porsche ea839

Porsche has produced a number of V8 automotive engines over the years. Their first V8 debuted in 1977. Porsche has used their V8 engines in GTs, racing cars, sedans, sportscars, and SUVs.
Porsche's first V8 engine is the Type M28, which debuted in the Porsche 928 in 1977. It is an all-alloy design with a linerless block cast of a hypereutectic aluminum-silicon alloy whose bore surfaces are created by etching the aluminum back, exposing the precipitated silicon using the Alusil process. The M28 was introduced with a single overhead camshaft per cylinder bank operating two valves per cylinder, and bore × stroke measurements of 95 mm × 78. 9 mm , giving a displacement of 4. 5 L. A compression ratio of just 8. 5:1 allows it to use regular 91-octane gasoline. This early version makes 176 kW at a 5,500 rpm, which delivered a top speed of 230 km/h. Torque is 350 N⋅m at 3,600 rpm....