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Preventing Turbo Whistle Noise

Discussion in 'Ask An Owner Operator' started by Perilously9, Sep 29, 2019.

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  1. Sep 29, 2019 #1
    Perilously9

    Perilously9 Bobtail Member

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    Recently I rode along in one of my friend’s straight piped 95 w9. It was a great truck, but one thing that really stood out to me was how loud that turbo was. I’ve always preferred loud trucks lol, but this turbo was like nails on a chalk board. It was way too high pitched and it really hurt my brain for the 2 hours I was riding in it. Really you couldn’t even hear the engine, just to turbos the whole time.
    So my question is, how can you prevent a high pitched turbo sound while still keeping a loud truck? I like that gurgling and rumbling noise, especially from the Detroit series 60s. I think cats just generally have loud turbos, but anyways how can you prevent a turbo from being too high pitched that you can’t even hear anything else?
    Here are some examples

    This is in my opinion a too loud turbo


    This is the perfect sound. That rumbling and gurgling noise with not too much turbo whistle


    Another good example
     
    Perilously9, Sep 29, 2019
    Perilously9, Sep 29, 2019
    #1
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  3. Sep 30, 2019 #2
    Diesel Dave

    Diesel Dave Last Few of the OUTLAWS

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    How many times are you gonna post the “SAMETHING” ? We seen it the first time.
     
    Diesel Dave, Sep 30, 2019
    Diesel Dave, Sep 30, 2019
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  4. Sep 30, 2019 #3
    x1Heavy

    x1Heavy Road Train Member

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    I believe this is a second thread in addition to the first already active Maybe the Mods can merge them.
     
    x1Heavy, Sep 30, 2019
    x1Heavy, Sep 30, 2019
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  5. Sep 30, 2019 #4
    Trucker186

    Trucker186 Medium Load Member

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    Buy a new ####ty emmisions rig lmao
     
    Trucker186, Sep 30, 2019
    Trucker186, Sep 30, 2019
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  7. Sep 30, 2019 #5
    Ezrider_48501

    Ezrider_48501 Road Train Member

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    Just remove the turbo truck will run without it and your roll lots of coal and best of all no more of that annoying turbo whistle.

    But really mufflers and sometimes air filter housings can be designed to reduce noise. Otherwise lots of dynamat in the cab helps reduce noise inside.
     
    Ezrider_48501, Sep 30, 2019
    Ezrider_48501, Sep 30, 2019
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  8. Sep 30, 2019 #6
    blacklabel

    blacklabel Heavy Load Member

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    I prefer it to whistle, it's working. Like dwarves whistling while they work.
     
    blacklabel, Sep 30, 2019
    blacklabel, Sep 30, 2019
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  9. Sep 30, 2019 #7
    Intothesunset

    Intothesunset Road Train Member

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    First question what year engine in the 95 KW? If it sounds like the first video than I'm guessing it's a 98 up 12.7 with a vgt turbo. Put an old non waste gate turbo on it and program it and reprogram it and that should fix the turbo whine. Or check for boost leaks.
     
    Intothesunset, Sep 30, 2019
    Intothesunset, Sep 30, 2019
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  10. Sep 30, 2019 #8
    D.Tibbitt

    D.Tibbitt Road Train Member

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    Me i love the turbo whine. Really i love listening to an engine just work . its one of the most beautiful sounds ever created. More beautiful than the most beautiful orchestral symphony
     
    D.Tibbitt, Sep 30, 2019
    D.Tibbitt, Sep 30, 2019
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  11. Sep 30, 2019 #9
    ChevyCam

    ChevyCam Light Load Member

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    Agreed.
     
    ChevyCam, Sep 30, 2019
    ChevyCam, Sep 30, 2019
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  12. Sep 30, 2019 #10
    Intothesunset

    Intothesunset Road Train Member

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    I like the middle video the best. That truck has 7 or 8 inch straight pipes and something like 3.90 axle gears unless he was empty.
     
    Intothesunset, Sep 30, 2019
    Intothesunset, Sep 30, 2019
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