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02-27-2008, 11:24 AM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Not Ranked
$hit! I don't think my aluminum radiator is grounded. You mean the anticorrosive additives in fresh antifreez will not stop the radiator from being ruined ????? 
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__________________
LIFE IS TOO SHORT TO WORRY ABOUT GOOD GAS MILEAGE
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Utinam logica falsa tuam philosophiam totam suffodiant!
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02-27-2008, 11:35 AM
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Senior Club Cobra Member
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Join Date: Feb 2004
Cobra Make, Engine:
Posts: 1,226
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Not Ranked
Quote:
Originally Posted by CobraEd
$hit! I don't think my aluminum radiator is grounded. You mean the anticorrosive additives in fresh antifreez will not stop the radiator from being ruined ?????
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Google "radiator electrolysis". There are links that will answer all your questions and scare the crap out of you. |
02-27-2008, 01:54 PM
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CC Member
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Join Date: Mar 2001
Location: Provo,
Ut
Cobra Make, Engine: Kirkham, 427
Posts: 6,990
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Not Ranked
Just so you know...
There are myriad ways things can corrode.
Galvanic (or electrolysis) is particularly difficult to control--especially with magnesium parts.
David
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02-27-2008, 01:56 PM
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CC Member
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Join Date: May 2000
Location: Northern VA,
VA
Cobra Make, Engine: Classic Roadsters
Posts: 2,765
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Not Ranked
I have a decent dvm. i WILL CHECK THE COOLANT TO SEE IF THERE IS ANY VOLTAGE.
__________________
LIFE IS TOO SHORT TO WORRY ABOUT GOOD GAS MILEAGE
________
Utinam logica falsa tuam philosophiam totam suffodiant!
________
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02-28-2008, 06:33 AM
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CC Member
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Join Date: Sep 2002
Location: Hickory,
NC
Cobra Make, Engine: ERA 427SC w/427so, ERA GT #2002
Posts: 1,106
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Not Ranked
Quote:
Originally Posted by David Kirkham
Just so you know...
There are myriad ways things can corrode.
Galvanic (or electrolysis) is particularly difficult to control--especially with magnesium parts.
David
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Good point. I place chunks of magnesium in the top tank of my Mustang radiator as the "sacrificial lamb." It worked so well as an anode that the engine water-jacket, radiator and water pump looked better than new when I inspected them about two years later after pulling the heads off to do some work.
__________________
Tom
"If you can make black marks on a straight from the time you turn out of a corner until the braking point of the next turn, then you have enough HORSEPOWER." Mark Donohue
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02-28-2008, 06:45 AM
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CC Member
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Join Date: Mar 2001
Location: Provo,
Ut
Cobra Make, Engine: Kirkham, 427
Posts: 6,990
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Not Ranked
I think mag is on the bottom of the potential list and so I don't think it is possible to protect it. I never thought of using it as a "sacrificial lamb" though...good thinking. Anyone else have any experience with this?
David
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02-28-2008, 06:32 PM
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CC Member
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Join Date: Feb 2008
Location: Jacksonville,
FL
Cobra Make, Engine: Kirkham #570 w Shelby FE
Posts: 1,009
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Not Ranked
I know from my boat owning days that these are called "noble" metals.
Since one of my larger customers is a local utility, I'll see if I can get some input from their engineers in the water dept. They have to deal with all sorts of problems like hydrogen sulfide gas in our ground water here. (rotten egg smell) Not to mention clorine and calcium. Ph levels are a big concern for one thing.
Last edited by Ronbo; 02-28-2008 at 06:37 PM..
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02-29-2008, 07:58 AM
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CC Member
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Join Date: Feb 2006
Cobra Make, Engine: Hurricane HM1073 Keith Craft Genesis 427FE/482 CI
Posts: 390
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Not Ranked
Flex-a-lite product number 32060 is only $8.95 at Summit.
Best $9.00 insurance I ever bought.
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02-29-2008, 08:32 AM
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CC Member
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Join Date: Sep 2006
Location: Tampa,
fl
Cobra Make, Engine: Kirkham #473 427 every option, Keithcraft aluminum FE 482 ci. Mass Flo FI. Tremec TKO 600.
Posts: 260
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Not Ranked
Nobel and Base metals
Quote:
Originally Posted by Ronbo
I know from my boat owning days that these are called "noble" metals.
Since one of my larger customers is a local utility, I'll see if I can get some input from their engineers in the water dept. They have to deal with all sorts of problems like hydrogen sulfide gas in our ground water here. (rotten egg smell) Not to mention clorine and calcium. Ph levels are a big concern for one thing.
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Noble metals are less active to corrosion (Gold being at the high end of the Nobel scale) Base metals are "active" in corrosion (aluminium, lead, zinc), Key is to sacrifice metal via the electron flow through a less nobel metal than you are trying to protect. Problem is that zinc although less nobel than aluminium, it's not alot less. |
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