Photo Gallery > 21 Year Old Marine Muffler Exhaust
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21 Year Old Marine Muffler 02
Here are the mufflers as arrived at Chilco. Note the higher corrosion areas near the un-treated welds.
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21 Year Old Marine Muffler 03
Close up of raw water ejection ports. Before
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21 Year Old Marine Muffler 05
Close up of inner surface. 21 years old in hot/cold salt water environment! Amazing! Before processing.
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21 Year Old Marine Muffler 06
5" elbow close up, before processing. Note: gold heat discoloration.
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21 Year Old Marine Muffler 07
Raw water connection nipple, before.
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21 Year Old Marine Muffler 01
Raw water connection nipple AFTER processing
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21 Old Marine Muffler 08
Before electropolishing.
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21 Year Old Marine Muffler 09
After corrosion processing and electropolishing. Amazing!
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21 Year Old Marine Muffler 021
Close up of weld after processing.
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21 Year Old Marine Muffler 010
Close up of elbow after finishing.
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21 Year Old Marine Muffler 11
Close up of muffler body.
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21 Year Old Marine Muffler 013
Close up of muffler internals. Note: pitting in micro structure of surface. Pitting corrosion has not fully penetrated through surface. Now good for another 35+ years!
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21 Year Old Marine Muffler 012
Muffler casing close up. After ep'ing.
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21 Old Marine Muffler 015
Elbow and Flange. After
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21 Year Old Marine Muffler 016
Side of elbow with welded pipe nipple. After.
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21 Year Old Marine Muffler 017
Flange surface. After
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21 Year Old Marine Muffler 018
Chromium enriched surface exposed and fully passive. The surface will now resist corrosion better than when these were new.
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21 Year Old Marine Muffler 019
Weld bead on casing and elbow is as passive as the entire piece. All scale and weld discoloration removed.