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Electrical Corrosion

dennydl

Member
Twin 454 XLi (1998)
T


Twin 454 XLi (1998)
The stdb engine is showing more electrical corrosion than the port engine. In fact the U-cooler on the stdb engine is has paint peeling off due to the corrosion. I replaced the pencil zincs in both engines and both showed the same ware. What would cause more corrosion on one engine than the other and what should I look for?

Thanks.
 
"are you talking electrolysis?

"are you talking electrolysis?

That requires dissimilar metals and an electrolyte (conductive liquid). If that's what's going on, I'd suspect a bad or otherwise non-functioning bonding system."
 
"My old boat has NO bonding sy

"My old boat has NO bonding system and it would appear electrically speaking, things are just peachy. AS I UNDERSTAND IT...the ABYC has yet to formulate an opinion on the requirement for bonding. Of course that could be last years information. I fail to subscribe to the ABYC updates and changes"
 
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