Lancia Delta S4 Rally Group B | PURE SOUND | Full HD

The Lancia Delta S4 is a Group B rally car manufactured by the Italian car company Lancia.
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The Delta S4 competed in the World Rally Championship in 1985 and 1986, until Group B class was disbanded and the cars were eventually banned from competition completely by European sanctioning body FIA.
The car replaced, and was an evolution of the 037.
The S4 took full advantage of the Group B regulations, and featured a midship-mounted engine and all-wheel drive for superior traction on loose surfaces.
The car's 1,759 cc (1.8 L) Inline-four engine combined supercharging and turbocharging to reduce turbo lag at low engine speeds (rpm).[2] The engine generated a maximum output of 490 PS (360 kW; 483 hp) but some sources even claim that the engine was capable of generating 507 PS (373 kW; 500 hp). In 1985, when Lancia engineers tested an S4 engine under extreme conditions, it developed around 1,014 PS (746 kW; 1,000 hp) at 5 bars of boost pressure. An engine capacity multiple of 1.4 was applied to forced induction engines by the FIA and the choice of 1,759 cc (1.8 L) put the S4 in the under 2,500 cc class, which allowed for a minimum weight of 890 kg (1,962 lb). The combined super/turbocharger system (often referred to as twincharging) was a development of the 037 engine that generated 325 hp (242 kW) with a supercharger only. #DESPORTO #SPORTS #RACE

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