[Sea Note]

I have used two high-temp forms-a-gasket materials with success in marine applications: I use RTV copper at the joint from my headers to my pipes in my go-fast (coming off of supercharged 1100HP gas engine) and a ceramic-feeling paste (can't member the name, but it was something like $165 a tube the last time I bought it) for the joint from the turbo to the collector on my 12-71 TI Detroits. I would recommend the latter in an application that close to the turbo, although exhaust temps from a small yanmar are probably less than what my Detroits are throwing off. Let me know if you need the name and I will make an excuse to go over to the boat and take a picture of the tube (I think it's in the safe or something).