Ferrari 308 GTBi, the series of the Cavallino opens the doors to the innovative injection system



Officially entered into production in 1980, the Ferrari 308 GTBi is introduced with the aim of adapting the 308 series to world legislation that is in the process of reducing emissions produced by exhaust gases.


Precisely because of these new directives, fuel injection is adopted on the 308 GTB; the model name becomes 308 GTBi, where the suffix i in the vehicle code indicates the presence of the injection system. Aesthetically, the new model is virtually the same as that of the previous production, but there are some small innovations, such as the five-pointed star shape of the wheels, which changes slightly due to the installation of Michelin TRX radial tires. The need to transfer the racing experience to road production has always been a target of inestimable importance for Ferrari, and the 308 GTBi is proof of this.



As already mentioned above, compared to the 308 GTB, the bodywork remains unchanged, except for some minor changes to the interior fittings. The 308 GTBi models reserved for their main market, the European one, are equipped with a tubular frame with internal reference number F 106 BB 100.


Disc brakes, independent suspension with wishbones, coil springs and hydraulic shock absorbers are present on all wheels, in addition to the front and rear anti-roll bar. All the prototypes will be numbered with the odd number sequence, typical of road Ferraris.


The model is available in both left-hand drive and right-hand drive, and production will officially start in 1980, ending two years later. In total, four hundred and ninety-four units will be built, with chassis numbers from 31.327 to 43.059.



The aluminum V8 engine, mounted transversely on the 308 GTBi, was essentially derived from the same design seen in the 308 GTB models, with the great novelty that it consists of an injection system, which now takes the place of the battery with four double carburettors body. This is an engine having a 90° V configuration, with double overhead camshafts per bank of cylinders, while the camshafts are driven by a toothed belt.


The total displacement is 2,926 cm³, with bore and stroke equal to 81x71 millimeters, while the internal reference for cars destined for the European market is F 106 BB 000. The drive unit contains the five-speed gearbox in a single block. synchronized, located at the bottom, just behind the engine oil pan.



Both the gearbox and the final ratio have been adapted to the new characteristics of the Bosch K Jetronic injection engine.


The Marelli MED 803A Digiplex electronic ignition incorporates coil, distributor and ignition module for each bank of cylinders. On cars destined for the European market, the declared power reaches 214 horsepower, while on the specimens reserved for the American market, however, these are only 205, since the anti-pollution devices installed cause a reduction in the power supplied.


As for the bodywork, the interior fittings also remain almost identical to the 308 GTB: the main difference can be seen in the leather-covered sports seats, which have different stitching compared to the previous model, while the main instrument panel maintains its location in a group protected by an eyelid located in front of the pilot.



Entry into official production The clock and the oil thermometer are moved to a panel positioned in the center of the console, to make them more visible than the previous position, located in the lower left part of the dashboard.


The design of the steering wheel also undergoes a change: now the spokes are in satin black, with longitudinal oblong holes. The sectored shift lever is located in the center of the console, as in the 308 GTBi, next to the ashtray, near the handbrake and service switches.


DATA SHEET

Engine


Rear engine, transverse, 8V 90°

Bore and stroke 81x71 mm

Unit displacement 365.86 cm³

Total displacement 2926.90 cm³

Compression ratio 8.8:1

Maximum power 157 kW (214 hp) at 6600 rpm

Specific power 73 hp / liter

Maximum torque 243 Nm (24.8 kgm) at 4600 rpm

Double shaft distribution, two valves per cylinder

Bosch K-Jetronic injection power supply

Mono ignition, electronic

Wet sump lubrication

Single plate clutch


Frame


Tubular steel frame

Independent front suspension, wishbones, coil springs, telescopic shock absorbers, stabilizer bar

Independent rear suspension, transverse wishbones, coil springs, telescopic shock absorbers, stabilizer bar

Disk brakes

Five-speed gearbox plus reverse

Steering pinion and rack

Fuel tank capacity 74 liters

Front tires 205/70 VR 14

Rear tires 205/70 VR 14

Car body


Body type Berlinetta, two seats

Length 4230 mm

Width 1720 mm

Height 1120 mm

Wheelbase 2340 mm

Front track 1460 mm

Rear track 1460 mm

Weight 1286 kg empty

Performance


Maximum speed 240 km/h

Simone Pietro Zazza

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