Noise Suppression

seakas

Cadet
Joined
Jan 16, 2013
Messages
19
Morning Folks,

I have a 1987 Evinrude 4hp (model number E4BRHCUD). It is noticeably louder than any outboard of equal HP I've been around. Is it just me or have others noticed this? Can anything be done to tone it down?

Thanks!

Mark
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: Noise Suppression

The mtr was so designed and there doesn't seem to be anything to quiet it down. As a JOKE. Don't run it or buy a 4 stroke:laugh:
 

kodibass

Master Chief Petty Officer
Joined
Apr 10, 2010
Messages
864
Re: Noise Suppression

does your cowl have insulation inside ? if there is a side access plate on you motor does it have a gasket, do you have a air silencer cover on that motor? and lastly does your transom hight allow for the cav plate to be low enough in the water ? check these things first there may be other issues, and options available to drop a few dcbu.
 
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