[Question] the "DUCT"
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the "DUCT"

  1. #1
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    Default the "DUCT"

    What ever happened to this? seems it was just put on a shelf somewhere...

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    Highaboosta Unchained's Avatar
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    Quote Originally Posted by hornetsnest454 View Post
    seems it was just put on a shelf somewhere...
    True, there are several sitting on the shelf across the country.

    Anyone who ever used it had positive feedback. There never was any negative feedback.

    Twin Turbo 1800 HP V-Drive lake boat

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    Quote Originally Posted by Trigger View Post
    No one cares about your buddies old antiquated garden hose technology.
    Quote Originally Posted by MAXIMUS View Post
    I think I could run more boost but it's a real hand full right now

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    Senior Member Hass828's Avatar
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    Quote Originally Posted by Unchained View Post
    True, there are several sitting on the shelf across the country.

    Anyone who ever used it had positive feedback. There never was any negative feedback.
    I will second that! My boat was quicker/faster with the duct than it was with the stock bottom that came on the boat(even though it was ordered from CA with the race keel/bottom). BUT,it is much better with the bottom I have on it now than what the duct was doing, although I will say that the shutdown is not nearly as safe as it was with the duct, which is really what he designed it for in the first place, AND I still haven't tried it with the new bottom. I suspect that I would see a gain.
    If someone has a boat that they would like to try this on I would be willing to send it. I'm sure Mark would be OK with it.
    Last edited by Hass828; 12-10-2013 at 01:32 PM.
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  6. #4
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    Default

    What's the duct?

  7. #5
    Highaboosta Unchained's Avatar
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    Pics of the "Duct"

    That name was first coined by "LVjetboy" (sp ?) back in about 2004.

    This must have been one of the first ones as it didn't even have flathead screws
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    Last edited by Unchained; 08-11-2013 at 08:33 AM.

    Twin Turbo 1800 HP V-Drive lake boat

    http://s621.photobucket.com/albums/t...t=MAH05771.mp4

    Quote Originally Posted by Trigger View Post
    No one cares about your buddies old antiquated garden hose technology.
    Quote Originally Posted by MAXIMUS View Post
    I think I could run more boost but it's a real hand full right now

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    Trippy. Did that thing work?

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    Quote Originally Posted by southwind74 View Post
    Trippy. Did that thing work?

    Something like that has never been tested on a track or anything capable of collecting data, so the results are merely a seat of the pants. So it must haul ass. LOL

  10. #8
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    Quote Originally Posted by RiverTurtle View Post
    Something like that has never been tested on a track or anything capable of collecting data, so the results are merely a seat of the pants. So it must haul ass. LOL
    That's correct.

    Similar to when I posted up my turbo assembly 10 years ago and stated that these turbo's really make some incredible HP and TQ with no track times or data to back it up.
    I heard every possible reason why that can't work in a boat, for years.
    Years later a select few decided to ignore the masses and plow ahead with a turbo program on a drag boat. They've made a pretty impressive show.

    You would fit right in with the, "every possible reason why that can't work" group.

    Twin Turbo 1800 HP V-Drive lake boat

    http://s621.photobucket.com/albums/t...t=MAH05771.mp4

    Quote Originally Posted by Trigger View Post
    No one cares about your buddies old antiquated garden hose technology.
    Quote Originally Posted by MAXIMUS View Post
    I think I could run more boost but it's a real hand full right now

  11. #9
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    Sorry guys, it has been tested at the track ! We ran it this weekend on HIGHNOON and qualified # 1 in QE with it. Along with those turbos ! Sorry but we will not post pics of our hardware.

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    Quote Originally Posted by bob fry View Post
    Sorry guys, it has been tested at the track ! We ran it this weekend on HIGHNOON and qualified # 1 in QE with it. Along with those turbos ! Sorry but we will not post pics of our hardware.

    oh come on... a couple of " spy photos" would be great. Do you mount the duct (bottom of it) at the same angle as the keel ?

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  14. #12
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    Dan Hercules has one that he never mounted on.
    Any West coaster could get that one and bolt it on.
    The bolt pattern is specific to the intake although it could be redrilled if necessary.
    It's pretty easy to install.

    I always wanted to see it run on a heavy hull that couldn't get itself up out of the water.
    I think that is where a big potential benefit was.
    The bottom of the duct replaces the lost planing surface from the pump intake.

    I've sent a few out to those who were anxious to try it,
    I fabricated it and sent it out and they never followed through.

    Twin Turbo 1800 HP V-Drive lake boat

    http://s621.photobucket.com/albums/t...t=MAH05771.mp4

    Quote Originally Posted by Trigger View Post
    No one cares about your buddies old antiquated garden hose technology.
    Quote Originally Posted by MAXIMUS View Post
    I think I could run more boost but it's a real hand full right now

  15. #13
    Boss of the McIntyre Mob danhercules's Avatar
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    My intake needs to be reset. When I re-set it, I would like to try it on my deckboat.


    Very first TPR 21' Deck. 528 BBF 736hp on pump gas built by High Flow Dynamics

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  16. #14
    Senior Member TNYoungblood's Avatar
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    Quote Originally Posted by bob fry View Post
    Sorry guys, it has been tested at the track ! We ran it this weekend on HIGHNOON and qualified # 1 in QE with it. Along with those turbos ! Sorry but we will not post pics of our hardware.



    Have you ran back to back passes with and without ?? What was the outcome
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