LOTUS EUROPA
Workshop Manual
LOTUS CARS LIMITED
Norwich Norfolk, Nor. 92W England
Telephone: Wymohdham 3411. Cables: Lotus. NORWICH Telex: 97401
Part No A046T0327Z
August 1972 ©
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CONTENTS
Technical Data
Chassis
Page 9
A
B
Body
Front Suspension
Rear Suspension
Engine
C
D
E
Transmission
F
Hubs, Wheels and Tyres
Steering
G
H
J
Brakes
Cooling System
Fuel System
K
L
Electrical Equipment
Lubrication and Maintenance
Heating and Ventilation
Clutch
M
O
P
Q
S
Exhaust System
3
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INTRODUCTION
This Workshop Manual, which is in loose-leaf form for easy amendment, has been compiled to assist Lotus
Dealers throughout the world in the efficient repair and maintenance of the Lotus Europa models.
The various units and systems of the vehicle are dealt with in sections which are listed on page 5, each
being distinguished by a reference letter, this letter being the same as is used in other service publications (i.e.,
A -- chassis in Parts Lists and in the Labour Schedule). Each section thus referred to opens with a contents page
so that any particular operation can be easily located.
Service Information
Design changes, product improvements or changes in procedure subsequent to the publishing of this
manual are given in Service/Parts Bulletins, which are issued regularly to all authorised Lotus Dealers. Should
existing instructions be affected or additional information be needed, new pages to this manual will be issued to
Lotus Dealers when convenient.
To ensure the manual is kept up-to-date, write the Bulletin number, the section and page number it
affects and the subject matter in the space provided on page 8.
Technical Data
Comprehensive information regarding dimensions, tolerances, weights and torque loading figures of all
nuts and bolts are given on page commencing 9.
Recommended Lubrication and Maintenance
Attention is drawn to Section 'O' of this manual for the Factory approved recommended lubricants and
intervals of Periodical Maintenance.
Frost Precautions
Attention is drawn to the recommendations given in Section 'K' (Cooling System) of this manual on the
importance of taking proper precautions against damage by frost.
Paint and Body Protection
When work is carried out on any part of the car where damage could be caused to the paint and body, i.e.
working on the engine, or removing the windscreen, it is recommended that body protection covers be used.
4
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SECTION CHECK LIST
The number of pages in each Section is correct at: November 1971.
Section
Description
Number of Pages
TECHNICAL DATA
20
9
A
B
C
D
E
F
CHASSIS
BODY
40
18
13
63
45
9
FRONT SUSPENSION
REAR SUSPENS ION
ENGINE
TRANSMISSION
G
H
J
WHEELS, HUBS AND TYRES
STEERING
13
22
10
34
56
13
5
BRAKI NG SYSTEM
COOLING SYSTEM
FUEL SYSTEM
K
L
M
O
P
ELECTRICAL EQUIPMENT
LUBRICATIONS AND MAINTENANCE
HEATING AND VENTILATION
CLUTCH
Q
S
10
4
EXHAUST SYSTEM
5
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SERVICE BULLETIN RECORD
To ensure that the information contained in the manual is up-to-date, Lotus Dealers are asked, when they
receive them, to record in the columns below, the bulletin numbers with their subjects and the section and page
number affected.
If reference is then made to these columns before turning to the appropriate section, it will be seen
immediately if any amendment subsequent to the publishing of the manual is applicable.
6
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VEHICLE IDENTIFICATION (Chassis Numbering)
Commencing at the 1st of January 1970, a new format has been used for Vehicle Identification.
An example of a new chassis number is given below, together with the full identification breakdown.
7001.010001P Both chassis and body numbers being the same
7001
Denotes year and month of manufacture (1970, January)
Denotes the production batch
01
0001
Denotes the chassis number
Denotes the model
P
As there are at present 16 different model types, the following codes will be used for model
identification.
