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Homemade Slingshot Intake

Discussion in 'The Hokey Ass Message Board' started by Grudge, Jul 20, 2008.

  1. Grudge
    Joined: Jun 26, 2008
    Posts: 436

    Grudge
    Member

    Thought I'd share my version of making a slingshot intake on the cheap. There was a great tech article a while back (can't find it now) that inspired me to make my own.

    Let me start by saying that I would much prefer having a real cast-aluminum dual-carb job, but money's a little tight right now. Besides, keeps me off the street:D

    I started with the flanges, making a template out of paper, and transferring the pattern into my solid modeling software so I could make a .dxf file for the laser cutter. Let me know if any of you would like a copy of the file. The tubing (1-1/4" mild steel, 1.8" radius mandrel bend) came from a highly recommended outfit here in Oregon called Columbia River Mandrel. Their website has tons of great stuff, the shipping was fast, can't say enough good things about it.

    [​IMG]

    [​IMG][​IMG][​IMG]I split the 180 degree pipes using a tubing cutter, and then ground the inside lip.

    [​IMG]

    [​IMG]

    Next, using the tooling marks from the bender, I taped cut lines on each pipe.

    [​IMG]

    [​IMG]

    Using my handy dandy chop saw, I was left with four individual pipes.

    [​IMG]

    Next I split the center tubes using my cutoff wheel.

    [​IMG]

    [​IMG]

    After much welding and grinding, it's starting to come together.

    [​IMG]

    And finally with the flanges on, and the glamour shot, with paint.

    [​IMG]

    [​IMG]
     
  2. Jay Rush
    Joined: Jan 3, 2007
    Posts: 508

    Jay Rush
    Member

    looks good man what kind of paint did you use on that
     
  3. Grudge
    Joined: Jun 26, 2008
    Posts: 436

    Grudge
    Member

    Thanks. It's Duplicolor cast-iron-color engine paint.
     
  4. adamabomb76
    Joined: Aug 5, 2007
    Posts: 280

    adamabomb76
    Member
    from York, Pa

    Sweet!! Now you even have the chunks of exhaust tubing left to throw in the road box incase you need a roadside rad. hose repair. Very nice intake man.
     
  5. btbsandman
    Joined: Mar 15, 2007
    Posts: 72

    btbsandman
    Member

    Fricking awsome...
     
  6. Jethro
    Joined: Mar 5, 2001
    Posts: 1,945

    Jethro
    ALLIANCE MEMBER

    Nice work!.... A different take on the slingshot, I like it too!
     
  7. speedtool
    Joined: Oct 15, 2005
    Posts: 2,541

    speedtool
    BANNED

    You're an awesome possum, man! Good work.
     
  8. strombergs97
    Joined: May 22, 2006
    Posts: 1,888

    strombergs97
    Member
    from California

    I like it..Great work..I'll take one. I have a single intake and two Stromberg 97s. I would like to build one..
    Duane.
     
  9. Carb-Otto
    Joined: Feb 12, 2006
    Posts: 332

    Carb-Otto
    Member
    from FINkLAND

    That looks good!
     
  10. Flat Ernie
    Joined: Jun 5, 2002
    Posts: 8,406

    Flat Ernie
    Tech Editor

    You might do well selling those flanges...I think there'd be a small niche market for them
     
  11. FEDER
    Joined: Jan 5, 2003
    Posts: 1,270

    FEDER
    Member

    Great Job!!!! That really looks cool!!
     
  12. Grudge
    Joined: Jun 26, 2008
    Posts: 436

    Grudge
    Member


    Hmmmm...What do you think, any takers out there? I can have some more made up.
     
  13. NortonG
    Joined: Dec 26, 2003
    Posts: 2,117

    NortonG
    Member Emeritus

    Looks good.
    Any pictures of it mounted on the engine?

    Norton
     
  14. great job man!!
     
  15. Nitrofan
    Joined: Dec 26, 2006
    Posts: 57

    Nitrofan
    Member
    from Kentucky

    That is some nice handy work!
     
  16. How does that compare price wise, bearing in mind that a cast Tardel slingshot is $65?
     
  17. Rusty Karz
    Joined: Feb 11, 2005
    Posts: 299

    Rusty Karz
    Member

    As someone said in another thread: "You are only limited by your imagination". Nice work.
     
  18. the-rodster
    Joined: Jul 2, 2003
    Posts: 6,959

    the-rodster
    Member

    Great work!

    But the cast piece is only $65, you gotta have close to that in the bends and flanges.

    Rich
     
  19. Grudge
    Joined: Jun 26, 2008
    Posts: 436

    Grudge
    Member

    You guys are right, the Tardel is a nice little manifold, especially for the price. I come in slightly under $60, but that's only because of my source for laser cutting.

    I can't make a case for doing this based on economics it's true. I seem to have this bad habit of not knowing any better:D

    I built this partly because of money (not having mutch) and partly to continue teaching myself how to fabricate cool stuff out of metal.

    Thanks for all the compliments guys, I appreciate it.
     
  20. Chebby belair
    Joined: Apr 17, 2006
    Posts: 854

    Chebby belair
    Member
    from Australia

    Great stuff, love the fab. Keep it up
     
  21. liljgoneman
    Joined: Dec 31, 2006
    Posts: 160

    liljgoneman
    BANNED

    will ya make one for a poly motor?......
     
  22. InjectorTim
    Joined: Oct 2, 2003
    Posts: 2,241

    InjectorTim
    Member

  23. Dago 88
    Joined: Mar 4, 2006
    Posts: 2,364

    Dago 88
    ALLIANCE MEMBER

    But, there is alot of pride in doing somthing like that yourself & I think that's what hotrodding is all about. Very nice work.:cool:
    Cheers Dago.
     
  24. I actually like the looks of this one BETTER then Tardels IMHO,,,plus the satisfaction of making it. Grudge, check your PMs please.
     
  25. FencePost
    Joined: Mar 5, 2001
    Posts: 351

    FencePost
    Member

    BINGO...no 1-800- intake here. GREAT job
     
  26. dickster27
    Joined: Feb 28, 2004
    Posts: 3,212

    dickster27
    Member
    from Texas

    Grudge, if you decide to market these you can put me on your list.
     
  27. AHotRod
    Joined: Jul 27, 2001
    Posts: 12,278

    AHotRod
    Member

    Very nicely done.
     
  28. plym49
    Joined: Aug 9, 2008
    Posts: 2,802

    plym49
    Member
    from Earth

    Why buy when you can build, create? That's what it is all about. Anyone can buy a part, you gotta respect someone who makes it (and who uses creativity for design and who repurposes something entirely different).

    Nice job, nice workmanship: this is really really nice.
     

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