4.18v. - 1990 to 1992
Launched in December 1990, the 4.18v was a model very similar to the 422, destined to the Italian market with the traditional 3-valve-per-cylinder heads rather than the 4-valve-per-cylinder arrangement of the 4.24v. Its main feature was the ABS fitted as standard, a first for the Biturbo family.
Produced in only 77 units, this particular model is unquestionably one of the rarest amongst the Biturbo range.
Technical data
| 0-60 mph | |
| Bodywork | four-door saloon seating five |
| Bore and stroke | 82x63 mm |
| Brakes | discs all round (ventilated front discs with floating calipers), dual circuit, servo-assisted, ABS, two rear drum brakes for emergency and parking |
| Brakes front | |
| Brakes rear | |
| Chassis | monocoque steel construction |
| Compression ratio | 8.1:1 |
| Cooling system | water-cooled, centrifugal pump |
| Displacements (unitary) | |
| Dry weight | 2,811 lbs (1,275 kg) |
| Engine | 90° V6, light alloy block and head, Aluminum-Nigusil cylinder liners |
| Engine weight | |
| First race | |
| Front Tyres | |
| Front suspension | MacPherson struts, dual-rate telescopic dampers, coil springs, anti-roll bar |
| Front track | 56.77 in. (1,442 mm) |
| Fuel & lubricant | |
| Fuel feed | two IHI water-cooled turbos, two air-to-air intercoolers |
| Fuel tank | 18.04 Imp. gal. (82 litres) |
| Gear ratios | |
| Height | 53.93 in. (1,370 mm) |
| Ignition | electronic injection and ignition |
| Kerb weight | |
| Length | 173.23 in. (4,400 mm) |
| Length-Width-Height | |
| Lubrication | full-flow filter lubrication |
| Maximum power | 220 bhp at 6,350 rpm |
| Maximum torque | 26.7 kgm (193.5 lbs/ft) at 3,500 rpm |
| Model | 4.18v. |
| One mile | |
| Production dates | 1990-1992 |
| Production start | 1990 |
| Quarter mile | |
| Rear Tyres | |
| Rear suspension | semi-trailing rear arms mounted on a rear subframe, coil springs, dual-rate Bilstein pressurised gas telescopic dampers |
| Rear track | 57.20 in. (1,453 mm) |
| Reduction | |
| Steering | hydraulic power-assisted rack and pinion |
| Timing gear | three valves per cylinder (two intake, one exhaust), twin overhead camshafts |
| Top speed | 135 mph (218 km/h) |
| Total displacement | 1,996 cc |
| Transmission | 5-speed ZF + reverse, rear-wheel drive and Torsen differential, 3.73:1 ratio |
| Tyres | fr/rear 205/55 R 15 |
| Weight distribution | |
| Wheelbase | 102.36 in. (2,600 mm) |
| Wheels | light alloy, 7" J x 15" (five fixing bolts) |
| Width | 68.11 in. (1,730 mm) |