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10-07-2013, 17:14
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#1
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Registered User
Join Date: May 2009
Posts: 30
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Waterlift Muffler
I need to replace the waterlift muffler in my CAL 39 which has a Universal 44HP. It has a stainless waterlift leaking at the weld. Should I stick with stainless steel or go to reinforced plastic? Any suggested online vendor?
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10-07-2013, 17:19
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#2
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Registered User
Join Date: Dec 2008
Location: ontario canada
Boat: grampian 26
Posts: 1,743
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Re: Waterlift muffler
Quote:
Originally Posted by Papakina
I need to replace the waterlift muffler in my CAL 39 which has a Universal 44HP. It has a stainless waterlift leaking at the weld. Should I stick with stainless steel or go to reinforced plastic? Any suggested online vendor?
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Google "Vetus water lift muffler" for starters.
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10-07-2013, 17:26
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#3
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Registered User
Join Date: Mar 2011
Location: Nova Scotia Canada
Boat: Wharram Tiki 46
Posts: 1,321
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Re: Waterlift muffler
Go plastic (Vetus)
or Fiberglass (Centek)
They will outlast stainless by a long shot.
Cheers,
JM.
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10-07-2013, 17:36
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#4
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Registered User
Join Date: Aug 2008
Location: Wash DC
Boat: PETERSON 44
Posts: 3,165
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Why go plastic. You could probably touch up the weld ion S.S.. Vetus has a design advantage in the way it fits. But damn it costs if you forget to open up the intake or the impeller fails. Overheat burns right through plastic. Before the engine overheat warns you. A SS steel lift won't fail that way.
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10-07-2013, 18:00
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#6
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Registered User
Join Date: Aug 2008
Location: Wash DC
Boat: PETERSON 44
Posts: 3,165
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Hot gas without water will ruin the plastic lift muffler before the engine overheat cuts in. If you can fit a metal lift its a better option.
What advantage does plastic give you?
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10-07-2013, 18:06
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#7
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Registered User
Join Date: Feb 2013
Location: Oregon
Boat: Seafarer36c
Posts: 5,563
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Re: Waterlift muffler
The Centek will handle loss of water better than the plastic job. Fixing the old steel piece would save you the new installation problems because I doubt a new muffler would be a bolt in. $50 weld repair vs $?
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10-07-2013, 18:18
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#8
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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 sabray
Hot gas without water will ruin the plastic lift muffler before the engine overheat cuts in. If you can fit a metal lift its a better option.
What advantage does plastic give you?
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Not true as the plastic is designed for this muffler application and there are thousands of plastic water lift mufflers on boats.
Plastic and fiberglass water lift mufflers will not corrode or get pin hole leaks like the SS muffles do.
They are better at silencing the exhaust noise also.
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10-07-2013, 19:48
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#9
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Registered User
Join Date: Aug 2008
Location: Wash DC
Boat: PETERSON 44
Posts: 3,165
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Cotemar,
What happens if the combustion gas is not cooled by fresh water at the exhaust elbow. It melts the next lowest temperature rated piece in line. I do not reccomend trying this. A stainless muffler will survive much better. How can I be wrong.
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10-07-2013, 19:53
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#10
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Registered User
Join Date: Aug 2008
Location: Wash DC
Boat: PETERSON 44
Posts: 3,165
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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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10-07-2013, 20:15
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#11
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Registered User
Join Date: May 2012
Posts: 467
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Re: Waterlift muffler
How long did the ssteel one last
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10-07-2013, 21:36
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#12
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Registered User
Join Date: Aug 2008
Location: Wash DC
Boat: PETERSON 44
Posts: 3,165
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Quote:
Originally Posted by sartorst
How long did the ssteel one last
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Longer. Then the vetus plastic elbow will.
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10-07-2013, 23:28
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#13
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Registered User
Join Date: Mar 2009
Location: Australia, Hervey Bay QLD
Boat: Boden 36 Triple chine long keel steel, named Nekeyah
Posts: 909
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Re: Waterlift muffler
My experience with stainless waterlift mufflers is not good. Mine seem to suffer from crevice corrosion within five years. If you have the chance, replace with plastic, and fit a good exhaust temp monitor.
Regards,
Richard.
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11-07-2013, 16:57
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#14
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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
I would suggest to go plastic (Vetus). Even if you overheat the engine and have to replace, chances are you will not overheat (if you do your maintenance). SS has a life or <5 years +/-. Vetus will last much longer (and is much less than SS). So if you get more than 5 years on the Vetus, you are ahead of the game.
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11-07-2013, 17:10
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#15
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Moderator
Join Date: May 2008
Location: cruising SW Pacific
Boat: Jon Sayer 1-off 46 ft fract rig sloop strip plank in W Red Cedar
Posts: 21,135
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Re: Waterlift muffler
Can't say universally, but in the three yachts with inboard engines that I have owned, if the cooling water stops flowing there is a very noticeable change in the exhaust note. Should be enough to get one's attention.
Every metal waterlift that I have owned has developed leaks. None of the Vetus FRP ones have had any problems.
Cheers,
Jim
__________________
Jim and Ann s/v Insatiable II, lying Port Cygnet Tasmania once again.
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