The Biturbo 2.24v

...more power with greater flexibility and reliability.

The V6 - 4ohc - 24v Engine

The Body

Produced from 1988 to 1992 the new 2.24v. differed little from its predecessor and still sported the traditional four rectangular headlamps but with a more sporty looking radiator grille. Side skirts were added and a new front spoiler with two fog lights set either side of central air vent improved the drag coefficiency. This spoiler now included air ducts for the twin intercoolers now mounted just behind the headlamps. The bonnet included air vents. Four exhaust pipes now exited neatly from ducts in the re-designed rear bumper. A rear spoiler was added to the boot lid to give better handling at top speed.

The Engine

The real changes however were under the bonnet with the twin overhead camshaft, eighteen valve engine being replaced by a more powerful four overhead camshaft twenty four valve engine. Engine capacity remained the same with the 'Casa' favouring the 2-litre block. This new engine developed 245 bhp at 6,200 rpm and propelled the car to 100 km/h in only 5,9 seconds and gave a top speed of over 230 km/h, yet allowed the car to behave properly when driven in town traffic.

The new 2.24v.

The latest series of the 2.24v. was given a subtle facelift with some of the sharp angles smoothed out and the new lower radiator grille gave the new look 2.24v. a more aggressive look. These changes not only improved its looks but also its drag-coefficiency. The dipped beam headlamps were the smaller, circular polyelliptical type and giving better visibility at high speed. The headlamps were rectangular in shape and fitted with halogen bulbs. Under the front bumper two foglamps were encased in the restyled front spoiler giving a much smoother line.

Set into the bonnet were two new air vents to aid airflow through the engine bay. A new spoiler mounted just in front of the windscreen not only aided the aerodynamics but increased windscreen wiper efficiency. It also helped hide the wipers giving a cleaner look. New side skirts and a rear spoiler mounted on the boot lid added to the aerodynamics and new elegantly styled seven spoke 16 inch wheels gave the car an aggresive, sporty look. A new range of colours was also added to the range.

The Interior

The interior of the latest series of the 2.24v. emphasises the style and tradition of Maserati: the re-designed seats were in leather with side panels finished in Alcantara. The quality of the elm wood had been enriched, giving the interior an even richer feel: with the gear knob, the handbrake lever, the dashboard trim, the door trim and the climate control panel all finished in elm; the spokes of the wood-rimmed steering wheel, with its centre in leather, now housed horn buttons.

The 2.24v. was equipped with climate control which allowed the driver to experience a pre-selected temperature, this temperature was assured through twelve controllable outlets. The new front seats, after extensive ergonomic research, gave excellent lateral support and reclined electrically. To facilitate entry to the rear seats' the seat when tilted forward automatically moved forwards. The now classic dashboard had some minor design improvements and of course the clock still adorned the centre. Standard equipment included a fully adjustable steering wheel, touch sensitive climate control, central locking and electrically adjustable driver's seat, electric exterior rear view mirrors and windows.

Suspension and Braking System

Independent on all four wheels, Maserati now offered, as an optional extra, a system of electronically controlled adjustable suspension developed in co-operation with Koni. The driver was able to change the damper setting from a switch on the centre console. The four settings allowed the driver to adjust the setting from soft to firm according to road conditions. The system became standard equipment on the later version. This system proved so successful that it was used in the Shamal and the Ghibli II. The front suspension was Mac Pherson type with anti-roll bar, coil-springs and dual-effect telescopic pressurised shock absorbers. Rear suspension semi-trailing arms mounted on a subframe with coil-springs and dual-effect telescopic shock absorbers. Steering was by rack and pinion. The power assisted twin circuit braking system had disc brakes all round with ventillated discs, with floating calipers at the front.

Position front
Cylinders No. 6V at 90º
Bore and stroke 82mm X 63mm
Cubic capacity 1996cc
Compression ratio 7.6 ± 0.4
Maximum torque with cat. 34kgm/246lb-ft @ 3000rpm
Maximum torque without cat. 30.8kgm/223lb-ft @ 5000rpm
Maximum power with cat. 177kW/240bhp @ 6000rpm
Maximum power without cat. 180kW/245bhp @ 6200rpm
Turbochargers No 2 IHI watercooled
Intercoolers No 2 air to air

ENGINE BLOCK and cylinder heads in light alloy with removable wet liners in Nigusil® treated aluminium.

Water cooling by centrifugal pump.
Forced lubrication with total filtering.
No 4 overhead camshafts.
No 24 valves, 4 valves per cylinder (2 intake, 2 exhaust).
Electronic fuel injection and ignition.
Permanent overboost / 105 amps alternator / leaded fuel.
Catalytic emission control system with Lambda sonde.
Getrag manual 5 speed + reverse / Rear wheel drive.
Ranger® / Ratio: 3.77.
Monocoque construction.
Independent on all 4 wheels with electronic adjustment on 4 settings.

FRONT: Mac Pherson strut with antiroll bar, coil springs, oleodynamic pressurised bitubo shock absorbers, with double effect.

REAR: Tubular trailing arms, coil springs, oleodynamic pressurised shock absorbers, stabilizer bars.

STEERING: Power assisted rack and pinion steering.
Hydraulic, independent, power assisted twin circuit.
Front and rear ventilated discs with floating calipers.
Rear drum parking brakes.
Light Alloy- Front - 7"J X 16"      Rear - 7"J X 16"
Front - 205/50 ZR 16      Rear - 205/50 ZR 16
2 door coupe, 5 seater, Sound proofed with Silent Travel®. Integral fog lights and rear mounted spoiler.
Maximum speed with cat. over 140mph / 230kph
Maximum speed without cat. over 140mph / 230kph
Acceleration with cat. 0-62mph 6.1secs
Acceleration without cat. 0-62mph 5.9secs
Acceleration with cat. 0-1000m 26.2secs
Acceleration without cat. 0-1000m 26.1secs
Wheelbase 2514mm
Front track 1485mm
Rear track 1454mm
Overall length 4174mm
Width 1714mm
Height 1300mm
Dry weight with cat. 1305kg
Dry weight without cat. 1323kg
Fuel tank 80 litres
Boot area 400 cm³ approx
Turning circle 10.675m approx

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