Elan STD
Coupe
Coupe
G. Britain & N. Ireland
Export
A
B
C
D
E
F
Elan STD
Elan STD
Elan STD
Elan S/E
Convertible G. Britain & N. Ireland
Convertible Export
Coupe
Coupe
G. Britain & N. Ireland
Export
Elan S/E
Elan S/E
Convertible G. Britain & N. Ireland
Convertible Export
G
H
J
Elan S/E
Elan Federal
Elan Federal
Elan +2'S'
Elan +2'S'
Elan +2'S' Federal
Europa
Coupe
Convertible Export
G. Britain & N. Ireland
Export
K
L
M
N
P
Export
Export
G. Britain & N. Ireland
Export
Europa
Q
R
Europa Federal
Export
7
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TECHNICAL DATA
I NDEX
Description
Dimensions
Capacities
Engine:
Page
9
9
General
9
Performance
Cylinder Head
Camshaft
9
10
10
11
11
11
11
12
Crankshaft
Connecting Rod
Gudgeon (Piston) Pin
Piston
Lubrication
Fuel System:
Pump
Air Cleaner
Carburetters
12
12
12
Ignition System:
Ignition Timing
Sparking Plugs
Distributor
13
13
13
13
14
Cooling System
Clutch
Transmission:
Bearings
Adjustment
Ratios
Speedometer Gears
Overall Ratios
Front Suspension
Steering
Rear Suspension
Brakes
14
14
14
14
14
15
15
15
15
16
Wheels & Tyres
Electrical Equipment:
Battery
16
16
16
16
17
Fuses
Alternator
Starter
Lamp Bulbs
Additional Information:
Ignition Distributor (Exhaust Emission)
Torque Loading Figures
17
18
8
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TECHNICAL DATA
Above image from Motor Magazine 6 Sep 1969. [2]
DIMENSIONS
Wheelbase
Track (at wheel hub) - Front
- Rear
91 in. (231 1 cm.)
53 in. (134.6 cm.)
53 in. (134.6 cm.)
157 ¼in. (399.4 cm.)
64½ in. (163.8 cm.)
42½ in. (107.9 cm.)
6 ½ in. (16.5 cm.)
44 ft. (13.4 m.)
Overall
- Length
-Width
- Height
Ground clearance (design)
Turning circle
Kerb weight (unladen)
- Series I
- Series II
1350 lbs. (612 kg.)
1566 lbs. (710 kg.)
CAPACITIES
Engine sump (including filter)
Transmission
Coolant (with heater)
Fuel
7½ pints (4 litres; 9 U.S. pints)
3 pints (1.75 litres; 3.6 U.S. pints)
18 pints (10.3 litres: 21.6 U.S. pints)
6 gallons (27 litres; 7.2 U.S. gallons)
ENGINE
General
Number of cylinders
4
Capacity
Stroke
Bore
- Non Exhaust Emission
89.7 cu. in. (1470 cc.)
95.5 cu. in. (1565 cc.)
3.189 in. (81 mm.)
3.307 in. (84 mm.)
2.992 in. (76 mm.)
3.032 in. (77 mm.)
10.25:1
- Exhaust Emission
-Non Exhaust Emission
- Exhaust Emission
- Non Exhaust Emission
- Exhaust Emission
Compression ratio (all)
PERFORMANCE
Max. BHP @ r.p.m. - Non Exhaust Emission
- Exhaust Emission
Max. Torque @ r.p.m. (all)
Road speed per 1,000 r .p .m. in top gear
82 @ 6,000
80 @ 6,000
79 lbs.ft. (10.92 kg.m.) @ 4,000
17.7 m.p.h. (28.5 k.p.h.)
9
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Cylinder Head
Material
Aluminium
Valve timing - Inlet opens
- Inlet closes
35° B.T.D.C.
65° A.B.D.C.
- Exhaust opens
65° B.B.D.C.
- Exhaust closes
35° A.T.D.C.
Angle of valve seats and faces
Valves - Head diameter
45°
- Inlet
1.476 in. (37.5 mm.)
1.220 in. (31 mm.)
.315 in. (8 mm.)
.315 in. (8 mm.)
.0010/.0018 in. (.025/.045 mm.)
.0016/.0024 in. (.040/.060 mm.)
