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post #1 of 14 (permalink) Old 10-26-2012, 09:00 AM Thread Starter
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Question Heater Core Flush

I've been using muriatic acid.
question: what's the core made of?
Copper or aluminium?
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post #2 of 14 (permalink) Old 10-26-2012, 09:08 AM
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Its aluminum and plastic. Not sure that acid is a good idea.
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post #3 of 14 (permalink) Old 10-26-2012, 09:10 AM
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I believe the last one I saw was copper.
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post #4 of 14 (permalink) Old 10-26-2012, 09:12 AM
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Quote:
Originally Posted by GTXKen View Post
Its aluminum and plastic. Not sure that acid is a good idea.
The radiator is aluminum but the heater core is not I don't think...

But yes, acid may not be the best option anyway. The heads and intake are aluminum anyway.

How do you plan on running the acid through it?

Last edited by cdmccul; 10-26-2012 at 09:24 AM. Reason: I don't think
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post #5 of 14 (permalink) Old 10-26-2012, 09:17 AM
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I believe the last one I saw was copper.
Really? My mistake, sorry. I could swear that the last one I swapped was aluminum.
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post #6 of 14 (permalink) Old 10-26-2012, 09:25 AM
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Hrrrrmmmm I could be wrong - I didn't go through with the change, I returned the core when I found my leak elsewhere.

Thinking about the heater core tubes sticking out of the fire wall is all I can go on for sure right now. Most of the time there is enough solder flow around the fins that the outer shell of the core will look aluminum.
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post #7 of 14 (permalink) Old 10-26-2012, 09:32 AM
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Core tubes on the one we changed were plastic. Had to change the core because my step son cracked one of the tubes off the firewall. I don't know that they are all plastic but this one was. Sort of the the radiator, plastic tank and tubes and aluminum core.
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post #8 of 14 (permalink) Old 10-26-2012, 09:42 AM
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WOW... Plastic tubes...

The heater core I bought was from NAPA, and it was not plastic tubed or anything plastic... Odd...

Where'd yours come from?
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post #9 of 14 (permalink) Old 10-26-2012, 09:53 AM
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Quote:
Originally Posted by cdmccul View Post
WOW... Plastic tubes...

The heater core I bought was from NAPA, and it was not plastic tubed or anything plastic... Odd...

Where'd yours come from?
Rock Auto. The original dodge piece had plastic tubes as well.
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post #10 of 14 (permalink) Old 10-26-2012, 05:03 PM Thread Starter
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Thanks,
To flush I removed the Heater hoses from the core and replaced it with temporary tubing
on both.
Also, the visible portion of the tubing is copper, I just don't Know if there is any aluminum inside
the core.
Muriatic acid will eat aluminum cans.
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post #11 of 14 (permalink) Old 10-26-2012, 05:15 PM
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Muriatic acid is just a shelf name for hydrochloric acid. Not only does it eat aluminum, but the chemical products are pretty nasty as well. I would know, as a kid I made 2 liter bottle bombs with the stuff all the time.
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post #12 of 14 (permalink) Old 10-26-2012, 05:33 PM
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Depends how long you leave it in there and the concentration. Water soluble. Parietal cells produce hydrochloric acid that helps to break down food.
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post #13 of 14 (permalink) Old 10-29-2012, 04:04 PM
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Quote:
Originally Posted by CaptainMorgan View Post
Muriatic acid is just a shelf name for hydrochloric acid. Not only does it eat aluminum, but the chemical products are pretty nasty as well. I would know, as a kid I made 2 liter bottle bombs with the stuff all the time.
I needs me some fluroantimonic acid. Time to protonate some hydrocarbons!
Kaboom!
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post #14 of 14 (permalink) Old 10-29-2012, 08:30 PM
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I needs me some fluroantimonic acid. Time to protonate some hydrocarbons!
Kaboom!
That is some serious stuff, I just used off the shelf pool chemicals.
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