Originally Posted by captlloyd
You don’t need to run a dry exhaust through any rubber hoses. You need to be aware that if your piping is going to run near or through bulkheads, decks or any other part of a boat
that is wood or fiberglass
that you need to make sure it is either insulated or the temperature at that point is not excessive. A heat measuring device would be employed at any critical point. Of course my boat
so no issue. But many commercial fishing
boats run dry stacks, even smaller ones. It sure simplifies things.
Dry-stack exhausts are difficult on recreational boats. The engine
itself still needs to be cooled, so a keel-cooler is fitted on the exterior of the vessel. This needs cleaning
and zincs. Further, when the stack goes up through the salon
, needs to evacuate a lot of heat, which requires relatively large blowers to suck air up through engine
Temp measuring device is a good idea on wet exhaust too. Traditional alarm
on the engine doesn't trigger until it is really hot, which may be too late. Steve d'Antonio mentions this type in one of his articles. Simply zip-tie to the exhaust after the mixing elbow
. If it reaches 165-degrees, triggers an alarm
much more quickly. Under $100 and pretty good insurance
Wet Exhaust Temperature Alarm by Borel Manufacturing Inc.