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  1. #1
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    Stock 225 promax takes Hydrostream YT +100 MPH

    Last year a stock '81 Johnson 235 took my '86 Valero YT to 93 MPH. I've since rigged it with an original '97 225 promax with a sporty (1.75 gears). We took it out for the second run with this motor this past weekend and loaded it up with 80L of fuel and gear to go fishing for the day. Running a stock 32" lightning ET she went 96 MPH with two of us and 103 MPH solo on the limiter!!!! Wow what a rush!

    I'm thrilled with how this thing is running and never EVER thought the 55 MPH, running on 5 cylinders, rotted boat I bought 3 years ago would ever go this fast. This is just too much fun!

    Click image for larger version. 

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    1986 Hydrostream Valero YT - Fully restored '12.
    1997 225 Promax.

  2. #2
    Join Date
    Jun 2003
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    Sarasota, FL
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    That's awesome man!!

    Where did you get the gauge with hydrostream printed on the face?
    Rob Lankford

    1988 20' Action Marine/1991 Mercury 2.5 7 Pedal 200+ H.P

    Previous owned boats worth mentioning

    1976 17' Action Marine 2.4 200
    1984 20' Action Marine 2.5 200
    1983 17' Hydrostream V-King 2.4 Bridgeport
    2003 LPB STV RR COPY 2.5 280 /300 Drag
    2004 LPB STV RR COPY 2.5 280
    2005 Baja 23 Outlaw 6.2 Mercruiser
    2006 FTP Quarter Shot T3 Race 2.5 200 CARB/2.5 225 PROMAX
    2009 FTP Quarter Shot T3 Race 2.5 280




  3. #3
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    Lehighton, Pa.
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    Cool!!!

    A 2.5L 225 PM sporty with 1.75 gears?? I thought they were 1.87?
    2013 Allison XB 21 BasSport Pro
    2012 Mercury Racing 250 Sport XS 1.75 gears
    Robbie Patterson Bravo 1 30P
    Hydromotive QIV-XOB 30P

  4. #4
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    The gauges are from SpeedHut.com
    They have excellent customer service and great pricing. Every gauge is custom spec'd using their neat online tool where you get to visually design the gauge. They can also make them to suit basically any design.

    In regards to the sporty I'm not sure if it was original to this particular promax or not but it is a 2.5, the gears are 1.75 and the casting denotes the same.

    The fastest YT I've ever read of on here was 110 MPH some years ago with a SS3000 or something.... I dunno but it was a lot more than a stock promax. I'm sure its got a few more MPH in it yet with a different prop but this is quite fast enough for me for now.
    1986 Hydrostream Valero YT - Fully restored '12.
    1997 225 Promax.

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