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simple one... stock dauntless exhaust pipe size?

Discussion in 'Early Jeep Restoration and Research' started by schardein, Oct 15, 2004.

  1. Oct 15, 2004
    schardein

    schardein Low Range Therapy

    Success, MO
    Joined:
    Aug 11, 2003
    Messages:
    553
    What size pipe do the stock manifolds run? I am in the market for parts to put my exhaust back to a stock layout. Might have a line on a flowmaster muffler for cheap but need to know what size pipe the stock manifolds are designed to use so I get the right muffler.
    Thanks
     
  2. Oct 16, 2004
    maxx

    maxx Banned

    Menlo Park, Ca
    Joined:
    Apr 22, 2003
    Messages:
    171
    Gunny, think small & adapt if necessary. Large dia exhaust pipes suck moisture in when shut down, and cooled. I ran a 2 1/2" exhaust on a 67 camaro and the mufflers rusted out quickly. Large dia exhaust is for hi horsepower/hi rpm engines. Go small and rig up adapters as needed. My 2c worth anyway.
     
  3. Oct 16, 2004
    schardein

    schardein Low Range Therapy

    Success, MO
    Joined:
    Aug 11, 2003
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    553
    I'm tracking with that. I used to have a chart somewhere that recommended pipe size based on CID and horsepower. Can't seem to find it now. What I really want to know is what size the outlets on the stock manifold were designed to use. Aren't they pretty much made for a specific size? I'm looking at some used manifolds, but they don't come with the flanges that secure the pipe to the manifold. Is this a part an exhaust shop would have or be able to make? And wouldn't that piece also be made for a specific size pipe? Stock 231 manifolds I have look like they have a 1 7/8 outlet, maybe to be used with a 2" pipe? If the Dauntless manifolds are that way I would probably use 2" pipe all the way out. Which in turn means I'm looking for a muffler with 2" inlets and outlets.
     
  4. Oct 16, 2004
    dg69

    dg69 New Member

    left coast
    Joined:
    Sep 13, 2004
    Messages:
    23
    here's what the fsm has;

    [​IMG]
     
  5. Oct 17, 2004
    schardein

    schardein Low Range Therapy

    Success, MO
    Joined:
    Aug 11, 2003
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    Thanks DG, exactly what I was wanting. Geez, the FSM is literally 8 inches from my fingertips as I sit here at the computer.
     
  6. Oct 19, 2004
    willysworker

    willysworker Member

    Joined:
    Oct 12, 2003
    Messages:
    172
    I went with 1.75 i.d and ran them into a 2.25 i.d. turbo muffler(med. sz.) with single 2.25 out the back on drivers side next to shakle. It's a custom system with mandrel bent cruves.Nice sound but still suttle. Don't make the mistake of duals out the side, you'll tire of the noise in a short time.
     
  7. Oct 19, 2004
    schardein

    schardein Low Range Therapy

    Success, MO
    Joined:
    Aug 11, 2003
    Messages:
    553
    I have the fenderwell headers into glasspacks at the side. Some days I like it, but on the longer drives it gets annoying fast.
     

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