.008 in. (.20 mm.)
.010 in. (.25 mm.)
Helical, double
- Exhaust
- Inlet
- Stem diameter
- Exhaust
- Inlet
- Stem clearance in guide
- Clearance (cold)
- Exhaust
- Inlet
- Exhaust
Valve springs - Type
- Free length
- Inner
- Outer
- Inlet
1.492 in. (37.89 mm.)
1.929 in. (49 mm.)
1.968 in. (50 mm.)
1.968 in. (50 mm.)
.472 in. (12 mm.)
Valve guides - Length
- Exhaust
- Fitted height above head
Camshaft
Number and type of bearings
Journal diameter
Bearing running clearance
End float
4, white metal
1.653 in. (42 mm.)
.001/.0029 in. (.025/.075 mm.)
.002/.0047 in. (.05/. 12 mm.)
.473 in. (12 mm.)
.480 in. (12.2 mm.)
Chain
Tappets
- Standard
- Oversize
Drive
- Type
- Number of pitches
- Length (of pitch)
- Width (of pitch)
72
.375 in. (9.525 mm.)
.225 in. (5.72 mm.)
10
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Crankshaft
Diameter
- Main journals
- Crankpin
2.158 in. (54.8 mm.)
1.890 in. (48 mm.)
End float
Bearings
- Dimension
- Controlled by
- Number
.002/.009 in. (.05/.23 mm.)
Thrust washers on centre main bearing
5
- Type
Aluminium lead, thin wall
.0015/.0031 in. (.038/.079 mm.)
.02 in, (.50 mm.)
- Running clearance
Maximum undersize for regrind
Connecting Rod
Type
'H' section
Material
Steel forging
Distance between centres
5.363 in. (13.62 cm.)
Aluminium Lead, thin wall
.0007/.0028 in. (.017/.058 mm.) [1]
.012/.022 in. (.310/.572 mm.)
Bearings
- Type
- Running clearance
- Side clearance
Gudgeon (Piston) Pin
Location
Force fit in connecting rod
.787 in. (20 ram.)
Diameter
Class of fit
- In piston
- In connecting rod
.0001/.0003 in. (.003/.009 mm.)
.0007/.0015 in. (.020/.041 mm.)
Piston
Type
Solid skirt
Material
Aluminium
No. of rings - Compression
- Oil control
2
1
Piston clearance in cylinder liner
Piston rings:
Matched piston and liner sets
Gap in liner (fitted) -Compression
- Oil control
.009/.015 in. (.25/.40mm.)
.009/.015 in. (.25/.40 mm.)
.0019/.0029 in. (.05/.075 mm.)
.0005/.0023 in. (.015/.06 mm.)
.078 in. (2 mm.)
Groove clearance
- Compression
- Oil control
- Compression
- Oil control
Width
.157 in. (4 mm.)
11
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Lubrication System
Pump - Type
- Drive
Eccentric rotor
Skewgear from camshaft
See Section 'E' (Engine)
30 lbs.in.sq. (2. kg.cm.sq.)
Full - flow ('throw away' canister)
- Inner to outer rotor clearance
Normal pressure (hot) @ 2,000 r.p.m.
Filter
FUEL SYSTEM
Pump operation
Mechanical
Air cleaner type
Paper element (dry)
Manual
Choke control
Carburetter - Non Exhaust Emission:
Type
Solex 35 DIDSA 2 (twin choke)
900/1,000 r.p.m.
Slow running speed
Primary
26
Secondary
26
Choke
Main jet
145
135
40
140
Air correction jet
Accelerator pump jet
Power jet
150
Nil
Nil
80/270
32
Inner venturi
28
Carburetter - Exhaust Emission:
Type
Solex 26 - 32 DIDSA 5 (twin choke)
1,000 +- 50 r.p.m.
Slow running speed
Primary
23.5
120
Secondary
27
Choke
Main jet
142.5
125
Air correction jet
Slow running jet
IGNITION SYSTEM
Type
125
60
95
Coil and distributor
1,3,4,2
Firing order
No. 1 cylinder
Ignition advance control
Nearest to clutch
Centrifugal
12
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Ignition timing (static)
Non Exhaust Emission
Exhaust Emission
4° B.T.D.C.
