How do I free my muffler? |
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DockDoc
Senior Member Joined: February-17-2014 Location: Charlotte, NC Status: Offline Points: 474 |
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Posted: October-15-2019 at 11:59am |
This seems like it should be stupid easy... Loosened all the hose clamps (including at the back end of the muffler). The damn exhaust hoses just won't budge. I can spin them a tiny bit so I think they're not stuck on or anything, it just seems like there's no room to move them around at all. Do I have to remove the risers (trying to avoid so I don't have to replace those gaskets)? Any other tips?
Why... Boat was overheated at some point previously and there's damage to the muffler. Going to try a delete first (I have the y-pipe and exhaust hose) and if that's too noisy, I'll repair/replace the muffler. Here's what I'm working with: |
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1993 Sport Nautique
PCM 351w, no ProTec |
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GottaSki
Grand Poobah Joined: April-21-2005 Location: NE CT Status: Offline Points: 3327 |
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Any binding slime or moose juice in the boat?
Nothing similar in the nightstand drawer? |
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"There is nothing, absolutely nothing, half so much worthwhile as messing around with boats...simply messing."
River Rat to Mole |
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Gary S
Grand Poobah Joined: November-30-2006 Location: Illinois Status: Offline Points: 14096 |
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26 year old hose- cut them
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DockDoc
Senior Member Joined: February-17-2014 Location: Charlotte, NC Status: Offline Points: 474 |
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Well... Good point. I'll try some lube first and if no go start hacking. Good point. |
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1993 Sport Nautique
PCM 351w, no ProTec |
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Jonny Quest
Grand Poobah Joined: August-20-2013 Location: Utah--via Texas Status: Offline Points: 2840 |
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+1 to what Gary said. Just cut those bad-boy off. It's time for new hoses after all those years. Also, if yo are planning on going "Y" pipe, you will likely need new hoses for the new configuration. (It will be louder, so be prepared).
JQ |
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Current
2003 Ski Nautique 206 Limited Previous 2001 Ski Nautique Open Bow 1994 Ski Nautique Open Bow Aqua skiing, ergo sum |
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RealDeez
Senior Member Joined: August-01-2019 Location: MI/IN Status: Offline Points: 125 |
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For personal future reference - is that the "good" kind of a lot louder or the "bad" kind of a lot louder?
Are we talking crappy old F 150 with no muffler or sexy boat here? |
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Lake James, IN
93 Sport Nautique |
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zwoobah
Senior Member Joined: September-13-2018 Location: Providence RI Status: Offline Points: 308 |
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Here's what my '68 sounds like. 351 with no mufflers, just twin rubber exhaust hoses out the stern.
It's noisy but perfect. Rear seat passengers aren't gonna have much conversation at speed. It's fine cruising around at slow speed. https://www.instagram.com/p/Bx3U1a1HWh0/?utm_source=ig_web_options_share_sheet |
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1968 Mustang 16 - 351W powered
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gt40KS
Gold Member Joined: August-05-2017 Location: Wichita Kansas Status: Offline Points: 943 |
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Did the Y-pipe myself .... Some say a bit too loud, others really like it. I LOVE it... but then I'm a gearhead at heart anyway and really appreciate the loud, throaty tones. My engine sounds about the same at speed as the link above. In the water at idle you really don't hear much of a difference. The noticeable difference comes while under way since the exhaust is at least partially exposed and especially when there is a significant load on the engine.
believe it or not, on the trailer there isn't much difference either. Well, unless you rev it like a race car - then you can really hear it. Not that I've done that .... |
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JCCI
1995 Ski Nautique GT40 |
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MrMcD
Grand Poobah Joined: January-28-2014 Location: Folsom, CA Status: Offline Points: 3590 |
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I have had success removing the hoses by warming them up, a hairdryer or heat gun help.
Then slip a putty knife or similar tool between the manifold and the rubber and squirt in some dish soap mixed with water. Warm hoses will move more than cold stiff hoses making your job easier. Don't burn them but get them almost uncomfortable to touch. Be prepared if you cut them, these are not cheap hoses to replace. |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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With fewer unmuffled older boats on the lakes, it's a sound I miss. Thankfully, I have a couple older boats that still sound like they should.
