Johnny Lone's List: BusinessTech

• 2 strokes are also generally cheaper and keep their value better when it comes to resale.
• 2 stroke engines are lighter and faster
• parts are readily available, making repairs easy.
• the design on these engines is less complex than a 4 stroke, meaning problems are less likely to arise.
• 2 stroke engines are more pollutive than 4 stroke engines
• Their engines are lubricated by the oil that is mixed into the gasoline, meaning the exhaust is smoky and contains unburned oil, which in turn pollutes the water.
  
• quieter, smoother and more economical
• less pollution and smoke
• repair is required it is usually more expensive and parts are limited.
• more complicated with more parts so they often require repairs more often
• heavier than 2 stroke outboards

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• For many years, two-strokes suffered  a   reputation as fuel-slurping,   dirty-exhaust outboards. That’s changed. Most of the bigger,   conventional two-strokes have been retired, replaced by   state-of-the-art, direct-injected two-strokes and   fuel-injected two-strokes, available in a bewildering array of horsepower   ratings. The new machines are wonderful for the way they conserve fuel and accelerate    a boat like crazy.
• Unlike a   conventional, old-school,  two-strokes, no fuel wafts into the combustion   chamber to inadvertently spill out the exhaust port. Instead,   fuel injects directly into the combustion chamber in a precise   amount and at the split second required
• Yamaha HPDI

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