T.D.C.
Coil
Sparking plugs
Ducellier 2765 A
Marchal 34 HS
- Type*
- Gap
.023 in. (.584 mm.)
*Alternatively, Champion N4, Champion NTY or Autolite AG22 may be used in all engines with a points gap
of .023 in. (.584 mm.).
Distributor
Type
Ducellier 4 cylinder
Skew gear from camshaft
Anti-clockwise
Drive
Direction of rotation (from above)
Contact breaker gap
Cam dwell angle
.016/.019 in. (.40/.50 mm.)
61° +- 3°
Firing angles
0°, 90°, 180°, 270° +- 1°
Centrifugal advance (Non Exhaust Emission):
Distributor
Distributor
r.p.m.
degrees B.T.D.C.
Below 550
No advance
7.8
920
1,000
8.0
2,000
3,000
13.0
18.0
Vacuum advance (Non Exhaust Emission):
Distributor
Vacuum
degrees B.T.D.C.
Hg. inches
1.5
3.937
4.6
7.874
6.5
7.0
11.811
15.748
COOLI NG SYSTEM
Type
Centrifugal pump and fan
7 lbs .in .sq. (.49 kg.cm .sq .)
68° C.
Radiator cap relief valve
Thermostat nominal opening temperature
Water pump belt tension (at longest run)
Alternator belt tension (at longest run)
09375/.15625 in. (2.3812./3.9687 mm.)
.28125/.375 in. (7.1437/9.525 mm.)
13
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CLUTCH
Make and type
Ferodo 200 D, diaphragm spring
Cable
Operation
Driven plate diameter
Clutch assembly adjustment
Free movement at withdrawal lever
7.875 in. (20 cm.)
See Section 'Q' (Clutch)
.078/.125 in. (2/3 mm.)
TRANSMISSION
Type
4 forward speeds, all synchromesh and reverse
Taper rollers
Bearings
- Mainshaft
- Secondary gear cluster
Taper rollers
Bearings adjustment
See Section 'F' (Transmission)
Gear ratios
- Top
-3rd.
1.03:1
1.48:1
2.25:1
3.61:1
3.08:1
-2nd.
- 1st.
-Reverse
Final drive:
Type
Hypoid gear J
Taper rollers
Taper rollers
Bearings
- Pinion
- Diff./crown wheel assy.
Bearings adjustment:
Pinion bearing pre-load
Crown wheel/pinion backlash
See Section 'F' (Transmission)
.005/.010 in. (.127/.254 mm.)
Number of teeth
- Crown wheel
- Pinion
32
9
Final drive ratio
3.56:1
Speedometer gears:
Driving Gear
Driven Gear
46 F 6108, 12 teeth
Blue
46 F 6049, 6 teeth
Pink
Overall ratios - Top
3.666:1
5.268:1
8.010:1
12.851:1
10.964:1
- 3rd.
- 2nd.
- 1st.
- Reverse
14
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FRONT SUSPENSION
Type
Independent
Spring - Number of coils
-Wire diameter
17
.348 in. (8.83 mm.)
12.75 in. (32.38 cm.)
7.75 in. (19.68 cm.)
- Length
- Free
- Fitted
- Rate
Front hub end float
STEERING
Type
100 lbs.in. (1.15 kg.m.)
.002/.004 in. (.05/.10 mm.)
Rack and pinion
Steering angles
- Camber
0° to +- 30'
- Castor
3° +- 30'
- Swivel pin (kpi)
9° +- 30'
Toe - in
3/16 in. (4.76 mm.) to 1/16 in. (1.6 mm.)
6t in. (16.5 cm.) ground clearance
at bottom of chassis closing plate.
Condition for checking toe - in
REAR SUSPENSION
Type
Independent
Spring
- Number of coils
- Wire diameter
19½
.329 in. (8.35 mm.)
16.2 in. (41.15 cm.)
