Vernatone muffler inline, one louder than the other

Discussion in 'Propulsion' started by sdowney717, Sep 26, 2016.

  1. sdowney717
    Joined: Nov 2010
    Posts: 1,175
    Likes: 85, Points: 58, Legacy Rep: 274
    Location: Newport News VA

    sdowney717 Senior Member

    I have twin engines with the inline vernatone mufflers.
    Starboard side is much noisier than port side.
    I also notice starboard engine when rev up has more reverberance sounding in the cabin than the port engine.

    Is there a way to examine them and see if they are internally broken?
    If one is broken, how would you cut them open to repair?
    They do not leak at all, can the baffles inside fail?

    Is there an in and an out direction? (actually might be an arrow on the decal)
    Is there an up or down direction? (there is a drain)
    Can they freeze and break? (I have never taken out the drain plug.)
    I just don't remember the details of mine.
    I thought about switching side to side.

    These are either the 4" or 5" inline mufflers. And I will get the measurements.
  2. JSL
    Joined: Nov 2012
    Posts: 811
    Likes: 64, Points: 28, Legacy Rep: 41
    Location: Delta BC

    JSL Senior Member

    contact the mfr, they may have a troubleshooting guide.
  3. kapnD
    Joined: Jan 2003
    Posts: 1,301
    Likes: 414, Points: 83, Legacy Rep: 40
    Location: hawaii, usa

    kapnD Senior Member

    Check your raw water pump on the loud side.
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