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  1. #1
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    Video of twin 7 Marine 557's running on a 38 Fountain CC



    Taken from post on THT.

    "Just rode the 38 Fountain with twin 7's at the Miami Show......video coming later. Hooked up much better than last year, cruised around 40-60. Only took it to 60mph.....but at only 4200rpm's she had plenty left. The exhaust sound is now adjustable since people complained it was too quiet. So now the owner can adjust the exhaust baffles to be quiet or loud. Eric the VP of 7 Marine was very gracious and answered all questions. Said they only been at this for 3 years and have made great progress in the last year.

    video added to this first post......gets up on plane from idle at around 1:55. More than 7 minutes of running time on iphone.....are the complainers still going to complain the motor doesnt exist or run?....of course they will."
    13' Biel tunnel AKA "Flight Risk"
    13" Modified Yamaha V4 - 101 mph

    21' Paramount
    Mercury 300 Promax

  2. #2
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    More 7 Marine pics
    Click image for larger version. 

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ID:	272325
    13' Biel tunnel AKA "Flight Risk"
    13" Modified Yamaha V4 - 101 mph

    21' Paramount
    Mercury 300 Promax

  3. #3
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    4200 at 60! That is equivalent to my 34 at 4k.

    What do they turn?
    Quartershot T-3R 15" 3.5L E-Tec 1.62 Sportmaster


  4. #4
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    Man those sound good!

  5. #5
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    Quote Originally Posted by Capt.Insane-o View Post
    Man those sound good!
    Not really Scream and fly, more like Howl and Haul Ass.
    13' Biel tunnel AKA "Flight Risk"
    13" Modified Yamaha V4 - 101 mph

    21' Paramount
    Mercury 300 Promax

  6. #6
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    They sound like a combination of a gear whine and V-8.Sounds good to me.
    Industry rumor is they went from 20pc lots to 50pc lots the middle of last year.
    L.T.


  7. #7
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    They look and sound very cool for one BIG big motor!

  8. #8
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    Almost does look like a mercury gear case and leg under all that plastic from that picbut I have not seen one with my own eyes yet so


    03 j17 skiff 40hp
    79 action 17 2.4
    79 15 viper (sold)
    85 22 velocity 225efi(sold)
    82 31 sea ray

  9. #9
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    Quote Originally Posted by tux974 View Post
    They look and sound very cool for one BIG big motor!
    They actually have a better horsepower to weight ratio than any of the other big motors. Not something that will go on an STV but twins replace triples and triples replace quads. I would love to see some medium to big offshore sport boats powered with them. A good sized cat would probably float them well.
    13' Biel tunnel AKA "Flight Risk"
    13" Modified Yamaha V4 - 101 mph

    21' Paramount
    Mercury 300 Promax

  10. #10
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    At 1:57, it got puffy.

  11. #11
    Join Date
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    American creativity at it's finest.
    Love it!
    I'd rather be competitive w/junk I built in my garage than win w/stuff I bought.


    I refuse to allow common sense to interfere w/my boat buying decisions.


    Checkmate 16' 140 Johnson
    Hydrostream 17' Vector FrankenRude I
    Laser 480 (?) 21' w/GT 200
    Glastron Carlson Conquest w/XP 2.6
    Glastron Carlson CVX 20 w/XP 2.6
    24' Sonic w/twin 250 Johnsons
    24' Sonic w/twin 250 HO Johnsons
    19' STV River Rocket w/FrankenRude II
    Allison XR 2002 w/Frankenrude II
    Hydrostream 18' V-King w/Frankenrude II

  12. #12
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    Have they said what the actual propshaft hp is?
    Fellow G-Man of the Sunshine Syndicate-Dixie Wrecked Chaptor..
    We Put The F. U. in FUN
    94 17MA Maverick 115 Yamaha
    2006 Mustang GT, with a belt driven air cleaner

  13. #13
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    #2 iron from the Mayo clinic, Fla. / Blue Ridge, VA.
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    Quote Originally Posted by slowaction420 View Post
    Almost does look like a mercury gear case and leg under all that plastic from that picbut I have not seen one with my own eyes yet so
    I seem to remember something they were working with ZF marine gear people, from a coupla yrs ago
    most overnite successes usually take at least 10 years


    Certified turd polisher,

  14. #14
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    Cool stuff. Lot of gear whine though. I wonder how reliable they'll be in the rough stuff?

  15. #15
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    Most of the whine you're hearing is the tranny, same sound an inboard skiboat makes. The gearcase itself doesn't shift...
    Mike Dowling

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