Any tips to Maintaining Aluminum heads? where i boat is brackish/fresh. I have been a little lax on flushing lately, but i also wonder if flushing even matters, if its not just the water and 2 different metals that rots them out, or if it is that little bit of salt where i boat.

these are on a 500efi, not closed cooled.

Play it safe and flush for 5 to 10 minute's a side

+1

I boat in salt and flush religiously and they look great inside after 3 seasons.

Flush and you should be ok.