Presented in Rome on July 23rd 1983, the Biturbo S was characterized by its two-tone paint scheme (silver or red over grey lower-body) with blacked-out chrome trim. The seats were trimmed in a special Jacquard cloth designed by Missoni.
Lowered suspensions with wider tyres. Twin intercoolers fed by NACA ducts on the bonnet, boosting the 2-litre unit to 205 hp (2nd series SII with 210 hp). 1,038 of the original Biturbo S and SII were made until October 1986.
Introduced in 1984, the export version of the Biturbo S was fitted with the upgraded 2.5-litre unit instead of the 2.0-litre engine available only in Italy. It was sometimes referred to as Biturbo ES, where the “E” simply meant “Export”.
Other than the modifications linked to the engine upgrade, the Biturbo ES was similar to the Biturbo S, with two-tone paint and blacked-out chrome trim. The power output was 196 hp, 16 hp more than the Biturbo but 9 hp less than the Italian 2-litre Biturbo S, because of the catalyser fitted to match American regulations.
Story by Maserati S.p.A.
In Detail
| submitted by | Richard Owen |
| type | Series Production Car |
| production years | 1983 – 1986 |
| built at | Italy |
| engine | 90° V6 |
| position | Front Longitudinal |
| aspiration | Twin IHI Water-Cooled Turbos |
| ignition | Electronic Ignition |
| valvetrain | SOHC, 3 Valves per Cyl |
| fuel feed | 1 Weber 36 DCNVH 16/100 Carburetor |
| displacement | 1995 cc / 121.74 in³ |
| bore | 82 mm / 3.2 in |
| stroke | 63 mm / 2.5 in |
| compression | 7.8:1 |
| power | 152.9 kw / 205.0 bhp @ 5250 rpm |
| specific output | 102.76 bhp per litre |
| bhp/weight | 184.35 bhp per tonne |
| torque | 253.5 nm / 187 ft lbs @ 3200 rpm |
| body / frame | Unitary Steel Monocoque |
| driven wheels | RWD |
| wheel type | Magnesium Alloy |
| front tires | 205/55 VR 14, Pirelli P7 |
| rear tires | 205/55 VR 14, Pirelli P7 |
| front brakes | Discs w/ Vacuum Assist |
| rear brakes | Discs w/ Vacuum Assist |
| front wheels | F 35.6 x 16.5 cm / 14.0 x 6.5 in |
| rear wheels | R 35.6 x 16.5 cm / 14.0 x 6.5 in |
| steering | Rack & Pinion |
| f suspension | MacPherson Struts w/Telescopic Dampers, Coil Springs, Anti-Roll Bar |
| r suspension | Semi-Trailing Arms w/Telescopic Dampers, Coil Springs, Anti-Roll Bar |
| curb weight | 1112 kg / 2450 lbs |
| wheelbase | 2514 mm / 99.0 in |
| front track | 1420 mm / 55.9 in |
| rear track | 1431 mm / 56.3 in |
| length | 4153 mm / 163.5 in |
| width | 1714 mm / 67.5 in |
| height | 1305 mm / 51.4 in |
| transmission | ZF 5-Speed Manual |
| gear ratios | 3.42:1, 1.94:1, 1.39:1, 1.00:1, 0.79:1 |
| final drive | 3.31:1 |
| top speed | ~221 kph / 137.24 mph |
| 0 – 60 mph | ~6.5 seconds |
| fuel capacity | 61 litres or 16.10 gal. |
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