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-   -   Coolant hose failure revisited (http://www.clubcobra.com/forums/shop-talk/119376-coolant-hose-failure-revisited.html)

Rick Parker 02-28-2013 12:11 PM
Coolant hose failure revisited
 
Hot News About Coolant Hose Failure - Hose - Products | Gates Corporation

xb-60 02-28-2013 02:44 PM
Quote:
Originally Posted by Rick Parker (Post 1233072)
Rick - I would be a little skeptical about this one. Galvanic corrosion occurs when there are dissimilar metals and an electrolyte present. The resulting potential difference (voltage difference) between the two metals causes a current flow through the electrolyte (coolant) and a degradation of the anodic metal in the couple. I don't see how the inside of the hose could be affected, as the hose can't act as an anode.
If the hoses were reinforced with a metal mesh, and the hose degraded with age, allowing access of the coolant and therefore allowing a galvanic cell to operate, then maybe.....
Anybody know if some hoses have metallic reinforcing?
Cheers,
Glen

Tom Wells 02-28-2013 05:30 PM
Rick,

Interesting stuff.

Gates first identified this problem in the mid eighties.

Dunno if the EPDM is slightly conductive or not - might be an interesting thing to Google.

Here's a place to start: http://www.ncbi.nlm.nih.gov/pubmed/18676003

And here: http://adsabs.harvard.edu/abs/2010IJMPB..24.2597K

Tom


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