|Body and chassis|
|Class||Sports / Luxury|
|Platform||Biturbo phase 3|
|Engine||2.0L DOHC 24V V6 twin turbocharged|
|Transmission||5-speed Getrag manual|
|Wheelbase||2,540 mm (100 in)|
|Length||4,190 mm (165 in)|
|Width||1,712 mm (67.4 in)|
|Height||1,305 mm (51.4 in)|
|Curb weight||1,240 kg (2,730 lb)|
|Successor||Shamal and Ghibli II|
The Maserati Racing (Tipo 331) is an automobile produced by Maserati from 1990 to 1991. It was based on a sports car introduced by Maserati in 1981, the Biturbo. The Biturbo was a two-door, four-seater notchback coupé featuring a two-litre V6 engine with two turbochargers of somewhat smaller dimensions than the BMW 3 series.
Built only in 230 copies, in 1990 and early 1991, this car was dedicated to the Italian market. Later, several units could be found spread across Europe (France, Sweden, Danmark, Germany and the Netherlands). Limited documentation was available, which made homologation in some countries (still) a huge administrative challenge.
Among these changes several were related to the engine:
- new lighter crankshaft,
- new exhaust valves, sodium filled for improved heat dissipation,
- new combustion chambers,
- new lighter conrods,
- new lighter forged aluminum pistons,
- new IHI turbochargers.
Combined with new settings on the two engine controllers from Magneti-Marelli, in charge of the ignition, the fuel injection and the turbo boost management, this allowed the power to increase to 285 hp (208 kW) at 6250 rpm with a specific output 142 hp/l. The torque is 37 kg·m (362.8 N·m; 267.6 lb·ft) already at 3,500 rpm, peaking at 38 kg·m (372.7 N·m; 274.9 lb·ft) at 4,250 rpm. This engine is called AM 490 in the Maserati engine reference book. The engine has been made compatible with lead-free gasoline.
In the chassis the lower tunable electronic KONI shock absorbers allowed for selection among 4 settings according to the level of comfort or road handling required at the flick of a switch. This is combined with a 5 speed gearbox from Getrag and a limited slip differential "Ranger" from Maserati but suspected to use Quaife technology.
The new front fascia used new ellipsoid headlights developed by Magneti-Marelli. Marcello Gandini, the designer of a later model, developed an aerodynamic kit that included front spoiler, windshield wiper spoiler, rear spoiler and side skirts. The choice of colour of the Racing was limited to red or black.
Inside, the only change was the wood paneling that has been painted dark grey (carbon fiber grey).
- Max. speed: 256 km/h (159 mph)
- 0–100 km/h (0–62 mph): 5.9 s.
- 0–1,000 m (0.00–0.62 mi): 25.60 s.