Wet-exhaust location

[markpierce]

What's the best location for a wet exhaust? Mine's on the port side, a short distance from the single engine. But I've seen most all on the stern.



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[model 10]

You kind of want it where it will not stain the paint, so nothing below it's lower lip.

[markpierce]

What stain? Or is your engine sick?

[CaptHead]

I think that is a matter of the boat builders preference. Diesel's don't like back pressure. Gasoline engines need some back pressure to work well so when you see a wet exhaust at the stern with a diesel engine in the boat, you will see 4" or more depending on the displacement of the engine.

In your picture i would guess that's a 2" exhaust and since it's a short run probably very little back pressure. Aside from the sound coming from the side vs stern, there is no real advantage as long as no back pressure is allowed.

You could change yours but I'd consult with the engine mfg as to size for that length. Do you have a water lift muffler? If you do, a larger one might be necessary for a longer run.

[markpierce]

Here's the boat's exhaust system. The engine is just out of sight on the left. It's less than seven feet from engine to the exhaust port through the hull. The exhaust opening is something like 3 to 4 inches in diameter.

[SailPenelope]

Looks clean and tidy, very! I don't see a reason to change, but you may want to consult an expert.

[S/V Alchemy]

I have the same setup, but on starboard. The only improvement I could make is a North Sea Transverse exhaust system, which dispenses with the anti-siphon loop, which I have found a point of failure. You simply need sufficient height in the engine bay to pull it off.