Biturbo - 1981 to 1985 (1st series only)

Biturbo

Officially presented on December 14, 1981 (the company was born on 12/14/1914), the Biturbo was the car that turned Maserati around by re-entering the 2.0-litre class. Sales started in April 1982 in Italy.

Assembled at the Innocenti works in Milan, the car sported a compact notchback coupé body styled by freelance designer Pierangelo Andreani, and measured 4.153 meters in length on a wheelbase of 2.514 meters. The interior trim was opulent, with room for four in an atmosphere dominated by leather and wood.

The innovative short-stroke 90° V6-engine featured twin turbochargers and single cam 3-valve heads: two firsts for a road car. One of the intake valves was larger than the other, thus creating a swirl effect which increased combustion efficiency. The 1,995cc version developed 180 hp and was meant for the tax-ridden home market, whereas a 2,491cc evolution with 190 hp was reserved for exportation (see Biturbo E).

From June 1983, Maserati fitted the new Automatic Boost Control system (MABC), which electronically adjusted the turbocharger boost pressure according to the needs of the engine. The second series was introduced in July 1985 (See Biturbo II). 9206 units were built combining series I & II.

Technical data

0-60 mph 0 to 100 km/h in 6.5 sec.
Bodywork three-box two-door coupé seating five
Bore and stroke 82x63 mm
Brakes discs all round, dual circuit, servo-assisted, additional drums on rear wheels for handbrake
Brakes front
Brakes rear
Chassis monocoque steel construction
Compression ratio 7.8:1
Cooling system water-cooled, centrifugal pump
Displacements (unitary)
Dry weight 2,394 lbs (1,086 kg)
Engine 90° V6
Engine weight
First race
Front Tyres
Front suspension MacPherson struts, dual-rate telescopic dampers, coil springs, anti-roll bar
Front track 55.91 in (1420 mm)
Fuel & lubricant
Fuel feed two IHI turbos, a single Weber 36 DCNVH 16/100 twin-choke carburettor, MABC (Maserati Automatic Boost Control) from June 1983 onwards
Fuel tank 13.41 Imp. gal. (61 litres)
Gear ratios I=3,42 II=2,08 III=1,39 IV=1,00 V=0,87 R=3,66 (Automatico: I=3,42 II=2,08 III=1,39 R=2,09)
Height 51.38 in. (1,305 mm)
Ignition electronic
Kerb weight
Length 163.50 in. (4,153 mm)
Length-Width-Height
Lubrication full-flow filter
Maximum power 180 bhp at 6000 rpm
Maximum torque 25.8 kgm (187 lbs/ft) at 4,400 rpm
Model Biturbo
One mile 0 to 1000m. in 29.0 sec.
Production dates 1981-1987 (Including 2nd series)
Production start 1981
Quarter mile
Rear Tyres
Rear suspension semi-trailing rear arms mounted on a rear subframe, coil springs, dual-rate hydraulic telescopic dampers
Rear track 56.34 in. (1431 mm)
Reduction
Steering rack and pinion (power assistance to order)
Timing gear three valves per cylinder (two intake, one exhaust), twin overhead camshafts
Top speed 133.5 mph (215 km/h)
Total displacement 1,995 cc
Transmission 5-speed ZF + reverse (3-speed automatic to order), rear wheel drive with Salisbury-type differential
Tyres fr/rear 195/60 HR 14, Pirelli P6
Weight distribution
Wheelbase 98.97 in. (2,514 mm)
Wheels light alloy, 5" 1/2 J x 14"
Width 67.48 in. (1,714 mm)