Atomic 4 Exhaust Elbow - SailNet Community
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post #1 of 14 Old 12-22-2008 Thread Starter
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Atomic 4 Exhaust Elbow

Please help! I have a Atomic 4 that I found to have an exhaust leak. I removed the exhaust and it seems to be fabricated out of galvanized steal. Super rusted through as well. The exhaust goes to one part of the muffler and the water line goes to another part of the muffler. I wish to put a 1 1/4 in 45º water injected elbow and replace the muffler with a modern one. Price is a bit of an issue so I am trying to see if anyone has any suggestions as to on-line merchants that would carry water injected elbows. Acutally any lists of websites that are the "Walmarts" of the marine industry. I am new to sailing and just moved into my boat. Any help is much appreciated!

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post #2 of 14 Old 12-22-2008
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moyer marine sells parts for the A4. Don Moyer is a specialist on the engine and has a great website. There are probably some marine engine shops in SD that cater to the A4, but I don't know any off hand.

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post #3 of 14 Old 12-22-2008
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I totally agree that Moyer Marine is your best online resource (next to CardiacPaul) on A4 engines and their systems.
You can get most of the parts Moyer sells at a good auto parts store for a little less but you can't get everything they sell from one place.
Since it seems you will be replacing your water lift muffler I recommend you replace all your exhaust hose at the same time. You can find the correct exhaust hose at Defender and they may even sell it here at the sailnet store.
There is also Torreson marine but they are more diesel specialists.
BTW, there is a forum specifically for the A4 under the Gear & Maintenance section. I suggest you find the Moyer Marine forums and register/post there as well (yes, it is free).

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post #4 of 14 Old 12-22-2008
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Not sure about the A4, but the exhaust loop on my Universal 5411 diesel is made up of standard 1 1/4 NPT pipe fittings (elbows, nipples, etc.). I recently replaced mine with black iron fittings from Home Depot.
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post #5 of 14 Old 12-22-2008
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The elbow is a standard fitting that you can buy at any plumbing supply house. I replaced the one on my old Pearson 30 at Home Depot. They come with the small port. Bring the old one to be sure you get the right size for the small fitting. Be sure to buy black iron. Galvanized won't last.

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post #6 of 14 Old 12-22-2008
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A second thought. In a pinch you can use a standard tee and reduce one of the legs.
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post #7 of 14 Old 12-22-2008
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Some suggestions for you, pics not necessarily in order
Attached Thumbnails
Enclosure mod.jpg   Enclosure mod 4.jpg   engine w-elbw copy.jpg   good elbow.jpg  
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post #8 of 14 Old 12-22-2008
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There's some eplanation for the above pics which I'd be happy to entertain. The boat is my Ericson 35 II, 1972.
HK
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post #9 of 14 Old 12-23-2008
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I'm not sure what the modification does but I would have given an arm for that kind of access.

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post #10 of 14 Old 12-23-2008
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Nice indeed, but I can't see if there's an access plate to get at the carb and the little screw and nut that controls the oil pressure way down on the starboard side.
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