This may be a stupid question, but I'm trying to understand how much water
is normally retained inside a wet exhaust muffler
once the engine
is shut down. It makes sense to me that it should be pretty full of water
, but I don't know. I ask because I hear sloshing on one side of the boat and not the other (twin engines, hence twin mufflers), and because I have about a 1" list to the side where I hear the water and I can't otherwise figure out where the imbalance is coming from.
Here are some specifics. The mufflers are horizontal Centeks, but they are custom to this boat and glassed into place. They have an oval cross section with the oval standing vertically. Exhaust
enters one end in the upper portion of the oval, and exits the other end from the same upper portion.
I don't know what the internal construction looks like, but my presumption given the oval shape and exhaust entering and exiting the upper half, is that the lower half of the muffler
fills with water and remains filled. When the engine
is running, new water flushes through. There also is what appears to be a drain plug
on the end of the muffler which further supports the notion of a water pool.
Is this right? Or is water NOT supposed to accumulate in the lower part of the muffler?