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Rolls Royce Logo

1951 4.6 (128 Hp) Automatic

Technical specifications and auto data, engine info, performance specs, dimensions

FULL CAR SPECIFICATIONS

GENERAL INFO

Select Units

Modification

4.6 (128 Hp) Automatic

Body Type

Sedan

Start of production

1951

End of production

1955

Powertrain

ICE

Fuel type

Petrol (Gasoline)

Fuel tank capacity

82 l 21.66 US gal
18.04 UK gal

Engine displacement

4566 cm³ 278.63 cu. In.

Power

128 hp

Drive Axle

Rear wheel drive

Top Speed

140 km/h 87 mph

Gearbox type

Automatic

Number of Gears

4

Kerb weight

1914 kg 4219.6 lbs

Length

5168 mm 203.46 in

Width

1778 mm 70 in

Doors

4

Seats

5

Wheel rims

6.5J x 16

FUEL CONSUMPTION

Economy

- Combined

20.2 l/100 km 11.64 US mpg
13.98 UK mpg

PERFORMANCE

Speed

- Top speed

140 km/h 87 mph

Acceleration

0 - 60 mph

16.2 sec

ENGINE SPECIFICATION

Powertrain

ICE

Fuel type

Petrol (Gasoline)

Fuel system

Carburettor

Engine Location

Front, Longitudinal

Turbine

none

Engine displacement

4566 cm³ 278.63 cu. In.

Power

128 hp

Number of cylinders

6

Valves per cylinder

2

Position of cylinders

Inline

Cylinder Bore

91.95 mm 3.62 in

Piston Stroke

114.3 mm 4.5 in

Compression ratio

6.75

Valvetrain

OHV

Engine oil capacity

9 l 9.54 US qt
7.92 UK qt

Coolant

18 l 19.08 US qt
15.84 UK qt

POWER-TO-WEIGHT RATIO (PWR)

Color Index

Dynamic Efficiency

low Performance

DIMENSIONS

Length

5168 mm 203.46 in

Width

1778 mm 70 in

Height

1670 mm 65.75 in

Wheelbase

3048 mm 120 in

Front track

1435 mm 56.5 in

Rear (Back) track

1485 mm 58.46 in

Ride height

191 mm 7.52 in

Turning diameter

12.5 m 41.01 ft

DRIVETRAIN, SUSPENSION & TIRES

Drive Axle

Rear wheel drive

Number of Gears

4

Brakes

- Front

Drum

- Rear

Drum

Steering type

Cone worm with recirculation balls

Suspension

- Front

Independent coil spring

- Rear

Leaf spring

Tire size

- Front

215/75 R16

- Rear

215/75 R16

Wheel rims

6.5J x 16

WEIGHTS & TRUNK SPACE

Kerb weight

1914 kg 4219.6 lbs

MODEL REVIEW
Rolls-Royce Silver Dawn 4.6 (128 Hp) Automatic is made in 1951 1952 1953 1954 1955