Register now to get rid of these ads!

Homemade intake manifold. Aybody done it?

Discussion in 'The Hokey Ass Message Board' started by 34Hupmobile, Nov 12, 2004.

  1. A lot of things I don't understand. One of them is why shouldn't or couldn't I build an intake for my L6 myself. Is there any specific reason it would have to be cast? Why couldn't I make one out of plate steel?
     
  2. seymour
    Joined: Jan 22, 2004
    Posts: 5,125

    seymour
    Member
    from PNW

    theres no reason you couldn't. i've modified some of my stock ones before.
     
  3. Mike Rouse
    Joined: Aug 12, 2004
    Posts: 345

    Mike Rouse
    Member

    No reason why you could not make an intake manifold.
    3/8" flanges on the head and 16 ga sheetmetal all brazed together would work great, could even be made odd looking.
    Use tubes and rectangular tube too.
    I think brazing would be best as it would cause the least amount of distortion. You could jig it up on the head and braze away after first tack brazing all the pieces. The flux coated bronze rods are low cost and an oxy acet torch are the major players.
    Mike Rouse
     
  4. porknbeaner
    Joined: Sep 12, 2003
    Posts: 41,007

    porknbeaner
    Member

    Piece a cake. You can build a log type with exhaust pipe and a log plenum. Or you can make a simple plenum box for your carb if you're building it for a single carb.
    I'd probably wire weld it myself, but I've brazed 'em when all I had was a torch.
    Sheep metal/tubeing intakes have been around forever. I think they cast me because its easier to mass produce and keep 'em all the same.
     
    Register now to get rid of these ads!

  5. Slag Kustom
    Joined: May 10, 2004
    Posts: 4,312

    Slag Kustom
    Member

    build it on the head weld everything nice before you remove it and have the flange surfaced and there will be no problems. I have made some for harleys and have them hpc coated when im done to give a nice look to them.
     
  6. Mutt
    Joined: Feb 6, 2003
    Posts: 3,219

    Mutt
    Member

  7. laverda
    Joined: Feb 18, 2003
    Posts: 292

    laverda
    Member

    From an old HAMB post ...... for a hemi but you get the idea (apologies to the dial ups) [​IMG]

    1
    [​IMG]

    2
    [​IMG]

    3
    [​IMG]

    4
    [​IMG]

    later,
    papa al
     
  8. whizzerick
    Joined: Nov 13, 2002
    Posts: 1,109

    whizzerick
    Member

    The Vaporizer!

    [​IMG]
     
  9. Jonnyhotrod
    Joined: Jul 27, 2003
    Posts: 430

    Jonnyhotrod
    Member

    Laverda,

    Could you repost that Post... Only pic 2 came out. It looks like a sweet article, and a fun project. Thanks. Or PM me and you could email it, if you would be so kind. Thanks.

    Jonnyhotrod
     
  10. Special Ed GT
    Joined: Jun 21, 2004
    Posts: 287

    Special Ed GT
    Member
    from Denver-ish

    [ QUOTE ]


    [​IMG]



    [/ QUOTE ]

    "Ordinarily a multi-carb V-8 manifold sets you back $75 or more"

    They got that right! [​IMG]
     
  11. Jonnyhotrod
    Joined: Jul 27, 2003
    Posts: 430

    Jonnyhotrod
    Member

    Would love to see some old U-Fab plans/instructions if anyone's got 'em....

    Jonny
     
  12. AV8Paul
    Joined: Mar 2, 2003
    Posts: 1,813

    AV8Paul
    Member Emeritus

    A friend of mine is putting a 308 Hudson six in a '29 Essex roadster. He's making his own intake and modifying a jeep header sys for this engine.
     

    Attached Files:

  13. AV8Paul
    Joined: Mar 2, 2003
    Posts: 1,813

    AV8Paul
    Member Emeritus

    headers
     

    Attached Files:

  14. AV8Paul
    Joined: Mar 2, 2003
    Posts: 1,813

    AV8Paul
    Member Emeritus

    Here's the factory relief on the Hudson 308 flathead.
     

