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Old 03-04-2006, 10:02 AM
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copper water lines

I'd like to use 1 1/4" hard copper (type L) to run between the radiator and the motor in the back (about 7 feet total copper pipe). I've heard that there is some reason not use copper. Does anybody know for sure. The car is for street and nostalgia drags.

thanks,

Animal

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Old 03-04-2006, 01:16 PM
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copper water lines

Check out cboy's Journal. He used it and hasn't mentioned anything bad. Before plastic pipes all home hot and cold water piping was copper and it lasted forever. There should be no problems that I can foresee.
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Old 03-04-2006, 05:03 PM
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Someone warned in a thread the other day of the possibility of copper cracking over time, I think due to the vibration inherent in any car. That's the only potential down side I've heard. I don't have nearly enough time or miles on the roadster to make any kind of judgement about it's long term use but in most cases the copper pipe will not be directly connected to the engine or radiator but rather will be insulated from the car's vibration through normal rubber hose connections at each end. There are a couple other guys on the forum who have used it much longer than I have without a problem. Hopefully one or two of them will chime in.
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Old 03-04-2006, 05:18 PM
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copper water lines

So far so good. I have owned a 59 Healey for over 40 years. It has copper in the heater lines to the radiator. I use antifreeze and have had no problems with cracking or leaking but that is only in the heater line.
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Old 03-04-2006, 05:54 PM
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Any plumber will tell you to support copper with copper clamps, copper plated clamps or a dielectric (insulating) clamp.
Like a rubber coating of some kind.
This eliminates electrolysis.

vicrod
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Old 03-04-2006, 05:58 PM
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I wouldn't hesitate to use copper in water lines. Radiator and heater cores are copper and is not usually a problem. The worst that could happen is the coolant will run out. You would have to beat me severely to get me to use it as a fuel line and shoot me to get me to use it for brakes.
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Old 03-04-2006, 06:01 PM
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You have been hit with an urban legend. There is nothing better than copper for auto water service. Use it with confidence and pride.
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Old 03-04-2006, 06:13 PM
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cooper water lines

That settles it. Copper it is (good thing too since I already bought a 10 foot piece @ $4.50/ft). Thanks for the help.
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Old 03-06-2006, 02:10 PM
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copper water lines

OK. The coppper is in.

Next urban legend: Use only a certain type of antifreeze with aluminum heads.

True?
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Old 03-07-2006, 11:29 AM
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copper water lines

False! Modern antifreeze has additives to lubricate and to inhibit corrosion in cooling systems which often contain a range of electrochemically incompatible metals (aluminum, cast iron, copper, lead solder, etc.).
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Old 03-07-2006, 11:50 AM
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Quote:
Originally Posted by 61bone
You would have to beat me severely to get me to use it as a fuel line and shoot me to get me to use it for brakes.
yet there are plenty of shops out there that run new fuel lines with copper tube because its so easy to fit

maybe on older cars with mechanical pumps on the engine it was **ok**, but HOLY SHAT is it dangerous on fuel injected cars

bet for water lines properly mounted, nop problem .... even if it DOES crack, coolant doesnt exactly burst into flames
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Old 03-07-2006, 03:48 PM
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And all the guys in the Southern States are saying...

Anti freeze....what do you need that for..LOL...now water wetter..we all know what thats good for!!


Tazz
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Old 03-17-2006, 02:56 PM
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The only two downsides I can see with copper is cost and making sure dissimiliar metals don't touch. As far as vibration causing cracks, that can happen with any metal if it's not properly braced.
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Old 03-18-2006, 05:39 AM
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copper water lines

Actually, the cost for copper was less than rubber hose. My local parts supplier wanted $12/foot for wire reinforced (not SS wrapped) 1.25" water hose. The copper was $4/foot. I used a large plumbers tubing bender to put the bend I needed. No other metals will touch the copper, which will dissipate the heat better than the hose.
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Old 03-18-2006, 07:11 AM
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Quote:
Originally Posted by Animal
I used a large plumbers tubing bender to put the bend I needed.
Whoa, Animal, you can't just go expanding the envelope (putting bends in hard copper line) without letting the rest of us in on your secret. Is the bend shown in your journal http://hotrodders.com/journal_photos...1418225642.jpg the one you are referring to or did you do some sharper ones? Did you run into any particular difficulties bending hard copper or use any special techniques? If you've done tighter bends could you post some pics.

BTW, those lines look nice. Do you intend to insulate the fuel or trans cooler lines shown just to the right and above the copper? I'm wondering because I have something of the same situation and have not insulated - but am considering it.

Dewey
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