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My 2006 SV-211 has a cracked muffler across the top. May try to patch it before ordering a new one. As I was trying to figure out root cause I thought I would look in the exhaust for blockage that could have generated enough pressure to crack the exhaust and I found this. There is a huge wad of dirty/wet fiberglass. I just bought the boat 2 weeks ago and we put 20 hrs on it with no issues. Could this be root cause? I pulled and cut a big wad of it out of there. Does the muffler have this type of packing inside? Could a baffle or something broken in the freeze that allowed this material to move into the exhaust opening? Does anyone have info on what the inside of a muffler looks like? Seems like I may need to go ahead and order a new muffler but I wanted to see what the forum thinks. Would the patch be a waste of time if I can't get all this packing clear? Thank you!
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A friend of mine made a comment that maybe the loose fiberglass fibers were an original factory defect that worked their way into the outlet port of the muffler. I didn't want to attempt this, but I think I am going to start the muffler removal process today and see how far I get. I dislocated my shoulder a few weeks ago while wakeboarding, and it popped out again yesterday when I was reaching up into that exhaust port. It may be hard to work this thing out of there with one good arm. -
If you decide to replace it, I have a very nice used one for sale. It is a direct fit, and came off of a 2007 SV-211 that we ended up doing an engine swap on.
https://www.planetnautique.com/vb5/f...from-1995-2007
I own and operate Silver Cove Marine, which is an inboard boat restoration, service, and sales facility located in Mooresville, North Carolina. We specializes in Nautiques and Correct Crafts, and also provide general service for Nautiques fifteen years old and older.
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I got it out and it looks like the crack goes all the way around the top. The inside seems to be shedding fiberglass which caused a clog and overpressured the muffler. I don't know what would cause the fiberglass to shed like that but I have ordered a new muffler to be safe and make sure I get something that will last.
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