I've determined that I need to cobble up a hot section, which the boat did not have when I bought it. What it has is a short section of curved, double-walled bronze pipe, where the water injects and then mixes with the exhaust as it exits:
This was attached directly to the exhaust port of the manifold. Then a short section of exhaust hose went from the tail end of this pipe to the Vetus waterlift muffler.
However, upon re-installing it, I have determined that it's simply not a good setup, based on everything I've read and the diagrams I've seen of how a waterlift muffler is supposed to work. The problem is that the end of that pipe is lower than the inlet to the Vetus. So the short section of hose has to head down and then curve sharply back up to connect to the inlet of the Vetus. This am no good.
So I'm going to replace it with a short hot section. I want to use black iron.
I've looked at Lowe's, Home Depot, and the local family-run hardware store that has been in business in Richmond for something like 100 years.
Nobody has much in the way of 1-1/4" black iron pipe or fittings. I can get all the galvanized stuff I could possibly carry. But black iron, in 1-1/4" size, is pretty hard to find. Lowe's has a couple elbows, but no actual pipe or nipples. They have plenty of stuff in 1" and smaller, but nothing in 1-1/4". Home Depot didn't have anything at all.
I'm going to run over to a local plumbing supply place I found by Googling. I called the guy and he said he had some stuff and I should come over and see what he's got and "bring your list." I'll do that right after lunch today.
If that doesn't work out, I'll have to keep digging for another plumbing supply house.
So where did you get your 1-1/4" black iron pipe, if you in fact used that for your hot section?
This was attached directly to the exhaust port of the manifold. Then a short section of exhaust hose went from the tail end of this pipe to the Vetus waterlift muffler.
However, upon re-installing it, I have determined that it's simply not a good setup, based on everything I've read and the diagrams I've seen of how a waterlift muffler is supposed to work. The problem is that the end of that pipe is lower than the inlet to the Vetus. So the short section of hose has to head down and then curve sharply back up to connect to the inlet of the Vetus. This am no good.
So I'm going to replace it with a short hot section. I want to use black iron.
I've looked at Lowe's, Home Depot, and the local family-run hardware store that has been in business in Richmond for something like 100 years.
Nobody has much in the way of 1-1/4" black iron pipe or fittings. I can get all the galvanized stuff I could possibly carry. But black iron, in 1-1/4" size, is pretty hard to find. Lowe's has a couple elbows, but no actual pipe or nipples. They have plenty of stuff in 1" and smaller, but nothing in 1-1/4". Home Depot didn't have anything at all.
I'm going to run over to a local plumbing supply place I found by Googling. I called the guy and he said he had some stuff and I should come over and see what he's got and "bring your list." I'll do that right after lunch today.
If that doesn't work out, I'll have to keep digging for another plumbing supply house.
So where did you get your 1-1/4" black iron pipe, if you in fact used that for your hot section?
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