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Old 08-18-2014, 10:15 AM   #1
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hobbystuff's Avatar
City: Victoria, BC
Country: Canada
Vessel Name: Waves of Grace
Vessel Model: Universal 36
Join Date: Aug 2012
Posts: 46
Waterlift Muffler Mounting

So a quick question - my waterlift muffler on the Lehman is simply screwed down to one of the floorboards in the engine room. This seems like a great way to make excessive noise.

Those with waterlift mufflers, any feedback on how you have them mounted? Would mounting on vibration isolation help?

Thanks in advance for feedback.

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Old 08-18-2014, 11:06 AM   #2
O C Diver's Avatar
City: Fort Myers, FL... Summers in Crisfield, MD
Country: USA
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 3,382
Soundown makes great isolation mounts. My trawler came with their isolators on the engine and gear. But the also make mounts to isolate other vibrations. My genset sound shield was isolate from the stringers with their mounts. And both the engine and genset water lift mufflers are isolated with their mounts. Of the four sets on the boat, none are the same size which speaks to the large range of sizes they offer. Here is a link with the second image being the ones on my water lift muffler.



I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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Old 08-18-2014, 11:12 AM   #3
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City: Concrete Washington State
Country: USA
Vessel Name: Willy
Vessel Model: Willard Nomad 30'
Join Date: Oct 2007
Posts: 11,937
My knee jerk response would be to mount the lift muff and the platform firm enough that they will not shake either from dynamic internal sources or from vibration passing along the exhaust hose.

Re the latter accordion like SS flexible exhaust couplings are available. I may benefit from that as my exhaust hose is very ridged and I have a high riser. The further one gets from the center of motion of the engine the more movement there is.

North Western Washington State USA
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