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#1
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Muffler for loud exhaust??
Our boat (1958 Chris Craft) has a straight-6 inboard that
is raw water cooled. The exhaust exits just at the water line. It's not too loud for me, but some of my guests seem to find it loud. ~ What options do I have for muffling it? I'm thinking along the lines of an elbow that could be mounted on the transom to pipe the exhaust under water. This would not look original and I have to wrestle with whether I care about that or not. But assuming I feel it's worth the noise-reduction, would that work? Thoughts? Thanks, Gary |
#2
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Is there enough room for a 12" (I assume you're American?) square
"expansion" box just inside the transom? In broad terms it is the expansion or release of the compressed gas that makes most of the noise. eg. If you have a 4" pipe off the manifold & half way to the transom you enter that into a "pong box" of say 14" long by 6"dia & then go back to the 4". Then again immediately before the transom & once again back to 4" for the exit. If it is a wet exhaust then construct it so that the bottoms of all pipes & boxes are lined up level. If you are in Aussie let me know as I know a chap who designs & installs these in boats from 18' ski jobs right up to trawlers. BruceM "Gary Warner" wrote in message ... Our boat (1958 Chris Craft) has a straight-6 inboard that is raw water cooled. The exhaust exits just at the water line. It's not too loud for me, but some of my guests seem to find it loud. ~ What options do I have for muffling it? I'm thinking along the lines of an elbow that could be mounted on the transom to pipe the exhaust under water. This would not look original and I have to wrestle with whether I care about that or not. But assuming I feel it's worth the noise-reduction, would that work? Thoughts? Thanks, Gary |
#3
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Check out these guys: http://www.centekindustries.com/prod_02.html
-- Keith __ Suppose you were an idiot. And suppose you were a member of Congress. But I repeat myself. --Mark Twain "Gary Warner" wrote in message ... Our boat (1958 Chris Craft) has a straight-6 inboard that is raw water cooled. The exhaust exits just at the water line. It's not too loud for me, but some of my guests seem to find it loud. ~ What options do I have for muffling it? I'm thinking along the lines of an elbow that could be mounted on the transom to pipe the exhaust under water. This would not look original and I have to wrestle with whether I care about that or not. But assuming I feel it's worth the noise-reduction, would that work? Thoughts? Thanks, Gary |
#4
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"Gary Warner" wrote in message ...
Our boat (1958 Chris Craft) has a straight-6 inboard that is raw water cooled. The exhaust exits just at the water line. It's not too loud for me, but some of my guests seem to find it loud. ~ What options do I have for muffling it? New guests or better drinks. |
#5
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Thanks for the thoughts & links. Gary |
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