W900 7" straights

Discussion in 'Kenworth Forum' started by Zooky, Mar 10, 2015.

  1. Zooky

    Zooky Bobtail Member

    33
    3
    Aug 16, 2014
    Farmington NM
    0
    My truck has the 7" miter cut straight exhaust on it. And it is very loud. The truck is a daycab. I'm looking for a small 5" in/out muffler/resonator with no more than 7" body and 18" long. Anybody have any ideas? Or is there a good way to tone the truck down a little? I love the sound but the sweet spot of the truck has a really loud drone.
     

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  3. sliver

    sliver Light Load Member

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    Feb 17, 2015
    idaho
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    Go to kenworth or any truck dealer. I had w9 with 7s and it had a lil resonater like you describe it toned it down pretty good after a f ew years I had to replace it just went to kw explained what I wanted and bingo
     
  4. Long FLD

    Long FLD Road Train Member

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  5. russtrucker

    russtrucker Road Train Member

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  6. Ruthless

    Ruthless Road Train Member

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    The City.
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    I have 7" straights. I have a little resonator up underneath...I can't tell you if it's quieter with it-but it's not quiet by a long shot.even idling. Pretty loud.
    Muffler? Taller pipes (push the sound a bit further away) ?
     
  7. Zooky

    Zooky Bobtail Member

    33
    3
    Aug 16, 2014
    Farmington NM
    0
    I'll look into th resonator! I don't want to quiet it down a ton just get a little bit of the drone in lower rpm. I thought about going taller stacks but I'm already maxed out on height because I have to load under asphalt plants lol seen a buddy bend his backwards on the rack. Thank you for the info!
     
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