southwind v bottom jet t deck
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southwind v bottom jet t deck

  1. #1
    Senior Member redlightrobert's Avatar
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    Default southwind v bottom jet t deck

    just bought one of these, any problems? berk jet, i have bout 800 horse, has spot for drop yhru fin about 20 inches front of intake. speed limitations?
    BOOBS; once you have seen one, you want to see em' all!

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    Senior Member jyeager's Avatar
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    my regular deck southwind runs about 78 with 450hp 460 ford and A impeller. with 800hp you'll run in the 100's

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    Senior Member Futs's Avatar
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    Quote Originally Posted by jyeager View Post
    my regular deck southwind runs about 78 with 450hp 460 ford and A impeller. with 800hp you'll run in the 100's
    maybe not in the 100's but upper 90's if done right. I sure wouldnt push it that far myself..

    Post up a pic of the boat. What year is it?

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    I'm No Expert Shaun's Avatar
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    800 HP your probably at or beyond the hulls limits. It depends on whats been done to it and how well it's handling with those modifications. All you can do is slap what you got into it, run it up to speed slowly and see what it wants to do. Nobody on here is gong to be able to tell you what that hull will do because none of us know whats been done to it.

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    Senior Member papaletch4130's Avatar
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    My buddys uncles ran over 100. Not a t deck but still a v bottom.
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    Senior Member XClutchboy725's Avatar
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    I just put 800hp to mine and now I'm dealing with the infamous Southwind porpoise!

    Need to spend some time dialing in the hardware now.

  9. #7
    Senior Member Futs's Avatar
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    Quote Originally Posted by XClutchboy725 View Post
    I just put 800hp to mine and now I'm dealing with the infamous Southwind porpoise!

    Need to spend some time dialing in the hardware now.
    You have a shoe and ride plate? When does it porpose? full out or what?

  10. #8
    Senior Member XClutchboy725's Avatar
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    Hey Futs!

    Yes - one of Jack's shoe and ride plate set-ups is on the boat. Standard cut shoe 2 degress up on ride plate right now.

    I think I need to loose the droop and go from there.

    Starts to porpose in the 70's. Boat went 84 on GPS with 4 people in it...bouncing!

    Appreciate the help!

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    Senior Member XClutchboy725's Avatar
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    Here's an old pic with old power and no droop at all. I think I need to get back to this set!!!

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  12. #10
    www.highflowdynamics.com LakesOnly's Avatar
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    Quote Originally Posted by redlightrobert View Post
    just bought one of these, any problems? berk jet, i have bout 800 horse, has spot for drop yhru fin about 20 inches front of intake. speed limitations?
    The Southwind 18 is probably the most copied/splashed jet boat hull bottom ever, and with good reason: they are great handling boats. Shoemaker once surmised to me that of the 50-or-so SW 18's laid up annually, perhaps just a handful of them (maybe 10) became T-Decks. Futs?

    I own a Southwind F1 T-Deck myself and couldn't be happier with it. About 550 hp and goes 85+ mph without a shoe or rideplate. Has full-length TD stringers in it, too.

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    This post © Copyright 2007-2020 Paul Kane. No copying, linking, printing or otherwise without express written permission.

  13. #11
    www.highflowdynamics.com LakesOnly's Avatar
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    Quote Originally Posted by XClutchboy725 View Post
    I just put 800hp to mine and now I'm dealing with the infamous Southwind porpoise!

    Need to spend some time dialing in the hardware now.
    Porpoising is not strictly a Southwind problem but a general boat setup problem. Sounds like your boat was sorted and then you significantly upped the HP, therby altering your setup and further dictating the need for setup adjustments.

    Jack McClure once said to me that he was working on a setup for a boat very much like my boat (see above post) added a shoe and ride plate and the boats top speed jumped from 85 to 91 mph but was now proposing wildly. Added trim tabs to the boat and the hull stabilized/took a firm set and speed jumped again to 96 mph. Trim tabs are just one way to reduce porpoising; you might also play with nozzle angle and lower the nose of the boat down but that might scrub speed, other ways as well, etc.

    LO
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    This post © Copyright 2007-2020 Paul Kane. No copying, linking, printing or otherwise without express written permission.

  14. #12
    Senior Member Futs's Avatar
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    Quote Originally Posted by XClutchboy725 View Post
    Here's an old pic with old power and no droop at all. I think I need to get back to this set!!!

    Name:  Boat Rooster.jpg
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    Sounds to me like your getting to much lift and it wont carry it with the current set up. Ditch the droop and see what happens. Its a whole new ball game now with the new power. You will get a handle on it.

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    Senior Member XClutchboy725's Avatar
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    Thanks guys! You are both confirming my thoughts...

    Sorry for the hi-jack. Back to your regularly scheduled program.

  16. #14
    Senior Member Futs's Avatar
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    Quote Originally Posted by LakesOnly View Post
    The Southwind 18 is probably the most copied/splashed jet boat hull bottom ever, and with good reason: they are great handling boats. Shoemaker once surmised to me that of the 50-or-so SW 18's laid up annually, perhaps just a handful of them (maybe 10) became T-Decks. Futs?

    I own a Southwind F1 T-Deck myself and couldn't be happier with it. About 550 hp and goes 85+ mph without a shoe or rideplate. Has full-length TD stringers in it, too.

    LO
    There wasnt that many F1 T decks made, i dont have a good number to throw out there. It was my favorite boat at the time, until the dragster came about.

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