This is original, contemporary technical data, including key differences:
ENGINE
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Capacity
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1558 cc (95.1cu in)
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Type
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Twin overhead camshaft
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No of cylinders
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4
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Bore
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82.55mm
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Stroke
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72.7mm
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Compression ratio
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10.3:1 (9.5:1 Federal)
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Firing order
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1-3-4-2 (No 1 at timing end)
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Oil pressure (hot)
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35/40lbs.sq. in
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Distributor contact breaker gap
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.014/.016in (.35/.40mm)
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Performance
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Max BHP (net) @ rpm
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126 @ 6500
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Emission
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113 @ 6500
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Max torque @ rpm
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113 lbs ft (15.622kg m) @ 5500
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Cylinder head identification
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N or H (S Federal)
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Cylinder head depth
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4.598/4.603 in (11.68/11.69 cm)
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Max permissible metal removal
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.010 in (.254mm)
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Valve timing
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Inlet opens
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26º BTDC
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Inlet closes
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66º ABDC
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Exhaust opens
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66º BBDC
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Exhaust closes
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26º ATDC
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Valve head diameter, inlet
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1.560/1.566 in (39.624/39.776 mm)
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Weber Carburettor 40 DCOE 31
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Choke
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33mm
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Main jet
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120
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Air corrector jet
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155
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Accelerator pump jet
|
35
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Dellorto Carburettor DHLA 40
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|
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Choke
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33mm
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Main jet
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120 (135 European emission)
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Main air corrector
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130 (200 European emission)
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Accelerator pump jet
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35
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Idling jet
|
50.02 (47L European emission)
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Starter jet
|
70
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Needle valve
|
150.33
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Air trumpet length
|
42mm
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Front – part number
|
Q026 S 0710W
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Rear – part number
|
Q026 S 0711W
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Ignition timing (static)
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|
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Weber & Dellorto carburettors
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12º BTDC
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Zenith-Stromberg (Federal)
|
12º BTDC
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Zenith-Stromberg (other territories)
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9º BTDC
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Sparking plugs - Type
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|
Weber & Dellorto carburettors
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Champion N7Y
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Zenith-Stromberg (Federal)
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Autolite AG.32
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Zenith-Stromberg (Federal above 85 mph)
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Champion N7Y
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Zenith-Stromberg (other territories)
|
Champion N7Y
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Sparking plugs - Gap
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Non-exhaust emission
|
.020/.023in (.508/.584mm)
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Exhaust emission
|
.025in (.635mm)
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Valve clearances
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Inlet
|
.005/.007in (.127/.177mm)
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Exhaust
|
.009/.011in (.228/.279)
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GEARBOX (TRANSMISSION)
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Gearbox ratios (synchromesh on all forward gears)
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Top
|
1.000
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Third
|
1.397
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Second
|
2.010
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First
|
2.972
|
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Reverse
|
3.324
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Rear axle ratio
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3.55 or 3.77
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Road speed per 1000 rpm in top
|
|
|
3.77 final drive
|
17.62 mph (28.35 kph)
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3.55 final drive
|
18.50 mph (29.77 kph)
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FRONT SUSPENSION
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|
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Front wheel toe-in
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3/16th in (4.8mm) to 1/16th in (1.6mm)
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Camber angle
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0º to + 1º
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Castor angle
|
3º to +/- 30º
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Swivel pin inclination
|
9º to +/- 30º
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REAR SUSPENSION
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|
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Rear wheel toe-in
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3/16th in (4.8mm) to zero
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Camber angle
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1º to 0º
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WHEELS AND TYRES
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|
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Wheels - Type
|
Pressed steel Lotus knock -on
|
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Size
|
4 ½ J
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Tyres
|
|
|
|
Firestone F100 or Cavallino Sport 200
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Goodyear G800
|
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Dunlop SP Sport
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Size
|
155x13 (80 Profile)
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Pressure (cold) – at speeds below 100mph
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|
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Front
|
18lbs sq in (1.27 kg cm)
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Rear
|
23lbs sq in (1.62 kg cm)
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|
Pressure (cold) – sustained speed over 100mph
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|
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Front
|
24lbs sq in (1.69 kg cm)
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|
Rear
|
29lbs sq in (2.04 kg cm)
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|
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DIMENSIONS
|
|
|
Wheelbase
|
84in (213.4cm)
|
|
Track (at wheel hub)
|
|
|
Front
|
47 3/32in (119.6cm)
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Rear
|
47 1/16in (119.5cm)
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Overall
|
|
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Length
|
145in (368.3cm)
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Width
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56in (142.2cm)
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Height
|
|
|
Coupe
|
46 1/2in (118.0cm)
|
|
Convertible
|
45 1/2in (115.6cm)
|
|
Design ground clearance
|
6in (15.2cm)
|
|
Turning circle
|
33ft 6in (10.2m)
|
|
Average kerb weight (unladen)
|
|
|
Coupe
|
1550lbs (703kg)
|
|
Convertible
|
1540lbs (698.5kg)
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|
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CAPACITIES
|
|
|
Fuel tank
|
9 ¼ gallons (11 US galls, 42 litres)
|
|
Engine (with filter) oil
|
7 ½ pints (9 US pints, 4 litres)
|
|
Gearbox oil
|
1 ¾ pints (2.1 US pints, .99 litres)
|
|
Rear axle oil
|
2 pints (2.4 US pints, 1.2 litres)
|
|
Cooling system (with heater)
|
14 pints (16.8 US pints, 7.9 litres)
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Battery (negative earth)
|
12 volt 39 amp hr
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SERVICING
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|
|
First after sales service
|
500 miles (800 km)
|
|
A service
|
3000 miles (5000 km)
|
|
B service
|
6000 miles (10,000 km)
|
|
A service
|
9000 miles (15000 km)
|
|
C service
|
12000 miles (20,000 km)
|
|
And so on
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