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Thread: Getting The Best Gas Mileage

  1. #11
    Senior Member Miller Tyme's Avatar
    Join Date
    Feb 2006
    Wheel 15 x 15 Michagans on my 52 Monticello with twin 7.4 Mercs. Get about 1mpg @ 2000 rpm at about 9.7 mph. WOT it drops to 3 gallons to the mile @ 20 mph.

    My 43 Nautaline wheeled the same props with 2- 318 Chryslers and delieverd 1.2 mpg @ 2200 rpm going approx 11moh and .6mpg @ 4000rpm and approx 24mph.

    But I never bought a houseboat to get there quick, I can enjoy a cocktail at 10 mph as much as sitting at the dock at 0 mph

  2. #12
    Senior Member
    Join Date
    Jul 2007
    As small an engine as possible.....
    I'm pushing around a 18,000 LB 45 foot boat with a 50 HP outboard.
    At just above idle I make about 3 knots, at full throttle about 5 knots.
    Like I tell everyone; I can go anywhere I want on the lake, just not very fast.

  3. #13
    Senior Member Stmbtwle's Avatar
    Join Date
    Apr 2003
    Ruskin, Florida
    Same here. If I want to go fast I'll get a speedboat.
    She's a tired old barge but she's paid for!

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