1959 Riley 4/68

The Riley 4/68 is a rear wheel drive motor car, with the engine positioned in the front, and a 4 door saloon bodyshell. Its 1.5 litre engine is a naturally aspirated, overhead valve, 4 cylinder unit that produces 66.5 bhp (67 PS/50 kW) of power at 5200 rpm, and maximum torque of 115 N·m (85 lb·ft/11.7 kgm) at 3300 rpm. A 4 speed manual gearbox transmits the power to the driven wheels. Claimed weight at the kerb is 1092 kg. The Riley 4/68 is said to be able to attain a top speed of 142 km/h or 88 mph.
Full specs

Body type
4 door sedan/saloon with 4/5 seats
Length
4534 mm
Weight
1092 kg
Engine type
naturally aspirated petrol
Engine size
1.5 litre
Cylinders
4, Straight
Power
67 PS / 66.5 bhp / 50 kW @ 5200 rpm
Torque
115 Nm / 85 ft.lb / 11.7 kgm @ 3300 rpm
Top speed
142 km/h / 88 mph

1959 Riley 4/68 specifications

1959 Riley 4/68 data
bodywork
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Body type	4/5 seater sedan/saloon
Number of doors	4
Designer
dimensions & weights
Wheelbase	2527 mm	99.5 inches
Track/tread (front)	1241 mm	48.9 inches
Track/tread (rear)	1267 mm	49.9 inches
Length	4534 mm	178.5 inches
Width	1613 mm	63.5 inches
Height	1518 mm	59.8 inches
Ground clearance	170 mm	6.7 inches
length:wheelbase ratio	1.79
Kerb weight	1092 kg	2407 lb
Weight distribution
fuel tank capacity	45.5 litres	10 [12] UK [US] gal.
aerodynamics
Drag coefficient
Frontal area
CdA
Powertrain
engine type	naturally aspirated petrol
Engine manufacturer	BMC
Engine code
Cylinders	Straight 4
Capacity	1.5 litre 1489 cc (90.864 cu in)
Bore × Stroke	73.03 × 88.9 mm 2.88 × 3.5 in
Bore/stroke ratio	0.82
Valve gear	overhead valve (OHV) 2 valves per cylinder 8 valves in total
maximum power output (gross)	67 PS (66.5 bhp) (50 kW) at 5200 rpm
maximum torque (gross)	115 Nm (85 ft·lb) (11.7 kgm) at 3300 rpm
Specific output (gross)	33.3 kW/litre 45.3 ps/litre 44.7 bhp/litre 0.73 bhp/cu in
Specific torque (gross)	77.23 Nm/litre 0.93 ft·lb/cu³
Engine construction
Lubrication
compression ratio	8.3:1
Fuel system	2 SU carbs
bmep (brake mean effective pressure)	970.5 kPa (140.8 psi)
Maximum RPM
crankshaft bearings
Engine coolant	Water
Unitary capacity	372.25 cc
Aspiration	Normal
Compressor	N/A
Intercooler	None
Catalytic converter	N
performance
Acceleration 0-80km/h (50mph)	12.9 s
Acceleration 0-60mph
Acceleration 0-100km/h
Acceleration 0-160km/h (100mph)
Standing quarter-mile	21.2 s
Standing kilometre
Maximum speed	142 km/h (88 mph)
Power-to-weight ratio	Higher is better 61.74 PS/tonne (1000 kg) 0.06 PS/kg 45.41 kW/tonne (1000 kg) 0.05 kW/kg 60.9 bhp/tonne (1000 kg) 0.06 bhp/kg 0.03 bhp/lb
Weight-to-power ratio	Lower is better 22.02 kg/kW 36.78 lb/bhp
fuel consumption
Fuel consumption
universal fuel consumption (calculated from the above)
litres/100km
km/litre
UK MPG
US MPG
Carbon dioxide emissions
Carbon dioxide emissions
Carfolio Calculated CO₂ ^?
VED band (UK)
CO₂ Effizienz (DE)
chassis
Engine position	front
Engine layout	longitudinal
Drive wheels	rear wheel drive
Torque split	N/A
Steering
turns lock-to-lock
Turning circle	11.40 m
Front suspension	I.W.CS.
Rear suspension	LA.SE.
Wheel size front
Wheel size rear
Tyres front
Tyres rear
Brakes F/R	Dr/Dr
Front brake diameter
Rear brake diameter
Braked area
Gearbox	4 speed manual
Top gear ratio	1
Final drive ratio	4.30
general
Carfolio.com ID	48950
Production total
Model code
RAC rating	13.2
Insurance classification	No information available
Tax band	No information available
1959 Riley 4/68 added 1996-11-10. Last modified 2013-02-28.