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  1. #1
    EZ Dock of Long Island Shibby1485's Avatar
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    Manifold Stock Intercooler Hollow Space Brainstorming...

    so when you remove the intercooler, there's a helluva lot of empty space in the intake manifold... kinda hard to maintain alot of pressure with all that empty space? At least this is what i've gathered from multiple discussions about this topic, and supposedly PPG? was coming out with a billet intercooler filler cylinder?

    Is it as simple as my drawing? just taking a solid chunk of aluminum, lathing it down to right diameter cylinder, and cutting ports into the cylinder for air to go directly thru manifold into each cylinder?

    Any positive scientific engineering facts proving this will work or have a positive effect?

    or did i completely miss the boat and mis-understand what needs to be done? I don't think it's hard to give a buddy at a machine shop a call to make a proto-type, and if successful he'll have a product to make and sell.
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  2. #2
    Site Admin Green Hulk's Avatar
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    You are on the right track, but no holes in the cylinder

  3. #3
    EZ Dock of Long Island Shibby1485's Avatar
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    so when the stock intercooler was in the manifold... didn't air flow inbetween all the intercooler components and into the intake ports into the motor?

    or when u remove the stock intercooler air no longer flows thru there at all? why would you want a solid chunk cylinder... what's the route of the air between the external IC and the motor?

    IF this would work, i'm surprised it's not more widely pursued, seems like a simple job to me

  4. #4
    Site Admin Green Hulk's Avatar
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    Yes, it flowed thru the coils then up into the intake runner.

    With the solid cylinder it would fill that void and air would flow around the cylinder then up into the intake runner.

  5. #5
    EZ Dock of Long Island Shibby1485's Avatar
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    OOOOOOOOO

    between that explanation, and i was just flipping thru the shop manual looking at diagrams it makes perfect sense to me now. Have a solid cylinder in there, it would give the air less chance to scramble around in the void. The less time the air hangs out in the manifold, the coolr it stays. the less volume the manifold has for air volume, the more dense it can keep the air packed and pressurized.

    i think i'm catching on...

  6. #6
    Site Admin Green Hulk's Avatar
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    you are on the right track young grasshopper!

  7. #7
    David 1 FAST VE's Avatar
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    The pic I saw was a round cylinder that was rounded on the front.
    It was also hollow pipe I thought to keep the weight down.

    I heard there was a lot of mass to be attached only on one end so they ended up with the hollow pipe???

  8. #8

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    What about the internals on the gtx sc without the intercooler?
    It appears to have a plastic insert?

  9. #9
    EZ Dock of Long Island Shibby1485's Avatar
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    i was wondering that too.... the GTX SC manifold has a plastic molded cap in the manifold where an intercooler would normally go... that one is all hollow too? Are all these machines whether Intercooled or not losing performance from the large volume in the manifold?

    JERRY... didn't you post a picture from havasu of a ski that cut the manifold up and eliminated that hollow spot and ran their air intake from the SC and routed it inbetween the manifold and the motor up to the front of the ski? How did that ski perform and what else was on it?

  10. #10
    the gtx has a tubular mesh flame arrestor in the manifold. in the rxp the intercooler acts as a flame arrestor.

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