10.4 in. (26.42 cm.)
72 lbs. in. (.83 kg. m.)
0° to 2° Negative
3/16 in. (4.76 mm.) to Zero
- Length
- Free
- Fitted
- Rate
Wheel camber
Toe - in
BRAKES
Make and type
Front brakes - Disc diameter
Girling hydraulic (servo optional)
9.75 in. (24.76 cm.)
- Pads material
Ferodo DS.31
Total disc run out
.004 in. (.10 mm.)
Rear brakes - Drum dia. and width
- Lining material
8 in. (20.3 cm.) x 1.5 in. (3.8 cm.)
Don. 242
Handbrake type
Mechanical, on rear only
15
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WHEELS AND TYRES
Wheel
- Type
- Size
Pressed steel bolt on
4½ J
Tyres*
Tyres*
- Type
- Size
Firestone F.100 tubeless or,
Dunlop SP Sport with tubes.
155 x 13
*If inner tubes are fitted, it is essential that these are of the
correct type for radial ply tyres.
Tyres
- Pressure (cold):
At speeds BELOW At sustained speeds
100 mph (160 kph) ABOVE 100 mph (160 kph)
- Front
18 lbs.in.sq.
24 lbs.in.sq.
(1.27 kg.cm.sq .)
28 lbs.in.sq.
(1.69 kg.cm.sq.)
34 lbs.in.sq
- Rear
(1.97 kg.cm.sq.)
(2.39 kg,cm.sq.)
ELECTRICAL EQUIPMENT
Battery
Type
Exide 6 VTA 29 L
39 amp.hr.
Capacity @ 20 hr. rating
Voltage and polarity
Fuses
12 volt negative earth
Quantity and rating
Alternator
2, 35 amp.
Type
Sev - Motorola A. 1230
12
Nominal system voltage
Charging voltage
Maximum output (hot)
Control box type
Field coil resistance
13.2
30 amps. @ 3,000 r.p.m.
Sev - Motorola E.144
5.2 +- .2 ohms. @ 25 C. measured
across slip rings
Starter
Type
Drive
Paris - Rhone D.8 E 49
Pre - engaged
Lock torque
8 lbs.ft. (1.1 kg.m.) @ 355 amps.
16
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Lamp Bulbs (all 12 volt)
Headlamp - RHD, LHD
410 (45/40W) with 989 (6W) pilot
411 (45/40W) with 989 (6W) pilot
Sealed beam unit
382 (21W)
- France
- North America
Front and rear indicators
Indicator repeater
501 (5W capless)
380 (21/6W)
Stop and tall lamps
Rear number plate lamp
Reverse lamp - Up to 46/0541
- From 46/0542
254 (6W festoon)
382 (21W)
273 (21W festoon)
254 (6W festoon)
987 (2.4W)
Interior lamp
Panel (instrument) lamps
Warning lamps
987 (2.4W)
ADDITIONAL INFORMATION
Distributor Centrifugal Advance (Exhaust Emission):
Distributor
r.p.m,
Below 550
800
Distributor
degrees B.T.D.C.
No advance
2.5
1,000
10.5
1,250
11.5
1,500
13.0
1,750
14.5
2,000
15.5
2,250
16.5
2,400
17.0 Maximum advance
Distributor Vacuum Advance (Exhaust Emission):
Distributor
Vacuum
degrees B .T.D.C.
Hg. milllmetres
1.3
3.3
4.5
5.6
6.5
7.0
100
150
200
250
300
350 Maximum advance
17
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TORQUE LOADING FIGURES
lbs .ft.
ENGINE
kg.m.
