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I just removed my aftercoolers from my 370B’s. After cleaning, testing and reassembling, I’ve repainted both and am ready to reinstall.
For the zincs to be effective, do I need electrical continuity between the aftercoolers and the engine block (and the boat bonding system).” The L-brackets that support them are painted and am wondering if they should be wirebrushed on both sides before installation.
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Vessel Name: Tenacious
Engines: 6BTA 5.9 330's - "Seaboard Style"
Location: Long Island, NY
Country: USA
Non issue — the two cap zincs are there for nothing but protecting the raw water cooled mixed metal aftercooler.
Just for the sake of curiosity you can put one lead of a DVM continuity meter on the bare metal zinc cap and another lead on bare metal of an engine bolt and check for connection. Likely the bolt itself could be providing continuity like my alarm switch with floating ground that is grounded at the heat-ex bolt. No metal to metal bracket connection there due to the heat-ex rubber mounting cradle.
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