Check out my custom intake manifold

Discussion in 'That'll Buff Right Out' started by 505, Jul 19, 2008.

  1. 505

    505 New Member

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    Check out my custom intake manifold (MSP)

    Been working on this thing for a while now, finally almost done with it.

    Pics first...

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    And here is the plenum floor plate / velocity stacks:

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    Car is a Mazdaspeed Protege with a .86 GT28RS. Nobody makes an intake manifold for us, so I decided to give it a shot. Still need to put the fuel rail mounts on it, but other than that it is ready. We'll see what kind of power it actually makes later this week.

    OT's thoughts?
     
    Last edited: Jul 19, 2008
  2. lancer

    lancer OT Supporter

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    danger to manifold
     
  3. Mr3GTP

    Mr3GTP OT Supporter

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    Looks pretty good. Keep us posted.
     
  4. nice carpet. you live inside a mini golf course?
     
  5. hahahaha :bowdown:
     
  6. 505

    505 New Member

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    Shit, should have used only one bottle.

    Haha, pretty much.
     
  7. PanzerAce

    PanzerAce Active Member

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    I hope you flow tested it on a computer :hsd:
     
  8. LinuxRacr

    LinuxRacr New Member

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    That manifold came along very nicely... Can't wait to actually see it mounted in the engine bay.
     
  9. LinuxRacr

    LinuxRacr New Member

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    You should see his backyard...
     
  10. 505

    505 New Member

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    Had a buddy do it for me. :wiggle: Back and forth about throwing it on a bench vs a stock one... would be cool to have the numbers, but I already know it outflows our pos stocker by a long shot.

    Soon. You gonna pick one up for the papa smurf? :)

    :nono: It's not ready for OT.
     
  11. PanzerAce

    PanzerAce Active Member

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    :h5: Mostly I'm thinking though to make sure you are getting equal amounts of air into all cylinders so that you aren't running lean/rich on some of them. Watching custom manis being designed and built is pretty cool.
     
  12. 505

    505 New Member

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    Yeah that is one of the things I am watching for with the testing. I'm not going to set up a WBo2 per cylinder, so I'll just have to trust the computer design stuff and keep checking the plugs for awhile. Ghetto I know, but I aint as ballin as some of the other folks around here. :sadwavey:



    Oh and I finally installed it last week. Need to make a few minor tweaks to the brackets and vac ports, but all of the essentials worked good.

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    The car pulls harder and harder all the way to redline instead of just tapering off at the 4500ish rpm point. Makes me wish I could spin it higher than the current 6500 redline.

    We'll see what she does on the dyno, but I am pretty stoked with it so far.
     
  13. LinuxRacr

    LinuxRacr New Member

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    I should have been a tester for this.. :( Looks awesome.
     
  14. The1Ash10

    The1Ash10 Active Member

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    :bowdown: Nice work! I can't wait to see what type of numbers it puts up.
     
  15. 505

    505 New Member

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    Well I tested that proto over the past 5 months, and have nothing bad to say about it. Plugs still look evenly colored, so I'm gonna have to declare that the flow modeling worked good. Dyno numbers finally coming next week on a MSP with built motor, SC61, Haltech. Boost will be 15-16, redline 7250. I will post up the charts.

    Here are some pics of the revised piece.

    Or not...
    1. You are not allowed to post links or images to other sites.
    Fucking gay.
     
  16. PanzerAce

    PanzerAce Active Member

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    rehost on uploader.ws :o



    I just realized I had a solution to the not wanting to use a WBO2 per cylinder, and that's that you could have used a set of digital EGT sensors from an aircraft engine. That would have shown you any serious problems, but I guess that doesn't matter since the plugs are showing normal wear.
     
  17. trayfoe

    trayfoe I tongue female asshole PM me for details.....

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    nice job
     
  18. LinuxRacr

    LinuxRacr New Member

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  19. Bzevey

    Bzevey New Member

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    Nice work Would like to do something similar for my car except since na longer runners
    but may go turbo idk
     
  20. Contract

    Contract Guest

    That looks pretty cool, nice work.
     
  21. ForevererZero89

    ForevererZero89 New Member

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    i want one!!!! wish i had the $$$
     
  22. Mr3GTP

    Mr3GTP OT Supporter

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    Glad to hear it worked well. Would like to see dyno graph vs stock.

    It's been over half a year; updates would be nice. :x:
     
  23. Boosted98gsx

    Boosted98gsx Active Member

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    Okay, from an engineering standpoint, lemme bust some bubbles here

    1) Box plenums will eventually flex into broken welds due to aluminum's poor shear stress resilience. You may get a couple years out of it, but eventually, the material around the welds will weaken, and crack due to the flexing (internal shear force) in the plenum walls.

    The best IM design (from sheetmetal) is a pressure vessel with welds ONLY being in areas where tensile stress will occur. This is Al's best force resistance.

    2) Raised velocity stacks will increase turblence of airflow as it tries to reach the farthest cylinder

    3) Tapered plenum ceilings (or decreasing cross sectional area) is a BAD idea on forced induction. It has been proven via flowbench to decrease airflow in the cylinder farthest from the TB, due to the loss of volume above the runner.

    4) You SHOULD have used tapered runners. They increase velocity of the airflow as it enters the cylinder, increasing fuel atomization, and airflow into the combustion chamber.

    Here is a properly designed forced induction SMIM.

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  24. TRN

    TRN Well-Known Member

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    That was the first thing I noticed too. :rofl:
     
  25. LinuxRacr

    LinuxRacr New Member

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    He actually does have a min golf course turf out back.
     

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