Cylinder head - tighten cold (See also Section ' E')
Rocker arm pillar
54 - 60
15 - 20
45
7.46 - 8.29
2.07 - 2.76
6.22
Crankshaft
- Main bearing caps
- Cone
30
4.14
- Sprocket
45
6.22
Flywheel
Oil pump
40
5.53
- To cylinder block
- Strainer flange
9 - 12
16 - 20
10 - 20
1.25 - 1.65
2.25 - 2.75
1.38 - 2.76
Manifold to cylinder head
CLUTCH
Clutch assembly to flywheel
TRANSMI SSION
25
3.45
Gearbox casing (halves)
- 7 mm. bolts
- 8 mm. bolts
- 10 mm. bolts
- 11mm. bolts
15
2.07
20
2.75
Differential case to crown wheel
45
6.22
65-80
15
8.98-11.06
2.07
Differential bearing adjusting nuts
Pinion bearing nut
85
11.75
Speedometer drive worm
Reverse selector pivot
Side cover plates
75 - 85
20
10.36 - 11.75
2.75
15
2.07
FRONT SUSPENSION AND STEERING
Stub axle retaining nut
65 - 75
38 - 42
12 - 15
35
8.98 - 10.36
5.25 - 5.80
1.65 - 2.07
4.83
Ball joint
- To vertical link
- To upper wishbone
- To trunnion*
Lower wishbone
- To damper*
50 - 60
50 - 60
22 - 27
22 - 27
26 - 28
50
6.91 - 8.29
6.91 - 8.29
3.04 - 3.73
3.04 - 3.73
3.59 - 3.87
6.91
Inner wishbone retaining nut*
Caliper mounting plate to hub
Steering arm to vertical link
Steering tie-rod ball joint
Steering tie-rod adaptor
Steering column impact clamp
26 - 32
3.59 - 4.42
* Tighten with suspension in static condition
18
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REAR SUSPENSION
lbs.ft.
kg.m.
Lower link pivot bracket
18 -23
2.48 - 3.18
HUBS
Brake disc to hub
Front hub spindle nut *
22 - 27
5 - 6
3.04 - 3.73
.69 - .83
Rear hub retaining nut **
150
20.7
*Tighten nuts to this torque loading while rotating hub to ensure
bedding of taper rollers. Slacken nut one 'flat', then insert split pin.
** Assemble with Loctite 'AV'. A rotational free play NOT EXCEEDING
.005 in. (.127 mm.) between hub and shaft measured at the wheel stud
should be used for LEFT - HAND hubs.
BRAKE HYDRAULIC SYSTEM CONNECTIONS
3/8 in. UNF female (bundy and hose connections)
3/8 in. UNF male (bundy to master cylinder,
multi-ways, etc.)
8 - 10
1.10 - 1.38
5 - 7
.69 -.96
7/16 in. UNF male
7 - 10.5
.96 - 1.45
3/8 in. bore servo bundy (5/8 in.UNF male)
Stop lamp switch
14 - 21
12 - 15
12 - 15
12 - 14
1.93 - 2.90
1.65 - 2.07
1.65 - 2.07
1.65 - 1.93
Brake hose to banjo
7/16in. UNF female (bundy to reservoir)
Torque Wrenches
Torque wrenches in daily use should be checked at intervals, not exceeding 3 months, to ensure that accuracy is
maintained.
GENERAL - NUTS AND BOLTS
1/4 in. UNF and UNC
5/16 in. UNF and UNC
5 - 7
12 - 15
.69 - .96
1.65 - 2.07
3/8 in. UNC
3/8 in. UNF
7/16 in. UNC
7/16 in. UNF
1/2 in. UNC
1/2 in. UNF
9/16 in. UNC
9/16 in, UNF
5/8 in. UNC
5/8 in. UNF
17 - 22
22 - 27
30 - 35
40 - 45
45 - 50
50 - 60
60 - 70
65 - 75
75 - 85
100 - 110
2.35 - 3.04
3.04 - 3.73
4.14 - 4.85
5.53 - 6.22
6.22 - 6.91
6.91 - 8.29
8.29 - 9.68
8.98 - 10.36
10.36 -11.75
13.82 - 15.20
Editors Notes:
[1] Page 11: Corrected .0228 to .0028. [JJ]
[2] Not in original manual. Added for clarification [JJ]
19
----------------------------------------------------------------------------------------Section Updated: 1/10/2008 6:49 AM at http://www.lotus-europa.com ----------------------------------------------------------------------------------------
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