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 mph0 to 100 km/h in 6.5 sec.
Bodyworkthree-box two-door coupé seating five
Bore and stroke82x63 mm
Brakesdiscs all round, dual circuit, servo-assisted, additional drums on rear wheels for handbrake
Brakes front
Brakes rear
Chassismonocoque steel construction
Compression ratio7.8:1
Cooling systemwater-cooled, centrifugal pump
Displacements (unitary)
Dry weight2,394 lbs (1,086 kg)
Engine90° V6
Engine weight
First race
Front Tyres
Front suspensionMacPherson struts, dual-rate telescopic dampers, coil springs, anti-roll bar
Front track55.91 in (1420 mm)
Fuel & lubricant
Fuel feedtwo IHI turbos, a single Weber 36 DCNVH 16/100 twin-choke carburettor, MABC (Maserati Automatic Boost Control) from June 1983 onwards
Fuel tank13.41 Imp. gal. (61 litres)
Gear ratiosI=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)
Height51.38 in. (1,305 mm)
Ignitionelectronic
Kerb weight
Length163.50 in. (4,153 mm)
Length-Width-Height
Lubricationfull-flow filter
Maximum power180 bhp at 6000 rpm
Maximum torque25.8 kgm (187 lbs/ft) at 4,400 rpm
ModelBiturbo
One mile0 to 1000m. in 29.0 sec.
Production dates1981-1987 (Including 2nd series)
Production start1981
Quarter mile
Rear Tyres
Rear suspensionsemi-trailing rear arms mounted on a rear subframe, coil springs, dual-rate hydraulic telescopic dampers
Rear track56.34 in. (1431 mm)
Reduction
Steeringrack and pinion (power assistance to order)
Timing gearthree valves per cylinder (two intake, one exhaust), twin overhead camshafts
Top speed133.5 mph (215 km/h)
Total displacement1,995 cc
Transmission5-speed ZF + reverse (3-speed automatic to order), rear wheel drive with Salisbury-type differential
Tyresfr/rear 195/60 HR 14, Pirelli P6
Weight distribution
Wheelbase98.97 in. (2,514 mm)
Wheelslight alloy, 5" 1/2 J x 14"
Width67.48 in. (1,714 mm)