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post #1 of 5 Old 04-16-2007 Thread Starter
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External Corrosion

I am getting some external corrosion around the water jacket cover and thermostat. I was talking tosomeone at the boat yard about it and he questioned me about changing the zincs. I was not aware of zincs on or in the motor. He showed me one that looked like a plug. Does the A4 have these?
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post #2 of 5 Old 04-19-2007
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not that I know of, although there may be somewhere you could insert one, I'd be a bit leery of that given you'll also have to change them.

We are not primarily on earth to see through one another, but to see one another through

Some people are like slinkies: not really good for anything... but you can't help laughing when you push them down the stairs
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post #3 of 5 Old 04-19-2007 Thread Starter
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The zinc recommended by the salesman at the baotyard, showed a zinc with a plug threaded on the end. He said it would go in the exhaust manifold drain plug. The corrosion I am seeing is almost like electrolisis,kinda greenish/blue. Its not bad, themotor is clean, and has paint. I am thinking I'll just clean it off and repaint????
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post #4 of 5 Old 04-20-2007
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you could always do both, plug in the zinc, wirebrush like a banshee and see what happens, eh?

We are not primarily on earth to see through one another, but to see one another through

Some people are like slinkies: not really good for anything... but you can't help laughing when you push them down the stairs
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post #5 of 5 Old 04-20-2007 Thread Starter
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Iam thinking that will be the best. The zinc can't hurt. Is it possible the motor isnot properly grounded?
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