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Which Motor is Best?

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  • Which Motor is Best?

    It is an acknowledged fact that poly material boats are heavier than a comparable tin and fall in a similar weight range to glass.

    This is not necessarily a disadvantage. When you consider the thickness of the material, a double hull construction and the extra stability at rest, it should be looked at as an asset to the boat.


    Where you can come unstuck is with the horse power required to move the boat through the water. In the past there have been boats sold with motors matching the lower hp end of the rated horsepower information on the builders plate. These boats operate relatively well with light loads of 1 -2 people but tend to bog down when loaded with full fuel, pax capacity, esky and sundry items.

    From the general consensus on the forum, it is better to go to the higher end of the hp rating. Although you are operating a bigger motor, the savings are made with the motor not working as hard as a lower hp motor. You also have that extra grunt in the case of an unexpected situation such as bar crossings.

    While 4 stroke have been the leader of boat engines in relation to fuel economy and reliability for many years, the ETEC motors are now matching or if not exceeding these factors.

    ETEC motors still maintain that torque 2 stokes are known for but now have the added advantage of fuel efficiency and smokeless performance. They are also lighter than a 4 stroke. They also have the first 300 hours free of servicing which is a cost saving in it self. With ETEC being a new technology they haven't been around long enough to provide reliable data for longevity.

    4 stroke motors have been around for many years. They have developed a history of reliability which is evident by the number of single engine boats now compared with years ago, multi engine boats were common or a small secondary motor bolted on the back. They are fuel efficient, quiet and reliable. These motors are generally heavier than 2 stroke and ETEC motors due to more parts and require regular servicing.

    2 Stroke motors are becoming dinosaurs. They are cheaper than 4 strokes by many thousands of dollars and although they have a better performance in grunt and speed in comparison to 4 stroke, they are noisy and fuel guzzlers. Some use up to twice the amount of fuel as a 4 stroke.

    With the never ending changes to EPA legislation, the word in the market place is that the only 2 strokes allowed on the water will be ETEC or EFI. Manufacturers are being to sell off the older technology 2 stroke motors before this legislation comes into effect in the next two years.

    The issue of 2 stroke or 4 stoke is one of personal choice and dictated by finances and only you can make the decision on which one you want to power your boat.
    Cheers
    Dave
    sigpic

  • #2
    Don't buy a white large weight for a anchor as the don't even work keeping vessel in one spot they are just that a anchor.

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    • #3

      With the never ending changes to EPA legislation, the word in the market place is that the only 2 strokes allowed on the water will be ETEC or EFI. Manufacturers are being to sell off the older technology 2 stroke motors before this legislation comes into effect in the next two years.

      Well, 2018 and they're still selling 2 strokes. Guess that new legislation didn't quite come into effect...yet.

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      • #4
        I just put a 150 hp Merc 4 stroke on my boat,love it ! 3 litre block gives it heaps of torque !
        Cheers
        Giffo

        I don't get drunk ! I get awsome !

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        • #5
          That would give your vessel some get up a go Giffo, is the fuel economy and distance u travel a benifit to having newer upgrade motor fitted, ??

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          • #6
            Also got a 150hp Merc 4 stroke and also love it. Pushes the 5.99 along very nicely! Very economic (use a lot less than my old 60 on a 4.5) and so quiet.

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