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Thread: 1981 Sutphen

  1. #1
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    1981 Sutphen

    1981 Sutphen Sport 20’

    1992 Mercury 275

    Engine was rebuilt at the beginning of last year.
    Transom has been replaced
    New Floor
    Infinity Marine Flooring installed
    Impeller Replaced in Spring
    New Hydraulic Steering Hoses
    4 JL Audio Speakers and Amp
    Interior LED Lighting,
    Ski Pole
    2005 Load Rite Aluminum Trailer

    This Sutphen is a great boat, very nice control in the chop and cuts through the waves surprising well for its size due to the deep Vee hull design . I have a few props to go with the boat as well , one I used for water skiing which pulls and holds a line very well and the other is a go fast prop and will push the boat around 70 to 72MPH. The only thing that isn’t working on the boat however is the trim indicator gauge, the sensors stopped working on the motor at the beginning of last year. If you have any questions please don’t hesitate to ask!

    Thank You, Dan

    860 235 4477
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  2. #2
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    forest lake, mn
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    That looks like an early 90s v6.... 275??? I've never heard or seen one of those. Am I in the dark here or?

  3. #3
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    Yes, that is a 3.4 Merc V6 they came in 300/275/250 hp models....
    1970 Glastron Carlson CT-15, Merc 1350
    1983 Team Shadow 21, Merc 2.4 200
    1977 Hydrostream Ventura II Comp, under construction. Have 1500xs waiting.

  4. #4
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    How many years mercury made 3.4 ???

  5. #5
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    Not sure of exact numbers? But it was a short run, mid '80's to early '90's...
    1970 Glastron Carlson CT-15, Merc 1350
    1983 Team Shadow 21, Merc 2.4 200
    1977 Hydrostream Ventura II Comp, under construction. Have 1500xs waiting.

  6. #6
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    Asking price Dan?
    For anyone looking at this boat I had a 17' Sport Pacer with a 175 OMC for many years and it was the most fun boat I ever had. I set it up with a ski pylon just like Dan's, a negative 3 degree 4" transom wedge, and a raker prop. It would easily pull with any of the inboards in my ski club. My buddies regularly ran short line behind it and it would corner well enough that we were able to do boat-Os (ski around the boat). This is a rugged and fabulous all around ride!
    Click image for larger version. 

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    Last edited by cougar21300; 09-08-2019 at 11:43 AM.
    13' whaler w/40, 17' Sutphen w/175, 20' HST w/225, 21' Cougar w/300 ...and next??

  7. #7
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    How does it drive at 70 with no setback? Do you have to be really on top of the chine walk? Do you know the dead rise on it?

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