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Thread: Drag pipe/headers

  1. #1
    Junior Member Just broke my cherry!
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    Drag pipe/headers

    Gents,

    Talking homemade straight pipes for Evo 80",
    this is a dumb question, but for the life of me I cannot remember the name of the part on the header/pipe that the flange presses against. The rounded steel doughnut/cup that fits into the block.

    I can flare the pipes myself, but the rounded, welded-on (insert name here) will give a better seal, I can tell.

  2. #2
    Senior Member Biker
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    Re: Drag pipe/headers

    You talking about these? Exhaust Flange

  3. #3
    Junior Member Just broke my cherry!
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    Re: Drag pipe/headers

    No, about the part that these are tightened agaiiiinst to hold the pipes on. Would also like some tips on flaring techniques, I have some redneck ideas, but am open to input

  4. #4
    HCG Technical Senior Member
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    Re: Drag pipe/headers

    never actually called it anything-, although spigot end would seem appropriate.

    depends on what size/diameter flare. for lengthy flares of large diameter you might try making a cone out of light gauge and then after tacking use a chop or band saw to cut true ends. small flare can be made with heat and old bearing cones from a brake lathe or anything that would give the shape.

    kind of a general question, but i do everything the "redneck" way....

    j

  5. #5
    Administrator Senior Member Wide's Avatar
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    Re: Drag pipe/headers

    You can do a flare the old fashioned way, stick he pipe in a drill press spin it and use a piece of hardwood to flare the end out. They call this "metal spinning" we have a few shops down here that still do it with tools 100+ years old. Very cool thing. Mooneyes is well know for using this method

    EDIT

    Just found this clip on it, you can use the technique to make a flare
    .-/c-.,_ /
    (_)'==(_)


    "parts left out cost nothing and create no service problems" Boss Kettering

  6. #6
    Junior Member Just broke my cherry!
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    Re: Drag pipe/headers

    Flare -that was the part I was thinking of, but I know some builder's use a weld-on unit, not really a flare. I think I'll do it up with a pipe shaper and call that good enough. Thanks for the replies.

  7. #7
    Senior Member Senior Member Horse's Avatar
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    Re: Drag pipe/headers

    Have you considered cutting of the flare/flange from an old set of stock hearers and welding it into a slightly larger od exhaust pipe?
    HCG-Pacific Northwest Group
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