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In April 2011, Porsche announced the third generation of the 997 GT3 RS with an enlarged 4.0-litre engine having a power output of 500 PS (368 kW; 493 hp). The naturally-aspirated 4.0-litre flat-six engine (the largest engine displacement offered in a street-legal 911) was introduced with their 2011 911 (997) GT3 RS 4.0, in 2011. [18]
The Spyder is a lightweight high performance version of the Boxster and the lightest Porsche in the model lineup at the time, weighing 1,315 kg (2,899 lb). It is powered by the largest and most powerful engine used in a Boxster at the time, a 3.8 litre flat-6 shared with the Cayman GT4 and 911 Carrera S, rated at 375 hp (280 kW).
The Porsche Boxster is a mid-engine two-seater roadster. It was Porsche's first road vehicle to be originally designed as a roadster since the 914.The first-generation Boxster (the 986) was introduced in late 1996; it was powered by a 2.5-litre flat six-cylinder engine.
1953–1957 1.5 L (1,498 cc) 81 kW (110 PS; 109 bhp) 117 N⋅m (86 lb⋅ft) Type 547 air-cooled, four-stroke, DOHC, eight-valve boxer flat-four (550/1500 RS); 1956–1957 1.5 L (1,498 cc) 99 kW (135 PS; 133 bhp) 145 N⋅m (107 lb⋅ft) Type 547 air-cooled, four-stroke, DOHC, eight-valve boxer flat-four (550 A/1500 RS)
LSPI events are random and infrequent, and their effects on impacted vehicles can include very high-pressure spikes, loud knocking noises and sometimes catastrophic engine damage. [4] It's commonly known as "Detonation or Knock". Engine management systems can overcome pre ignition by the means of a knock or detonation sensor.
For the 2007 model year, the base Boxster received a revised engine featuring VarioCam Plus to provide a 3.7 kW (5.0 hp) power increase (183 kW (245 hp) the same as the Cayman). The Boxster S' engine was upgraded from 3.2-litre to 3.4-litre, resulting in a power increase of 11 kW (15 hp) more (220 kW (295 hp) the same as the Cayman S).
The Porsche 986 is the internal designation for the first generation Boxster, a mid-engine two-seater roadster built by German automobile manufacturer Porsche. Introduced in late 1996, the Boxster, based on the 1993 Boxster Concept, was Porsche's first road vehicle to be originally designed as a roadster since the 550 Spyder .
The 2016 Porsche Boxster/Cayman (982) mid-engined sports cars downsized from a naturally aspirated flat-six engine to a turbocharged flat-four engine, Porsche's first flat-four since the mid-1970s. This engine is produced in displacements of 2.0–2.5 L (122–153 cu in) and produces up to 365 hp (272 kW). [ 14 ]