Lancia Delta

The Lancia Delta S4 is a Group B rally car manufactured by Lancia. 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 by the 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 Inline-four engine combined supercharging and turbocharging to reduce turbo lag at low engine speeds. The twincharged system was a development of the 037 engine that generated 325 hp with a supercharger only. An engine capacity multiple of 1. 4 was applied to forced induction engines by the FIA and the choice of 1,759 cc put the S4 in the under 2,500 cc class, which allowed for a minimum weight of 890 kg....