Noah,
Apologies if I am misunderstanding the locker layout -- I have conflicting descriptions. From Stu's photos and the description of rhe route. it looked like the hose could drop down (say at a 45 angle) after it hits the high spot right above the entry into the locker? n'est pas?
OK, now follow that hose more to the left as it exits the picture. About two feet aft to the left side of the picture is the "end" of the port locker, inside, which consists of a vertical piece of painted plywood with a hole in it. That hole is as high up as it can be. The hose goes through that hole. After the hole and the vertical plywood is the lazarette under the helmsman seat. The first time the hose has an opportunity to go down is once it gets into the lazarette.
Yes, they could have drilled the hole in the aft end lower, but that would have messed up storage in the port locker.
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Re: volume of water in riser and the different mufflers. I understand the point, Ken, but it would be extremely helpful to share engineering.
IIRC, my raw water intake hose is 1/2" and 5/8" from the rw pump to the HX and then on to the exhaust riser nipple. Assuming that those hoses are full, the 1 5/8" hose then would be a lot less full of water. Also, if IIRC, the rw pump could be all of maybe 6 gpm. So, when the engine shuts down, it appears, prior to even a rigorous engineering analysis, that there simply can't be a whole lot of water in say, 10 feet of that 17 foot exhaust hose. Then, as you said, compare that to the volume of the muffler.
My point is that we shouldn't be giving Jim any reasons for concern about his new muffler installation, nor giving him any sleepless nights worrying about having to drop the aft end of his hose in his port locker.
