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Old 03-07-2018, 07:03 AM   #17
Ski in NC
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City: Wilmington, NC
Vessel Name: Louisa
Vessel Model: Custom Built 38
Join Date: Jan 2014
Posts: 6,194
A good bit of droning noise can come from engine air intake. Different brands/models use different types of air intake mufflers to varying levels of success. Installing an air filter/muffler from something like a tractor with similar sized engine can make a huge difference.
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