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  1. The Delta S4's engine was a twin-charged 1.8l four-cylinder producing nearly 500 horsepower in race trim, which, combined with the car's AWD system made it capable of 0-60 mph in 2.3 seconds on loose surfaces.
    www.hotcars.com/a-deep-dive-into-the-lancia-delt…
    The Delta S4 was built on a racing style tubular space frame chassis and it was powered by a twincharged DOHC 16 valve 1.8 litre (1,759 cc) four cylinder engine.
    silodrome.com/lancia-delta-s4-group-b/
    Due to the S4’s 1759 cc engine and twin-charged induction system, it was placed in the 2000 – 2500 cc class (FISA multiplication factor of 1.4 for forced induction vehicles). This meant that the S4 could weigh as little as 890kg (1962 lbs).
    garagedreams.net/history/the-complete-history-of-t…
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    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). The twincharged system was a development of the 037 engine that generated 325 hp (242 kW) with a supercharger only. An engine capacity multiple of 1.4 was applied … See more

    The Lancia Delta S4 (also known by its Abarth project code SE038) is a Group B rally car manufactured by the Italian car company Lancia. The Delta S4 competed in the World Rally Championship in 1985 and See more

    In competition, the car won its first event, the 1985 RAC Rally in the hands of Henri Toivonen and carried Markku Alén to second in the drivers' championship the following year. For two weeks after the end of the 1986 season Alen was champion until the See more

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    Delta S4 "Stradale" image

    Between October 1985 and 1986 Lancia, in keeping with Group B racing regulations, was to have built 200 of a road-going version … See more

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  4. WEBJul 17, 2019 · Learn about the Lancia Delta S4, a twin-charged four-wheel drive rally car that dominated the Group B series in the 1980s.

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  5. WEBJun 1, 2022 · The rules allow a 900- to 1000-kg car—considered by Lancia the best weight for both lightness and safety—with one of two engines: a normally aspirated powerplant up to 2.5 liters or a...

  6. Lancia Delta S4 (Group B) | Rally Group B Shrine

  7. WEBFeb 4, 2020 · The Lancia Delta S4 Stradale was a road-legal version of the Lancia Delta S4 rally car, with a 1.8 litre, DOHC inline-4 engine that used both a supercharger and a turbocharger. It produced over 500 hp and …

  8. WEBMar 10, 2021 · The Lancia Delta S4 was a twin-charged, all-wheel drive, mid-engined homologation special that competed in the deadly Group B rally series. Learn about its engine, design, performance and tragic fate …