Galvanic corrosion risk? |
Post Reply |
Author | |
MourningWood
Gold Member Joined: June-13-2014 Location: NorCal Status: Offline Points: 885 |
Post Options
Thanks(0)
Posted: February-09-2018 at 1:27pm |
Getting motor ready for '81.
Using new aluminum heads and intake, other weight-saving measures. Question: Will I have an issue with galvanic corrosion that I need to address? Fresh-water use only. Thx |
|
1994 Ski Nautique "Riot"
1964 Dunphy X-55 "One 'N Dun" 'I measured twice, cut three times, and it's still too short!" |
|
FFImarine
Senior Member Joined: June-21-2016 Location: Medina Status: Offline Points: 142 |
Post Options
Thanks(0)
|
you could use a quality zinc primer and then paint them if your worried about corrosion.
|
|
TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21109 |
Post Options
Thanks(0)
|
No
|
|
shierh
Gold Member Joined: April-29-2015 Location: Florida Status: Offline Points: 605 |
Post Options
Thanks(0)
|
No real risk. If you are keeping it in the water and there are electrical faults with other boats in the marina then you would have potential risk. Most of the risk comes from shore power at the dock. Your safety ground could let in stray current from another boat that has electrical issues. Will eat your stuff up. We had wet boats for 15 years and we use to go through zincs every 90 days at some marinas. Problem solved once we put in a galvanic isolator.
|
|
Luchog
Grand Poobah Joined: April-17-2007 Location: Argentina Status: Offline Points: 2135 |
Post Options
Thanks(0)
|
I'd be more worried for the different heating rates of having different metals on the engine while running an open cooling system.
For the galvanic current, you could use sacrifical anodes. Depending on the marinas and water you run your boat on, it can chew things pretty fast. |
|
Post Reply | |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |