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  1. #1
    Join Date
    Feb 2014
    Location
    Paris Texas
    Posts
    12

    Default Exhaust question?? Is this part a muffler????

    moomba exhaust.jpg

    Is the section outlined in the picture the muffler? And can it be removed and flow straight out the rear of the boat with out any problems? like heat? The motor on this 2008 mobius xlv is to quiet!!!
    I had a 2000 Malibu sportster with no mufflers and it had the sweetest sound. But was not loud.
    Thanks
    2008 Moomba Mobius XLV

  2. #2
    Join Date
    Feb 2010
    Location
    Hartwell Ga./Lilburn Ga.
    Posts
    100

    Default

    Yes that is your muffler, But there my be some problems with removing it. You have to consider things like water inversion, back pressure and check valves. You may want to consult Indmar.
    04 LSV

  3. #3
    Join Date
    Oct 2013
    Location
    Ft. Collins, CO
    Posts
    129

    Default

    Yes, that's the muffler. I can't think of any significant reason why it couldn't be removed. Certainly not heat; I don't know when mufflers came into standard use on ski boats but it is only recently. If anything, having a muffler might add a little heat to the engine compartment given more heat exchange area. But because the exhaust is wet things are already nice and cool. There might be some impact if the fuel control is tuned to include the muffler and would thus be slightly out of tune but that seems minor.

    My old boat has the same 350 engine as the new one but the new has the exhaust. To be honest, they sound very similar. The new one is quieter at speed but the tone/rumble is the same. I really don't notice any difference at idle. It is obnoxious and difficult to carry on conversations in the old boat at towing speed. I've never had anyone say that they like the sound. Everyone likes the sound of both boats at idle. I wouldn't even think of removing the muffler. I think the overall experience would suffer without any real gain.
    Last edited by gregski; 02-16-2014 at 11:21 AM.
    2007 Mobius LSV
    1989 Sanger Skier DX - sold

  4. #4
    Join Date
    Feb 2014
    Location
    Paris Texas
    Posts
    12

    Default

    Ok thanks for the help!!!!
    2008 Moomba Mobius XLV

  5. #5
    Join Date
    Jun 2014
    Posts
    2

    Default

    Have the same type of muffler on my 2004 LSV and it is leaking fro the drain plug at the bottom of the muffler. It is a small hex head bolt, and appears to go into fiberglass. Can I just up size this bolt to make a tighter fit, or is it backed up with some type of metal inside and need to tap it? Thanks

  6. #6
    Join Date
    May 2009
    Location
    Carlton Oregon
    Posts
    5,962

    Default

    Quote Originally Posted by smitruck View Post
    Have the same type of muffler on my 2004 LSV and it is leaking fro the drain plug at the bottom of the muffler. It is a small hex head bolt, and appears to go into fiberglass. Can I just up size this bolt to make a tighter fit, or is it backed up with some type of metal inside and need to tap it? Thanks
    Yes you can upsize the bolt no issues.
    Malo <--- Means--Evil or Mean One. This explains a lot.
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  7. #7
    Join Date
    Jun 2014
    Posts
    2

    Default

    Thanks for the info.

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