Originally posted by Don S:<br /> It's not "Dry Stack", it's called "Dry Joint" . It's a new concept by Merc to eliminate the problem of the thin wall between the water and the exhaust that goes bad in older manifolds and risers. They also have gaskets designed to prevent a lot of the low rpm water injestion common in the newer Vortec engines. From my experience, there are VERY FEW here that even knows what they are and how they work, or even knew there was a difference.<br />From what little I have seen of them, it seems like a great idea, and will probably save a lot of engines from hydroloc and water on the pistons.
