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Exhaust manifolds

Discussion in 'Forced Induction' started by Ignorant import guy, Oct 4, 2007.

  1. Ignorant import guy

    Ignorant import guy Senior Member

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    What style exhuast manifold is the most reliable. Is it that "ram Horn" style, the tubular design, or the forged. I'm not building a straight drag car, just one to occasionally push 15 or so psi. Probably around 250whp.
     
  2. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    I don't think anyone makes a forged turbo manifold. That would be quite expensive... and very difficult since you have internal geometry to create.

    The large cast manifolds typically last the longest because they carry the most material and have no welds. They're made in one piece. They don't flow as well as balanced tubular manifolds, but for the power level you're looking at, it won't matter.
     
  3. Ignorant import guy

    Ignorant import guy Senior Member

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    ok thanks...sorry i meant to put cast not forged
     
  4. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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  5. Ignorant import guy

    Ignorant import guy Senior Member

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    where can I find something to block off the wastegate port in the manifold...I'm running an internal wastegate on my turbo and the only cast manifolds I can find have a flange for an external wastegate built in....I know I have seen the flanges or cover or whatever they are called but I can't find them
     
  6. Cashizslick

    Cashizslick !i!i!i!i!i!i!i!i!i!i!i!

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    Couldnt you just have something spot-welded over it? That may be your cheapest solution
     
  7. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Get a piece of plate steel from the hardware store (thick gauge), make a gasket, drill some holes, bolt it in place.
     
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