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Will straight pipes hurt my valves?

Discussion in 'Trucks [ Eighteen Wheelers ]' started by truckman29801, Nov 16, 2013.

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  1. Nov 21, 2013 #21
    Gear head

    Gear head Medium Load Member

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    Apr 1, 2012
    Belair,md
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    m100463 donaldson good muffler. Don't you think the turbo creates back pressure enough for the engine.
     
    Gear head, Nov 21, 2013
    Gear head, Nov 21, 2013
    #21
    Cat sdp Thanks this.
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  3. Nov 21, 2013 #22
    rockyroad74

    rockyroad74 Heavy Load Member

    727
    705
    Nov 24, 2010
    at home in da swamp oilin my guns
    0
    I run 8" stacks with my 3406E and it was pretty harsh at the higher end of the tach range. It was making little old ladies swerve to the shoulder! So I put one Pittsburgh Power short high flow muffler in before the Y. It mellowed out a bunch, but still has that traditional sound.

    I still have critics but not as many. I just tell these nannies to go find a better cause worthy to protest, we all have a different style, and "Shouldn't you be running off to your little tea party or flower club meeting now?"
     
    rockyroad74, Nov 21, 2013
    rockyroad74, Nov 21, 2013
    #22
    truckman29801 Thanks this.
  4. Nov 21, 2013 #23
    truckman29801

    truckman29801 Medium Load Member

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    Well when i put them on i noticed the turbo whistle came back x2 of what ive heard. And the truck seems to be running smoother, it didnt throw a code or anything , it just seemed rough . Now it pers, and yeah they are Donaldson
     
    truckman29801, Nov 21, 2013
    truckman29801, Nov 21, 2013
    #23
  5. Nov 21, 2013 #24
    truckman29801

    truckman29801 Medium Load Member

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    And to be honest i could care less about how others think my truck sounds. I like it loud if i want and quiet as well. If i get my hands on another 6v92 or 8v71 im gonna make it straight pipe :)
     
    truckman29801, Nov 21, 2013
    truckman29801, Nov 21, 2013
    #24
  7. Nov 23, 2013 #25
    Exiled

    Exiled Light Load Member

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    Apr 20, 2013
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    10 L engine. 512hp. image.jpg

    http://youtu.be/-pNGX8se7K8
     
    Last edited: Nov 23, 2013
    Exiled, Nov 23, 2013
    Exiled, Nov 23, 2013
    #25
    truckman29801 Thanks this.
  8. Nov 23, 2013 #26
    truckman29801

    truckman29801 Medium Load Member

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    Thats actually nice
     
    truckman29801, Nov 23, 2013
    truckman29801, Nov 23, 2013
    #26
  9. Nov 23, 2013 #27
    Grey Dodge

    Grey Dodge Light Load Member

    53
    20
    May 16, 2012
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    Re-badged Volvo?
     
    Grey Dodge, Nov 23, 2013
    Grey Dodge, Nov 23, 2013
    #27
  10. Nov 23, 2013 #28
    truckman29801

    truckman29801 Medium Load Member

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    Nah looks like a Re-baged Fisher price or Re-baged Tonka
     
    truckman29801, Nov 23, 2013
    truckman29801, Nov 23, 2013
    #28
    CrayzyCatPower Thanks this.
  11. Nov 23, 2013 #29
    Grey Dodge

    Grey Dodge Light Load Member

    53
    20
    May 16, 2012
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    HAHAHA!!!That was gonna be my second guess!!!
     
    Grey Dodge, Nov 23, 2013
    Grey Dodge, Nov 23, 2013
    #29
    truckman29801 Thanks this.
  12. Nov 27, 2013 #30
    WildHog

    WildHog Light Load Member

    101
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    Oct 13, 2011
    AR
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    I run straights on my ISX and Detroit 12.7 and you really can hardly tell it idling or not under load. It's under load that they start to sound off.
     
    WildHog, Nov 27, 2013
    WildHog, Nov 27, 2013
    #30
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