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Headquarters A Mercury 50 HP outboard motor circa 1980 Six cylinder two-stroke engine in 1984. Mercury Marine is a marine engine division ... 250 horsepower Mercury ...
Mercury Marine, Mercury Racing, Tohatsu, Yamaha Marine, Nissan and Evinrude each developed computer-controlled direct-injected two-stroke engines. Each brand boasts a different method of DI. Fuel economy on both direct-injected and four-stroke outboards measures from a 10 percent to 80 percent improvement compared with conventional two-strokes ...
Four-stroke cycle used in gasoline/petrol engines: intake (1), compression (2), power (3), and exhaust (4). The right blue side is the intake port and the left brown side is the exhaust port. The cylinder wall is a thin sleeve surrounding the piston head which creates a space for the combustion of fuel and the genesis of mechanical energy.
The 250 was a stroked 200, made by increasing the stroke from 3.126 to 3.91 in (79.4 to 99.3 mm). Output was 155 hp (116 kW) in the Mustang, and the 250 became the base engine in 1971. The Ford Granada and Mercury Monarch offered the 250 inline-six for the 1975–1980 model years, when it was replaced by the 200 inline-six.
In 1950 Mercury engineers came out with the Super 10 Hurricane, Model KG-7. This motor was based on previous models KE-7 Lightning and KF-7 Super 10 Lightning. Upgrades included redesigned connecting rods, upgraded aluminum clamp and swivel brackets, a new higher RPM magneto, improved porting, an 8 Reed valve cage (as opposed to KE-7 and KF-7's ...
The 250 cc four-stroke model was discontinued in 1964, the 175 cc two-stroke model in 1965. Later in the 1960s, despite internal opposition from those who felt that scooters would dilute the macho image of the brand, Triumph (owned by BSA) produced another scooter and a motor tricycle for "shoppers".