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11-07-2013, 17:27
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#16
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Registered User
Join Date: Aug 2006
Location: Skagit City, WA
Posts: 25,453
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Re: Waterlift muffler
#1 fiberglass.....
#2 Plastic
#3 SS
#4 JMHO
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard
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11-07-2013, 17:28
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#17
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Registered User
Join Date: Aug 2006
Location: Skagit City, WA
Posts: 25,453
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Re: Waterlift muffler
Quote:
Originally Posted by sabray
It is not designed for straight gas temps. A few minutes of direct uncooled gas will melt a vetus exhaust lift.
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Doesnt matter, the hose will melt anyway....
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard
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11-07-2013, 17:56
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#18
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Marine Service Provider
Join Date: Nov 2008
Location: Port Credit, Ontario or Bahamas
Boat: Benford 38 Fantail Cruiser
Posts: 7,047
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Re: Waterlift muffler
Whenever I come across a plastic waterlift muffler in a survey inspectio it gets an automatic comment ........
Plastic mufflers are known to melt quickly if raw water flow is halted. Installation of a raw water flow detector and alarm is advised.
__________________
If you're not laughing, you're not doin' it right.
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11-07-2013, 18:01
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#19
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Registered User
Join Date: Mar 2007
Location: Santa Cruz
Boat: SAnta Cruz 27
Posts: 6,683
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Re: Waterlift muffler
Just encase the current leaking muffler in fiberglass.
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11-07-2013, 18:15
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#20
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Registered User
Join Date: Aug 2006
Location: Skagit City, WA
Posts: 25,453
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Re: Waterlift muffler
Quote:
Originally Posted by boatpoker
Whenever I come across a plastic waterlift muffler in a survey inspectio it gets an automatic comment ........
Plastic mufflers are known to melt quickly if raw water flow is halted. Installation of a raw water flow detector and alarm is advised.
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Do you make that comment on the rubber hose also?
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard
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11-07-2013, 18:29
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#21
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Registered User
Join Date: Dec 2007
Boat: Mahe 36, Helia 44 Evo, MY 37
Posts: 5,731
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Re: Waterlift muffler
Quote:
Originally Posted by boatpoker
Whenever I come across a plastic waterlift muffler in a survey inspectio it gets an automatic comment ........
Plastic mufflers are known to melt quickly if raw water flow is halted. Installation of a raw water flow detector and alarm is advised.
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The rubber hose cooks way before the water lift muffler would.
You must make that comment on all your inspections since 90% of boats have plastic or fiberglass = plastic mufflers.
Maybe you should just buy a rubber stamp to save making the automatic comment.
Make another rubber stamp for the leaking SS mufflers to save you more time.
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11-07-2013, 18:33
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#22
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Registered User
Join Date: Sep 2012
Posts: 92
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I can confirm the hose will outlast the plastic lift muffler.
A sensor in the hose with an alarm is a simple install and insurance to make sure raw water is flowing vetus sells both.
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11-07-2013, 18:34
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#23
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Registered User
Join Date: Feb 2013
Location: Oregon
Boat: Seafarer36c
Posts: 5,563
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Re: Waterlift muffler
Quote:
Originally Posted by Cheechako
Do you make that comment on the rubber hose also?
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The inside of the hose seems to turn to a carbon like surface and holds up for a bit. Longer perhaps than a thin plastic muffler.
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11-07-2013, 18:42
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#24
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Registered User
Join Date: Dec 2007
Boat: Mahe 36, Helia 44 Evo, MY 37
Posts: 5,731
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Re: Waterlift muffler
Last time I forgot to open the cooling water">engine cooling water valve it was in just a few minutes before I smelled what I thought was a tire fire below. Its a pretty good sign that your water cooling valve is closed.
Did that two times in five years and the plastic muffler never had a problem.
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11-07-2013, 18:47
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#25
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Registered User
Join Date: Apr 2008
Location: U.S., Northeast
Boat: Currently boatless
Posts: 1,643
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Re: Waterlift muffler
Quote:
Originally Posted by boatpoker
Plastic mufflers are known to melt quickly if raw water flow is halted. Installation of a raw water flow detector and alarm is advised.
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+1 (personal experience!)
__________________
... He knows the chart is not the sea.
-- Philip Booth, Chart 1203
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11-07-2013, 18:49
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#26
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Registered User
Join Date: Apr 2008
Location: U.S., Northeast
Boat: Currently boatless
Posts: 1,643
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Re: Waterlift muffler
Quote:
Originally Posted by Cotemar
The rubber hose cooks way before the water lift muffler would.
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Plastic muffler will certainly melt before the exhaust hose...
__________________
... He knows the chart is not the sea.
-- Philip Booth, Chart 1203
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11-07-2013, 20:51
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#27
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Registered User
Join Date: Aug 2008
Location: Wash DC
Boat: PETERSON 44
Posts: 3,165
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Re: Waterlift muffler
Quote:
Originally Posted by Cheechako
Doesnt matter, the hose will melt anyway....
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well no. I screwed up and the hose did not melt the first elbow on the vetus burned through. It does not take much straight exhaust to melt plastic. been there screwed up.it is what happened.
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11-07-2013, 21:33
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#28
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Registered User
Join Date: Dec 2012
Posts: 25
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Under normal operations the fiberglass and plastic muffler do outlast stainless steel for many years. That's the only matter that counts.
If you experiencing frequently upset conditions in your raw water feed, you need to address those and you better install a raw water flow indicator because checking the exhaust water flow and listening to the splash does not work for you. I have a Vetus muffler installed for 20 years. And when it fails: NO STAINLESS STEEL replacement.
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11-07-2013, 22:28
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#29
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Registered User
Join Date: Mar 2003
Location: Philippines in the winters
Boat: It’s in French Polynesia now
Posts: 11,368
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Re: Waterlift muffler
Yeah! But.........
__________________
Faithful are the Wounds of a Friend, but the Kisses of the Enemy are Deceitful! ........
The measure of a man is how he navigates to a proper shore in the midst of a storm!
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12-07-2013, 06:35
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#30
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Registered User
Join Date: Jan 2011
Location: Full time cruiser
Boat: Amel Super Maramu 53
Posts: 219
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Re: Waterlift muffler
Quote:
Originally Posted by boatpoker
Whenever I come across a plastic waterlift muffler in a survey inspectio it gets an automatic comment ........
Plastic mufflers are known to melt quickly if raw water flow is halted. Installation of a raw water flow detector and alarm is advised.
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Why would you comment on it when it is a perfectly good muffler? Isn't the purpose of a good surveyor to be objective and point out known hazards or potential failures. A plastic muffler is none of this. It is just your opinion, which in my opinion doesn't belong on a document of seaworthiness.
Also, regardless of the muffler, all boats would do well to have installed a water flow detector and alarm. This is just plain $100 common sense to protect the $20,000 engine.
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