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600cc |
700cc |
750cc |
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ENGINE |
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Cylinder Head |
Aluminium alloy |
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Cylinder Block |
Aluminium alloy with cast iron liners |
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Cylinders |
4 in line with 3-bearing crankshaft |
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Bore and stroke |
55.88 mm x 60.96 mm |
60.45 mm x 60.96 mm |
62.50 mm x 60.96 mm |
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Cubic capacity |
598 cc (36.5 cu.in.) |
700 cc (42.72 cu.in.) |
748 cc (45.64 cu.in.) |
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Compression ratio |
8.45 : 1 |
8.4 : 1 |
Saloon, Estate - 8.5 : 1 |
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Valvegear |
Vertical overhead valves operated by push-rods |
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Carburation |
Solex B 28ZIC 2 carburetter, fed by mechanical AC pump from 6 gallon tank |
Zenith 30 IZ carburetter, fed by mechanical AC pump from 6 gallon tank |
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Ignition |
12-volt Lucas coil, centrifugal timing control |
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Lubrication |
AC by-pass filter and 5-pint sump |
Submerged eccentric rotor pump with external full flow filter. |
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Cooling |
Water cooling with pump, fan and thermostat, 7 pint (3.98 ltr.) water capacity (plus 1 pint if heater fitted) |
Water cooling with pump, fan and thermostat. 6 pint (3.41 ltr.) capacity |
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Electrical system |
12-volt 21 amp/hr battery charged by 264 watt generator |
12 volt negative earth. Lucas C40 generator. Lucas 15ACR alternator from chassis no. 941001 |
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Maximum power (net) |
28 bhp at 5,250 rpm |
31 bhp at 5,000 rpm |
34.95 bhp at 5,500 rpm |
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Maximum torque (net) |
31.25 lb. ft. at 3,000 rpm |
36 lb.ft. at 2000 rpm. |
38 lb.ft. at 3,000 rpm |
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Top gear ratio |
14.1 mph at 1,000 rpm |
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0 - 50 mph |
23.0 sec. |
15.7 sec. |
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Max speed |
64.5 mph |
66.14 mph |
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Consumption |
61.6 mpg at 35 mph |
54 mpg at 35 mph |
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TRANSMISSION |
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Clutch |
6 & 1/4in Borg and Beck, s.d.p. mechanically operated |
6.25in. Borg and Beck spring pressure plate assy. Mechanically operated. Hydraulically operated from chassis no. 941001 |
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Gearbox |
4-speed with direct-drive top and synchromesh on 2nd, 3rd and top gears. |
4-speed with direct drive top and synchromesh on all forward gears. |
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Overall ratios |
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Top |
1.000:1 |
1.000:1 |
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3rd |
1.454:1 |
1.320:1 |
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2nd |
2.461:1 |
2.04:1 |
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1st |
4.267:1 |
3.88:1 |
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Reverse |
5.493:1 |
3.25:1 |
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Propeller shaft |
Open Hardy Spicer or BRD with needle roller bearings. Later models had sealed bearings. |
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Final drive |
Spiral bevel 4.375 : 1 |
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CHASSIS |
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Construction |
Steel ladder chassis with separate glassfibre bodywork |
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Brakes |
Girling hydraulic drum brakes with 2 leading shoes on front |
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Brake dimensions |
Front drums 8in. dia. x 1.25 in. wide |
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Rear drums 7in. dia. x 1.25 in. wide |
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Brake area |
72.5 sq. in. of lining (38.75 sq. in. front plus 33.75 sq. in. rear) working on 117.8 sq. in. rubbed area of drums |
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Handbrake |
Lever type operating rear brakes mechanically |
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Front suspension |
Independent with coil springs and wishbones with Girling telescopic hydraulic dampers within coil springs |
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Rear suspension |
Live axle on semi-elliptic leaf springs and Girling telescopic dampers |
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Wheels and tyres |
Pressed-steel 4-stud wheels and 5.50-12 Goodyear tyres. Rim size : 3 1/2J |
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Steering |
Burman worm and nut. Steering wheel dia. 15.5 in., 3 turns lock to lock |
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Turning circle |
34 ft. (10.37m) |
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DIMENSIONS |
Saloon |
Estate |
Van |
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Length |
11 ft. 5 in. (3.79m) |
12 ft. (3.66m) |
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Width |
4 ft. 10 in. (1.47m) |
4 ft. 10 in. (1.47m) |
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Height |
4 ft. 8.5 in. (1.44m) |
4 ft. 7.5 in. (1.41m) |
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Wheelbase |
7 ft. 5 in. |
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Ground clearance |
5.5 in. (140mm) |
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Kerb weight |
1232 lb. (558.8kg) |
1330 lb. (603.3kg) |
1263 lb. (572.9kg) |
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