Yamaha Four stroke or Evinrude Etec Two stroke for your speed boat or RIB? who is right ?

Yamaha Fourstroke or Evinrude Etec Twostroke for your speed boat or RIB? who is right ?

Yamaha Fourstroke or Evinrude Etec Twostroke outboard motor?

If you have done much research in to the age old subject of two stroke or fourstoke outboard motors for your RIB or Speed boat, you will probably be rather muddled now.

The main reason for this is that people always try to sell you what they have. Personally I think that both types of modern outboard engine technology have some merits.

The main differences between Yamaha Fourstroke outboard motor and a Evinrude Etec Twostroke outboard motor?
are:

Four-stroke engines are generally:
Heavier
More moving parts
Quieter
Higher service cost

Modern two-stroke engines are generally:
As efficient if not more (e.g. Evinrude ETEC)
Lighter
Quicker to get going
Less expensive to maintain

Here is a great video that I found on youtube showing some of the major benifits of a modern Evinrude Etec twostroke engine over a Yamaha fourstroke.

To be clear we are talking about the comparison of a Modern directly injected twostroke Etec outboard engine (not the same as the traditional inefficient, noisy engine) verses a modern Fourstroke like a Yamaha outboard motor.

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