Boosting magnum exhaust manifold question.

Forced Induction Mopar

  1. maca

    maca Well-Known Member

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    Hey guys I've boosted a few Mopar engines but made log manifolds.
    I've seen a few guys reverse the factory manifolds around so they face forward. Can anyone tell me how they successfully joined the pipe to the factory manifolds without leaks. Welding a V-band to cast iron always runs the risk of cracking between the welds and the cast. I was thinking of machining the face flat on the cast and just using a plate to bolt straight up to it. Not sure if this will leak or not. Any help is appreciated cheers.

    IMG_20200115_202422.jpg
     
  2. ragtopfury

    ragtopfury Well-Known Member

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    Never messed with boost/turbos, but why not weld the factory type pipe end to the turbo piping and just bolt it to the manifold like it should be?
     
  3. Garrett Ellison

    Garrett Ellison Amateur driver on public roadway, do not imitate.. FABO Gold Member

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    Have a plate cut from 3/8 T-304 or the like. Have the center bored to a near interference fit with the manifold spigot and drill in two bolt holes to correspond to the manifold flange. If you've got V-band flange mount turbos already, have your male exhaust flanges welded to the plate. Or you can go with a four bolt flange style turbo mount on the plate, too.
     
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    • subcom

      subcom Well-Known Member

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      I welded vbands to mine but now prefer the factory ball and socket type flanges that Walker makes. They are easy to bolt up and do not leak.
       
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      • voodoo340

        voodoo340 Active Member

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        I think this is what subcom is talking about, from Walker: 20200115_145123.jpg
        IMG_2761.jpg

        I will likely use those for mine too, unless I have the muffler shop flare my ends and use a thick flange, like Dizuster did below:
        IMG_1754.jpg
         
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        • ragtopfury

          ragtopfury Well-Known Member

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          Pretty much answers what I was asking in post #2.
           
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          • dusted

            dusted FABO Gold Member FABO Gold Member

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            I used stock magnum manifolds and the factory pipe flanges. No leaks and offers some movement.
             
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