The Rev Posted August 3, 2019 Share Posted August 3, 2019 I p[osted yesterday about Tohatsu motors. As I think about making a purchase (I am leaning towards a Suzuki for a few reasons), i was giving the boat a clean and noticed this. Is this something to be concerned about RE Surface corrosion / pitting? Any thoughts from those with knowledge would be helpful 🙂 Link to comment Share on other sites More sharing options...
recurve Posted August 3, 2019 Share Posted August 3, 2019 Alloy gets a patina when it's raw. Same as a cast iron pan. Stops it from corroding. Biggest problem with aluminium is electrolysis. So always turn your battery off when not using the boat. If it looks bad up close give it a going with a wire brush or water blaster and see what's under. Looks like the boat has not gotten wash downs much. Or cleaned. I have a raw alloy boat and I take everything out and water blast it 2 - 3 times a year. Does wonders. Link to comment Share on other sites More sharing options...
Fab1 Posted August 3, 2019 Share Posted August 3, 2019 That's normal for bare ally. Link to comment Share on other sites More sharing options...
The Rev Posted August 3, 2019 Author Share Posted August 3, 2019 1 hour ago, recurve said: Alloy gets a patina when it's raw. Same as a cast iron pan. Stops it from corroding. Biggest problem with aluminium is electrolysis. So always turn your battery off when not using the boat. If it looks bad up close give it a going with a wire brush or water blaster and see what's under. Looks like the boat has not gotten wash downs much. Or cleaned. I have a raw alloy boat and I take everything out and water blast it 2 - 3 times a year. Does wonders. Thanks for the feedback. I wash down post every trip - but perhaps need to do a bit more. What do you use for water blasting? Link to comment Share on other sites More sharing options...
kingie chaser Posted October 15, 2020 Share Posted October 15, 2020 On 8/3/2019 at 10:23 PM, The Rev said: Thanks for the feedback. I wash down post every trip - but perhaps need to do a bit more. What do you use for water blasting? Maybe try a salt neutralization solution like saltaway or any other to stop this. Works for me. Link to comment Share on other sites More sharing options...
campr Posted October 15, 2020 Share Posted October 15, 2020 The most damaging electrolysis usually occurs under the floor if sinkers, swivels coins etc get dropped. I always lift floor and remove floatation once a year so I can thoroughly clean out. It's amazing how much dirt and bits of line congregates under there but it's a pain to do with a big tinny like mine. Ron Link to comment Share on other sites More sharing options...
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