimped lip to hold them tight.

cheap.. Plastic has its places, but NOT in radiators, intake manifolds and such...
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Old 05-15-2018, 04:21 PM   #23
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when i replaced mine on my London aire the shop i brought it to was a bus shop..which i always take to along with lhalf the town.. they said i could put a new one as there part number or look for generic...they found one that was right sq inches and mounting good and hose in and out would work ...it cost $900 vs $2850 for other
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Old 05-15-2018, 07:38 PM   #24
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FWIW, PTRís ( with aluminum cores ) are not ď cheaperĒ or inferior ... Yes they are less expensive to make...Radiator repair facilities declined in huge numbers as a result of these PTRís lasting LONGER than traditional copper / brass radiators ( which came as a huge surprise to ALL in the radiator industry! ) Aluminum PTRís also do not plug up internally like copper / brass radiators do and by design actually do a better job of cooling than traditional metal radiators...Yes, they fail as does everything eventually, but, the reason they are still here is durability!! Whoever says they are not repairable has never been in a real radiator repair facility, but again with labor & overhead costs it is usually LESS EXPENSIVE to simply replace rather then repair...I remember when batteries, starters, generators, motors, refrigerators, washing machines, etc were repaired... It is now the era of ď REPLACEMENTĒ... Ask NARSA.org if you donít believe the above...
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