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DockDoc
Senior Member Joined: February-17-2014 Location: Charlotte, NC Status: Offline Points: 474 |
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Well like it or not I got it done... That SUCKED. Even after cutting the hoses they were still hard to get off. Then positioning the new hoses into place was no picnic either. Pulled my shoulder in the process.
Nervous to take this out for a test drive... If I don't like it, not gonna be fun to get a new muffler in there, especially since I had to cut the main 4" hose to get the Y-pipe to fit! Pics of the burned out muffler as well.... This was a failure waiting to happen, which was the main driver for this project. |
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1993 Sport Nautique
PCM 351w, no ProTec |
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FLCaptain
Groupie Joined: February-10-2019 Location: Orlando Status: Offline Points: 45 |
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Is that the factory mounting spot for your battery? I have a 1979 and before this I had a 1988. My batteries were always in the front. It kind of makes more sense having them back there.
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gt40KS
Gold Member Joined: August-05-2017 Location: Wichita Kansas Status: Offline Points: 943 |
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Glad you got it handled without too much headache. Did you have a chance to fire her up and experience that sweet sound?
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JCCI
1995 Ski Nautique GT40 |
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DockDoc
Senior Member Joined: February-17-2014 Location: Charlotte, NC Status: Offline Points: 474 |
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Not yet... hoping to get a test run in the next day or two. Will post up video with sound. |
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1993 Sport Nautique
PCM 351w, no ProTec |
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DHMcFadin
Senior Member Joined: May-27-2019 Location: Austin, Texas Status: Offline Points: 312 |
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Any sound clips yet?
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DockDoc
Senior Member Joined: February-17-2014 Location: Charlotte, NC Status: Offline Points: 474 |
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I do... Here's the link. Unfortunately the sound didn't really pick up, it sounds way too quiet on the video. No idea why, I'll try it again at some point. My observation: I like it, and the difference is more subtle than I was expecting. It's definitely louder, but contrary to others' opinions, it's much more noticeable at idle / low speed than when running / cruising. On the trailer it was SUPER loud, made me kinda nervous. My theory is that my muffler was so fried internally that it really wasn't doing anything anyway, because this just doesn't sound much louder. I'll need to give it some regular use over the next season to decide if I want to keep this setup or put a new muffler in to quiet it down, but initial impression is that it brings out that throaty V8 sound and yet isn't obnoxiously loud inside the boat. |
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1993 Sport Nautique
PCM 351w, no ProTec |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41040 |
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Faceplant
Senior Member Joined: July-27-2013 Location: Otter Lake , Mi Status: Offline Points: 403 |
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Hard to tell with video. Does it sound like a regular dual exhaust boat or louder ?
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Feels like I am hanging 10 but in reality - probably hanging 6.
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Moody Blue
Groupie Joined: July-24-2015 Location: indianapolis,In Status: Offline Points: 78 |
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Sounds great at idle!
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gt40KS
Gold Member Joined: August-05-2017 Location: Wichita Kansas Status: Offline Points: 943 |
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I think it sounds great and it's definitely an improvement even if it's not as noticeable as you think while under way. Trust me, others outside your boat hear it much more clearly than you can. Boating buddies have told me they were very jealous of my exhaust and that it was a definite difference from the old muffled sound.
Was there still water in your muffler when you pulled it? if so then it was still functioning, more or less. There's not really anything inside it to baffle the sound, merely a sound trap with water as the medium. If the inside were rotted/ decayed to the point it wouldn't hold water in the main chamber the sound would still be baffled somewhat by the offsets and path the exhaust would have to take. Exhaust straight out of the risers into pipes (hoses) out the back are definitely lower restriction and virtually baffle free. |
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JCCI
1995 Ski Nautique GT40 |
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DockDoc
Senior Member Joined: February-17-2014 Location: Charlotte, NC Status: Offline Points: 474 |
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Thanks! Yeah I think it's fine, frankly my biggest concern is making sure it's not too loud inside the boat. Initial impression is it's not, but wife hasn't been out yet... |
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1993 Sport Nautique
PCM 351w, no ProTec |
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