Bentley Eight


Manufacturer	Bentley
Class	Luxury car
Production	1984 to 1992
Engine	411.9 cu in, 6,750 cc V8
Transmission	4-sp 4L80-E automatic
Wheelbase	120.47 in, 306 cm;
Length	209.05 in, 531 cm
Width	74.41 in, 189 cm
Height	58.66 in, 149 cm
Kerb weight	4,950 1b, 2,245 kg

The Bentley Eight was a luxury car built from 1984 to 1992.

History

The Bentley Eight was introduced, as a cheaper and more simply equipped version of the Mulsanne, offering The Eight as Bentley's "entry-level" from 1984 until 1992.With 4 doors and 5 seats distinguished mainly by a wire-mesh grille radiator instead of vertical slats on the Mulsanne, the Eight also had somewhat less equipment than the similar Mulsanne on which it was based but the Eight was offered at a significantly lower price than the regular Mulsanne The number of paint finishes possible as standard had also been reduced. This brought the introductory price to under the psychologically important £50,000 mark at the time of introduction, £6,000 less than the Mulsanne.

The large 4 stroke; 8 cylinders in Vee engine with 411.9 cu in, 6,750 cc only achieved a fuel consumption of 16.1 m/imp gal, 13.4 m/US gal.The Eight was only available with a short wheelbase. A firmer suspension offered slight handling improvements. The Eight was so popular that sales expanded from the original UK market to Europe and the United States. the UK version came fitted with 2 SU type HIF7 horizontal carburettors and dual exhaust system while the USA market to meet emission standards came fitted with exhaust emission control, exhaust gas recirculation, catalytic converter, Bosch K- Jetronic injection. Similar exhaust emission control also for Australia.

The Chassis has front and rear auxiliary frames the front suspension independent type lower wishbones, coil springs, anti-roll bar and telescopic dampers at the rear also independent, trailing arms, coil springs, auxiliary gas springs, anti-roll bar, automatic levelling control, telescopic dampers.

The Eight was introduced with more simple dashboard design. Fuel injection and anti-lock brakes were added in 1986, leather upholstery and power memory seats were added in 1987, and automatic ride height adjustment was added in 1990. In Britain, catalytic converters became optional in 1990 – although they had been available long before in markets where such were required. The three-speed automatic transmission

Bentley Eight 1984 to 1992

Technical

Bentley Eight Technical details and specifications (1984-1992)

ENGINE
location front
4 stroke; 8 cylinders in Vee
411.9 cu in, 6,750 cc (4.10 x 3.90 in, 104.1 x 99.1 mm)
compression ratio: 9: 1 (For USA only)8:1 compression ratio,
aluminium alloy block and head, cast iron wet liners
5 crankshaft bearings
valves: overhead, in line, slanted, push-rods and rockers, hydraulic tappets
cam-shafts: 1, at centre of Vee
lubrication: gear pump, full flow filter (cartridge)
oil: 16.5 imp pt, 19.9 US pt, 9.4 1
2 SU type HIF7 horizontal carburettors; ual exhaust system
fuel feed: Pierburg electric pump
sealed circuit cooling, expansion tank
cooling 8.5 imp pt, 34.2 US pt, 16.2 1
viscous coupling electric thermostatic fan.
(For USA only) exhaust emission control, exhaust gas recirculation, catalytic converter, Bosch K- Jetronic injection.
(For Australia only) exhaust emission control, exhaust gas recirculation.

TRANSMISSION
driving wheels: rear
gearbox: Turbo-Hydramatic 400 automatic transmission
hydraulic torque converter and planetary gears with 3 ratios
max ratio of converter at stall 2, possible manual selection
ratios: I rev 2; 2.500, Il 1.500, Ill 1,
gear lever location: column
final drive: hypoid bevel
axle ratio: 3.080

CHASSIS
type integral
front and rear auxiliary frames; front suspension: independent, lower wishbones, coil springs, anti-roll bar, telescopic dampers
rear: independent, trailing arms, coil springs, auxiliary gas springs, anti-roll bar, automatic levelling control, telescopic dampers.

STEERING
rack-and-pinion, servo
right- or left-hand drive
turns lock to lock: 3.25.

BRAKES
disc (diameter 11 in, 27.9 cm), front internal radial fins
dual circuit, servo
swept area: front 227 sq in, 1,464 sq cm
swept area: rear 286 sq in, 1,845 sq cm
swept area: total 513 sq in, 3,309 sq cm.

ELECTRICAL EQUIPMENT
12 V
68 Ah battery
90 A alternator
Lucas transistorized distributor
4 headlamps, 2 front and 2 rear fog lamps.

DIMENSIONS AND WEIGHT
wheel base: 120.47 in, 306 cm;
front and rear track: 60.63 in, 154 cm
length: 209.05 in, 531 cm
width: 74.41 in, 189 cm
height: 58.66 in, 149 cm
ground clearance: 6.50 in, 16.5 cm
weight: 4,950 1b, 2,245 kg
turning circle: 39 ft, 11.9 m
fuel tank: 23.5 imp gal, 28.2 US gal, 107 1.

© Motor car History

Service

Bentley Eight Maintenance and Service Guide (1984-1992)

Fuel type: 98 oct petrol
Engine oil change: 16.5 imp pt, 19.9 US pt, 9.4 1, SAE 20W-50, change every 6,000 miles, 9,700 km
Automatic transmission: 18.6 imp pt, 22.4 US pt, 10.6 1, Dexron, change every 24,000 miles, 38,600 km
Final drive: 4.5 imp pt, 5.3 US pt, 2.5 1, SAE 90 EP, change every 24,000 miles, 38,600 km
Power steering and automatic levelling control change every 20,000 miles, 32,000 km
Greasing: every 12,000 miles, 19,300 km, 5 points
Spark plug: Champion RN 14 Y
Valve timing: 26° 60° 68° 18°
Tyre pressure: front 24 psi, 1.7 atm, rear 28 psi, 2 atm.
Width of rims: 6'
Tyres: 235/70 HR x 15.
Carrying capacity: 1,014 1b, 460 kg;
Fuel consumption: 16.1 m/imp gal, 13.4 m/US gal, 17.5 1 x 100 km at 75 mph, 120 km/h.

© Motor car History