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  1. #1
    excess's Avatar
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    Dead space in manifold after external intercooler

    I was curious about what affect or better said the improvement we could get with the dead space where the original intercooler went in the intake manifold. I can only assume that all that open space might not be as efficient as just straight runners. Do you guys think the dead space has an affect on performance.


  2. #2
    EZ Dock of Long Island Shibby1485's Avatar
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    oh yeaaaaaaaaaa... i LOVE this topic. light the pilots, get some ideas going. there's been talking about this for over a year.... i'd love a custom manifold with runners with no hallow cylinder space.

  3. #3

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    I've always wandered about this myself. Has anyone ever tried the '03 GTX SC intake on an RXT or RXP it didn't have the intercooler so it won't have this void.

  4. #4
    Short runners no plenum = high RPM power

    Long runners plenum = low end torque

    tuned runners with plenum = bottom end, midrange, and top end

    everything is relative, cam timing, head work, volume, intake velocity, exhaust velocity, etc... PR...

    * there is a dif between wet manifolds and dry manifolds engineering, you still have to keep the flow/pulses moving...something like that...

  5. #5
    Quote Originally Posted by Rocketman
    I've always wandered about this myself. Has anyone ever tried the '03 GTX SC intake on an RXT or RXP it didn't have the intercooler so it won't have this void.
    I believe the flame arrestor screen is in that space on the 2004 gtx`s.
    are the cams the same for 03 and 04?...PR...

  6. #6
    Red Devil's Avatar
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    Quote Originally Posted by Pale Rider
    I believe the flame arrestor screen is in that space on the 2004 gtx`s.
    Yes it is Andy, it looks like a long air filter. I cut the cap off my manifold and removed it prior to dropping my motor back in. Nils suggested that I do this.

  7. #7
    Gforce's Avatar
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    Now were talking I thought about this once I removed my stock IC. All that open space cant be giving optimal flow.

  8. #8
    what about dual throttle bodys on each end of the manifold.

  9. #9
    I'm still wondering what that race guy had on his blockoff plate that had the wires going to it

  10. #10
    EZ Dock of Long Island Shibby1485's Avatar
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    Quote Originally Posted by beachboy66
    what about dual throttle bodys on each end of the manifold.
    tripple carbs sounds better

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