Posted by JimM on January 30, 2003 at 05:59:16:
In Reply to: Material for wet exhaust posted by ken on January 24, 2003 at 18:48:42:
I have no background at all, but I should think you ought to find some books and pubs on the subject. The Coast Guard may have specific requirements for materials and wall thicknesses, configuration, etc. Also try Power Squadron pubs.