Stainless steel stacks

Discussion in 'Ask An Owner Operator' started by pavrom, Jun 18, 2021.

  1. pavrom

    pavrom Road Train Member

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    I am trying to collect as much information before ( if ) i pull the trigger on stack installation and purchase . I am looking at 7" stainless steel picket style pipes for me 2010 kw t660 , here are the questions :
    1 . Is lincoln crome reputable manufacturer of them ? Pls refer other ones
    2 . Do i need muffler ? I dont want to become deaf ( friend of mine suggested using volvo muffler because its pretty compact )
    3 . Will a gain any mpg or loose being straight piped ?
    4 . Whats the average cost for materials only including everything i need ?!
    I am entertaining an idea to get rid of fairings ( move to my other truck ) and have stacks installed , i purchased fender extensions already ...now i am thinking either have bigger tanks installed to eliminate the gap between tank and future battery box or keep my tanks ( paint them ) and have stacks installed ( thinking about getting either kw 34 battery box or international prostar tool box ( it looks more attractive and convenient ... Cheaper to ( OEM) ...
    Just wanna hear opinions
    Maybe someone have same truck as mine with them already but it does seem like rare situation from my research
     
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  3. pavrom

    pavrom Road Train Member

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    As of now i have my exhaust routed down on my pass side
     
  4. shooter19802003

    shooter19802003 Road Train Member

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    I've had 7" and 8" straights. Will they make you go deaf....no. however, they do drone on though going down the road. Your Jakes will be super loud though with no muffler. If you run west where there are long grades, it will get loud and annoying in the cab....for sure. I'm thinking about putting in a short resonator just to tone it down some. They sound sweet as all get out at idle and in town though. Like....real sweet. However, on long descents, my right ear starts to get a little sensitive. And you aren't sneaking around anywhere that is for sure. Now, I don't know about the newer aero trucks though. Mine are on a 379 with modified 6nz.
     
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  5. Roberts450

    Roberts450 Road Train Member

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    I have 7” straights from Lincoln Chrome. Just their regular ones not the stainless. Ran without a muffler for a while, and loved the sound of my 2ws but the jake was sure sharp loud in the higher rpm range, ended up with a resonator for a bit and it did tone it down a little but still pretty loud, so found a 20” donalson muffler but when I opened the box I found it had a baffle in it. Well one sawsall blade later the baffle was on the floor and its just about right now. Still plenty loud in the low end but the upper end quieted down a lot but you still know there’s a kitty under the hood.

    Why are you looking at the stainless?
    Dynaflex is also makes the big stacks and Roadworks just entered the stack game too. I went lincoln because I wanted single piece pipes.
     
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  6. wore out

    wore out Numbered Classic

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    I have always bought quality chrome pipes. The stainless have a different tone or ring hard to describe but at any rate they drive me crazy. Just an opinion. They make a small resonantor that will quiet them some. Putting a muffler back on defeats the purpose of straights. I’m sure they flow better, that said you will not feel or see any difference in performance
     
  7. Stray_Dog

    Stray_Dog Light Load Member

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    In my experience stainless pipes tend to turn colors when they get hot compared to good quality chrome exhaust.

    I've have good luck with Dynaflex but it's pricey. Lincoln has been good also and priced more reasonably.
     
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  8. pavrom

    pavrom Road Train Member

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    Stainless will last longer and won't rust
     
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  9. lester

    lester Road Train Member

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    Doesn't a 2010 have a DPF? Or is it pre or did it fall off?
     
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  10. 50WT

    50WT Light Load Member

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    I've got 8 inch dynaflex with a resonator under the cab with picket elbows.
    This is on a 2017 Pete 389 with a 12.7 detroit. The sound is awesome,
    jakes are loud but otherwise not so bad, inside cab is quiet enough to
    carry on a conversation without shouting. 555431 miles and no problems,
    no discoloration no leaks. My only gripe would be you're looking at about
    1/4 of the mirror of stack ,maybe this would be better with 7 inch.
    I've gotten used to the mirror thing and wouldn't want to change them.
    Absolutely love the look!
     
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  11. pavrom

    pavrom Road Train Member

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    It has 7cz
     
    lester Thanks this.
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