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Telling diff between cast aluminum and pot metal

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Old 11-20-2006, 11:23 AM
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Telling diff between cast aluminum and pot metal
I'm scrapping a bunch of old Johnson outboard boat engines. There are some parts of the cowling and such that I can't tell if they are cast aluminum or pot metal. Is there a quick, easy way to tell which one they are?

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Kevin
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Old 11-20-2006, 12:46 PM
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Old 11-20-2006, 01:19 PM
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Grinder.. Spark test will tell pretty quick..
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