For many years until recently the Detroit Diesel was a 2 stroke that made plenty of power. The 6V71, 8V71, and 8V92 were 2 strokes used to power many trucks, boats, and a lot of fire apparatus. Many fire trucks and boats still use them. They fell out of favor with over the road trucks because of tighter emission restrictions.
The Evinrude Etec is a very good outboard. It has an auto winterization feature fogs the engines itself in minutes, with no trip to the dealer.
An Evinrude E-TEC engine does not require belts, camshafts or exhaust valves, which means there are fewer parts to wear down or malfunction than a four--stroke outboard.
I have owned them in the past and found the Etec to be quiet and smooth and almost maintenance free.
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