    Attached Files:

  15. sodbuster
    Joined: Oct 15, 2001
    Posts: 4,942

    sodbuster
    Member
    from Kansas

    Harlan/Spank made a 3/2 a couple of years ago out of square tubing and flat steel and alot of guys mentioned that it would not work. But he did it and I saw him this past summer on the salt with the intake still there. I mentioned it to him about the intake and he just shrugged it off. I have a pix that I can post in the next couple of days.

    Chris Nelson
    Kansas
     
  16. Here's one a friend made for his hemi back in the day. Flat steel and square tube, just like the one Sodbuster mentioned. Duane has been running this one since 1957.
     

    Attached Files:

  17. dehudso
    Joined: Sep 25, 2003
    Posts: 545

    dehudso
    Member

    bitchin hudson pics there. Have him relieve that thing to the head gasket, and it should fly. Any more pics?
     
  18. DollaBill
    Joined: Dec 23, 2003
    Posts: 372

    DollaBill
    Member

    A bit OT, but Hogan does it everyday...

    [​IMG]
     
  19. nero
    Joined: Jan 2, 2002
    Posts: 205

    nero
    Member

    in the old days they sold u weld em log manifold kits..maybe som one should start making them ? every one today has a mig..
     
  20. Reverand Greg
    Joined: Oct 18, 2007
    Posts: 199

    Reverand Greg
    Member

    you can use aluminum and do anything you want sidedrafts four barrels anything,import kids do it alll the time
     
  21. Pontiac Slim
    Joined: Jan 16, 2003
    Posts: 1,188

    Pontiac Slim
    Member Emeritus

    Hey..
    I made a t-ram for the 455 thats in the A COUPE.. NOT THAT HARD BUT DO WELDING WHEN INTAKE IS BOLTED ON DUMMY SET UP.
    PONTIAC SLIM
     

    Attached Files:

  22. Stone
    Joined: Nov 24, 2003
    Posts: 2,279

    Stone
    Member

    Great post. I was looking for info on Crower U-Fab intakes from the old days and came across some threads that linked this one. Cool ideas
     
  23. Here's mine.....again. :)

    Weber side-draft on an Iron Duke.
     

    Attached Files:

  24. Moloko
    Joined: Dec 14, 2005
    Posts: 726

    Moloko
    Member

    I'm planning on making one this winter.

    Here is the one my friend just got for his race DSM. Has velocity stacks inside :eek:

    [​IMG]
     
  25. Twisted6
    Joined: May 27, 2007
    Posts: 490

    Twisted6
    Member

    I am remaking the tunnle ram intake out of alum right now.The first one was made of sheet metal and so was the flat 3x2 intake.The Tunnle ram intake was built for my 3x4 (450 holleys) Building them was not hard to do,Just take your time and Use a head as a jig when your ready to start welding it up.It will help a Great deal to keep it straight.
     

    Attached Files:

  26. Flatdog
    Joined: Jan 31, 2003
    Posts: 1,285

    Flatdog
    Member Emeritus

    How the men do it.No not me flat 32 sometimes on hamb did this, also did own heads.
     

    Attached Files:

  27. budd
    Joined: Oct 31, 2006
    Posts: 3,479

    budd
    Member

    boy thats nice, alot of work, have any pics of the head tooling? anymore info around on this job?
     
  28. Yup... When no one makes a manifold for your engine, because it isn't a HONDA...

    Here is Mine...
    Started with some 0.75" 6061 T-6 plate and a Intake gasket.
    [​IMG]

    [​IMG]

    Ended up with this... After a few math calculations for length of the runners and such...

    [​IMG]

    [​IMG]
     
  29. Flatdog
    Joined: Jan 31, 2003
    Posts: 1,285

    Flatdog
    Member Emeritus

    Here are some pics of a stub manifold that my kid fabbed up for me .Not bad for a 19 year old.
     

    Attached Files:

  30. Flatdog, that is a slick set-up...

    Your boy must have had a good teacher
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2020 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.