Volks-Swap :: The Cooling System :: alternative materials for running coolant lines



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fift7
05:47:53 Tue
Mar 6 2007

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alternative materials for running coolant lines

Most of what i have seen is running 1 1/2 inch copper, however i have heard of running stainless pipe as well, what about running aluminum piping, and as a last and probably cheapest, galvanized steel pipe.

out of the copper, stainless and aluminum all of the same thickness, for example 16 gauge, which would have the best ability to transfer or lose heat along the trip back and forth to the engine?

and if they are all relatively the same in that respect, then do they have any negative aspects? example: quicker breakdown of the materials?

i would think that the copper would be the easiest to work with and possibly transfer the most heat. Yes/No?

however copper is about $7.00 a foot and I will probably need 20+ feet

stainless is about $3.50 a foot

and aluminum is less than $2.00 a foot

any suggestions? thanks

  
DarkWanderer
08:49:03 Wed
Mar 7 2007

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Re: alternative materials for running coolant lines

That's not hard at all.

Copper has the best heat transfer, also is the simpliest to solder

Aluminium is a very good heat transfer metal, though not as good as copper, and if you never made TIG weld, you'll just cry because it takes a lot of practice to make good welds that are strong. (Believe me, i'm a TIG welder) And you'll need an A/C welder with High Frequency box. Otherwise, you'll have to make the angle piping out of rubber with clamp. But Aluminium weight almost nothing compared to copper.

Do not ever take SS. It has terrible heat transfer rating though it's very beautiful when polished! :biggringreen:

Galvan Steel, I dunno but anyway the choice isn't hard at all. ALuminium for less fortunate people and cooper for the BiG Bang!

But IMO, Aluminium is the best because it weight nothin' compared to cooper, cost way less expensive, and well, obviously, check your radiator, it's in aluminium! If aluminium wasn't worth it, they wouldn't make it in alu!

  
fift7
14:31:43 Fri
Mar 9 2007

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Re: alternative materials for running coolant lines

cool i think thats a good answer and probably what i was llooking for, think i'll run 2 long pieces of aluminum, then make my curved pieces with copper and attach them with a 3-4 inch hose..

  
zenjoe
19:01:06 Thu
May 10 2007

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Re: alternative materials for running coolant lines

people use copper because you can solder bends and different pieces of tubing together, and just bout anyone can solder the pipe together in their driveway. Aluminum will have to be welded or bent or connected with lots of pieces of rubber tubing to get everything to fit. for me copper was the easiest so that is what I went with.



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gerrelt
21:04:18 Mon
Jun 4 2007

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Re: alternative materials for running coolant lines

This site sounds really convincing why you shouldn't use copper:

Material Choice

Don't know if it is true, I've never seen real live experiences with copper going bad on a cooling system..

Read it, and make your own choices... :mischief:



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Solow
14:14:52 Tue
Aug 18 2009

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Re: alternative materials for running coolant lines

Well, if i was to put my rad in the front, i would go for the original VW solution.

I would take the radiatorlines that sits under the Vanagon !!, its very durable, strong plastic lines that has the right diameter for the rest of the hoses, and you can usualy take them of a scrapcar for free :smile:

Martin - DK
[1 edits; Last edit by Solow at 14:38:55 Tue Aug 18 2009]

  
Gecko1250
14:58:41 Thu
Sep 3 2009

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Re: alternative materials for running coolant lines

The copper portion of the coolant lines will not fail. If you use copper lines it causes aluminum parts in the engine to corrode at an excelerated rate. This does not mean your engine will be a pile of white dust in a year, but it will cause pitting in the aluminum parts which could result in a mechanical failure in the future.

Why do you think production cars no longer use copper core radiators.

Aluminum has a galvonic voltage of 0.8V and copper is 0.35V. The aluminum ends up acting like a sacrificial anode, similar to zinc plating on steel.

I would use aluminum pipe in combination with flexible lines.



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ukmarc
20:19:01 Wed
Dec 9 2009

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Re: alternative materials for running coolant lines

have you thought of plastic central heating tubing and it comes with quick fittings just push on???

  

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