Why not use a hose instead of copper pipe?

[bobk]

The copper pipes that carry raw water away from the heat exchangers on my 6V92TA's are pitting again. This always happens at the first bend where the pipe is presumably a bit thinner. After the first time, I followed the suggestion on the forum to not paint the part of the pipe under the attaching hose, but it has leaked twice since in 8 years. Is there any reason why these cannot be replaced with a suitable hot water resistant hose?

Bobk

 

[Boatsb]

I had the pipes removed from the flanges and new heavy walled copper tig welded in to do just that. Worked well. I had little choice as replacement pipes are not available for my engines

 

[Bob Bradley]

I replaced one of mine with exhaust rated hose several years ago. No problems yet.