Maserati Bora 4.7
The Bora was Maserati’s first mid-engined road car and was introduced in March 1971 at the Geneva motor show. Powered by Maserati’s proven 4.7 liter 90° V8, mounted longitudinally, it was a true supercar which promised to fully maintain the company’s core ethos of class, comfort and refinement. Judging by the critical acclaim it received throughout this period, and still continues to generate today, it delivered.
After the success of the Ghibli, Maserati once again turned to Giorgetto Giugiaro and his newly founded Italdesign studio to style the new model named after a brisk breeze off of the Eastern Adriatic coast. Pietro Frua also submitted a full-size mock-up, but Giugiaro’s proposal proved to better encapsulate the modern era whilst concurrently fitting in harmoniously with other models in the range. The bodies were produced in Modena by Officine Padane. The 5-speed ZF gearbox was mounted in a sub-frame together with the rear suspension.
With Maserati now under Citroën ownership the Bora made use of the French manufacturer’s parts bin, including the hydraulics that operated the brakes, pop-up headlamps, driver seat and the adjustable pedal block. The 310 hp output (300 hp in America due to restrictions on emissions) permitted a top speed of 260 km/h (162 mph). At the end of 1971 Giugiaro presented a seminal concept car based on the Bora: the Boomerang.
Technical Specifications
| Model | Bora 4.7 |
| Maserati internal code | tipo AM117 |
| Production start | 1971 |
| Number Produced | 289 |
| Ignition | Bosch coil ignition and distributor |
| Lubrication | concentric gear pump |
| Transmission | ZF 5-speed + reverse synchromesh, rear wheel drive, single dry plate clutch, self-locking differential |
| Reduction | 1:3.77 |
| Gear ratios | I=2.58; II=1.52; III=1.04; IV=0.846; V=0.74; R=2.86 |
| Chassis | self-supporting body/chassis |
| Front suspension | transversal deformable four-side with coil springs, telescopic shock absorbers and stabilizer bar |
| Rear suspension | coil springs, telescopic shock absorbers and stabilizer bar |
| Brakes | dual hydraulic high pressure circuit, second mechanical system on rear disks for parking |
| Brakes front | 280 mm ventilated disks |
| Brakes rear | 280 mm ventilated disks |
| Steering | rack and pinion with dampers |
| Cooling system | water cooled via a centrifugal pump and two electrically-driven fans |
| Length | 170 inches (4,335 mm) |
| Width | 69.6 inches (1.768 mm) |
| Height | 44.6 inches (1,134 mm) |
| Wheelbase | 102.3 inches (2,600 mm) |
| Front track | 58 inches (1,474 mm) |
| Rear track | 56.9 inches (1,447 mm) |
| Dry weight | 3,306 lbs (1,500 Kg) |
| Curb weight | 4,034 lbs (1,830 Kg) |
| Tires | 215/70 VR 15 Michelin as standard, Pirelli radial as an option |
| Wheels | 7 ½ / 15 |
| Top speed | 174 mph (280 kmh) |
| Bodywork | 2-door 2-seater mid-engine coupé |
| Fuel tank | 19.5 Imperial gallons / 25 US gallons (90 liters) |
| Range | 400/500 km (320/400 miles) |
| 0-62 mph | 6.7 sec (0-100 kmh). |
| Production dates | 1971-1978 |
| Engine | 90° V8, mounted longitudinally amidships |
| Bore and stroke | 93.9x85 mm |
| Total displacement | 4719 cc |
| Displacements (unitary) | 588.628 cc |
| Compression ratio | 8.5:1 |
| Maximum power | 310 bhp at 6,000 rpm |
| Maximum torque | 47 Kgm at 4,200 rpm (341 lbs/ft) |
| Timing gear | two valves per cylinder, twin overhead camshafts per cylinder bank |
| Fuel feed | four vertical Weber 42 DCNF/14 carburetors, Bendix electric pump |
| Fuel & lubricant | N.O 90/100 RM |

