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Slow boat woes....-gctid369095

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    Slow boat woes....-gctid369095

    I had a beautiful swim platform installed (and man was it heavy) and since I had it installed I did not find out how heavy it was until I put the boat in the water so now Im stuck with it, Live and learn I guess. My problem now is that the boat is terrible on take off has anyone done anything to the little 4 banger motor to make it run any better or does anyone have any ideas on how to get this little boat to plane out in a semi reasonable distance? The boat is a 2005 Bayliner 175 with the 4 cylinder merc in it completely stock minus the swim platform of course. It was never the fastest but now I donÔÇÖt even want to run it. If I remove the platform then im out big bucks and have holes to deal with. So any ideas would be great.

    #2
    Time for a bigger boat...
    Custom CNC Design And Dash Panels

    iBoatNW

    1980 CHB Europa 42 Trawler- "Honey Badger"

    Comment


      #3
      Install a set of smart tabs (trim tabs). This will help getting your boat up on plane. Also try to load some gear up front to counter act the additional weight in back.
      Phil, Vicky, Ashleigh & Sydney
      1998 3055 Ciera
      (yes, a 1998)
      Previous boat: 1993 3055
      Dream boat: 70' Azimut or Astondoa 72
      Sea Doo XP
      Sea Doo GTI SE
      Life is short. Boats are cool.
      The family that plays together stays together.
      Vice Commodore: Bellevue Yacht Club

      Comment


        #4
        How about a set of fins? I had these on my 180 with 135 hp 4 banger and it certainly helped. Something like this...

        http://www.jerrylabella.com/on_the_level/hydrofoil.jpg
        2003 Bayliner 305 - SOLD!
        Twin 5.7L, Carb'd, 445 hours
        Bravo II drives
        Closed-cooling

        Comment


          #5
          I had a "Stingray" looked the same as your photo, on my 16' Zodiac, I carried a very heavy load, with the foil on I got up on plane very quickly, it would be the least expensive way to go, if it does not work, well they do not cost that much.

          You are still limited in HP, and as mentioned, move as much protable weight forward as possible, that will make a big difference.
          Pat says: DO-IT-RIGHT THE FIRST TIME!

          Bayliner 3870 "ALASKA33)
          Twin 350 GM power
          Located in Seward, AK
          Retired marine surveyor

          Comment


            #6
            When looking at a huge boarding platform, you have to consider that while they certainly increase your available space, there is NOTHING underneath to support that load in terms of floatation.

            One of the reasons I bought a 246 was that the boarding platform seemd reasonably proportioned compared to the hull.

            A larger boarding platform puts weight in the worst possible spot.

            and more of it!
            2007 Discovery 246
            300mpi BIII
            Welcome island Lake Superior

            Comment


              #7
              Just how big is your new swim platform? Any pictures?

              Comment


                #8
                Your not gonna soup up the little 4 banger take it back off and sell it.
                Be good, be happy, for tomorrow is promised to no man !

                1994 2452, 5.0l, Alpha gen. 2 drive. Sold ! Sold ! Sold !

                '86 / 19' Citation cuddy, Merc. 3.0L / 140 hp 86' , stringer drive. Sold ! Sold ! Sold !

                Manalapan N.J

                Comment


                  #9
                  Chief Alen wrote:
                  Your not gonna soup up the little 4 banger take it back off and sell it.
                  If this is all that heavy, I agree.

                  Instead, build yourself a Teak platform using SS brackets.

                  Any stern heaviness on a small boat is going to affect the planing attitude.





                  .
                  Rick E. Gresham, Oregon
                  2850 Bounty Sedan Flybridge model
                  Twin 280 HP 5.7's w/ Closed Cooling
                  Volvo Penta DuoProp Drives
                  Kohler 4 CZ Gen Set

                  Comment


                    #10
                    Chief Alen wrote:
                    Your not gonna soup up the little 4 banger take it back off and sell it.
                    If this is all that heavy, I agree.

                    Any stern heaviness on a small boat is going to affect the planing attitude. It even affects some of our larger boats.

                    What if you were to instead build yourself a Teak platform using SS brackets?





                    .
                    Rick E. Gresham, Oregon
                    2850 Bounty Sedan Flybridge model
                    Twin 280 HP 5.7's w/ Closed Cooling
                    Volvo Penta DuoProp Drives
                    Kohler 4 CZ Gen Set

                    Comment


                      #11
                      A foam core platform would have been a better choice, that teak is heavy.
                      Pat says: DO-IT-RIGHT THE FIRST TIME!

                      Bayliner 3870 "ALASKA33)
                      Twin 350 GM power
                      Located in Seward, AK
                      Retired marine surveyor

                      Comment


                        #12
                        I would install Smartabs. I did on my 192 (which has a full width fiberglass platform and 3.0L) and it made a big difference in boat performance.

                        Comment


                          #13
                          Welcome to BOC.

                          You can try tabs and it will do you some good, platform or not, but the real world is you have added weight and in the worst place possible.

                          Sometimes we just have to bite the bullet, realized we have done something in error and reverse.

                          The holes can be repaired with no damage so I agree your best route may be to remove it.

                          By your own words you don't want to run your boat any longer. You can't have that condition. You won't be able to sell it either.

                          Were me I would try the tabs because they won't hurt.

                          Doug
                          Started boating 1955
                          Number of boats owned 32
                          Bayliners
                          2655
                          2755
                          2850
                          3870 presently owned
                          Favorite boat. Toss up. 46' Chris Craft, 3870 Bayliner

                          Comment


                            #14
                            How does the platform weight affect static posture of your boat? In other words do you have a noticeable change in waterline of your boat at rest after installing this? Like others have said, adding weight to stern on any planing hull boat is the worst performance killer. The trim tabs may help, however they add more drag. If your engine does not have enough HP to overcome weight and additional drag induced by trim tabs, its not going to help getting out of the hole. Also, if you do add tabs, you may have to go down a pitch on your prop to provide better low speed torque, it all depends if your new configuration allows you to reach recommended WOT RPM.

                            Some of the things you may wanna try is moving passengers or other heavy wight toward the bow to balance the boat.

                            Comment


                              #15
                              How much weight are we talking? Where did you get this thing? I had one from swim-platform.com that was 4' long and 8.5' wide on my 2455; it only weighed 61 pounds and had no noticeable effect on the boat. I'm having a hard time picturing a platform sized for the 175 that's all that heavy.

                              I'd like to hear the actual weight, and unless it really is a lot, you might want to take a look at other potential issues like state of tune.

                              Also, no, there is no reasonable way to increase HP on that little motor.

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