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  1. J

    At my wits end...

    Hi all, Im seeking the advice of the prop gurus. I own a 2010 Sylvan Expedition with a 115-hp 4stroke. This makes for a very stern heavy ride. The boat is an aluminum semi deep v which i swear was NOT meant to hold the extra weight of a 4stroke. The boat wont stop porpoising. Im currently...
  2. J

    Porposing: Motor too high, or too low?

    Hi all, I have a brand new 17' Sylvan with a 115hp 4-stroke. I am presently running a 17" pitch prop which gets me up to 6200RPM WOT trimmed as much as I can before porposing. I can only trim up the motor a tiny bit, before porposing occurs. I feel that I'm plowing, and would like more lift...
  3. J

    Unhappy with 2010 Merc 115hp 4-stroke

    Hi all, After working out most of the bugs with my new 17' Sylvan Expedition, I am less than happy with the fuel economy of the 115hp 4-stroke. The boat is a deep-V weighing 1220lbs dry, holds 90litres of fuel, 2 batteries, and very little gear onboard. The dealer initially put a 15" pitch...
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