Convert a Marine Wet Exhaust Hose into a Dry Exhaust Hose

The wet exhaust system is most popularly used in marine engines. They are most frequently used in smaller sailboats. Almost all marine engines are cooled with seawater by passing it directly or indirectly through a heat exchanger system.

Marine wet exhaust hoses are the used in the wet exhaust system to discharge sea water after it has been used to cool the engine. The tricky part about them is their installation. If that isn’t done correctly, then wet exhaust system can cause trouble.

Wet exhaust systems are often used together with the exhaust system that passes the gases via the hull to exit through the stern. The marine wet exhaust hose tones down the vibration and the noise which can become unbearable after a while.

Here is how to convert a wet exhaust system into a dry one:

• You will need a water reservoir to fit near the exhaust manifolds. Use stainless steel as it is anti-corrosive.

• Next you need to install an inlet spigot at the head of the reservoir and an outlet spigot at the bottom of it.

• Now you will need to make up a bracket for the reservoir. Use the existing bracket bolts by unscrewing them and adding the bracket reservoir before tightening them in place.

• At the exit of the water pump splice the T-joint junction within the water hose. Now slice the marine wet exhaust hose in half and attach hose clamps on both ends. Using the hose clamps tighten them in place with the T-joint.

• Cut a piece off the hose that is connecting the T-joint to the reservoir. Slide this piece over the hose spigot and tighten in place using hose clamps.

• Drill one hole in each exhaust collector, just after the exhaust manifold ends. Now tack-weld a bolt in place of each of these holes. Form a thread inlet by welding the bolt’s parameter to the exhaust collector.

• Use a coupling and drill a hole in its threaded section. Thread the coupling to the recently made injection port bolt.

• Lastly, connect the boat’s water jet coupling to its reservoir outflow spigot. Now the water pump will start pressurizing the system and start dampening the sound of the boat.

Congratulations! You have just converted a marine wet exhaust hose to a dry one!