Lotus TURBO ESPRIT User manual

Publication Part No. A082T0327Z
@ Lotus Cars Ltd June 1986
This publication has been designed primarily for Lotus Dealers,
and will be updated by the issue of Service Bulletins to Lotus
Dealen when necessary.
Lotus policy
is one of continuous product improvement an
right
is reserved to alter specificatiom at any time with01
notice.
Whllst every care has been taken toensure correctness of
it Is impossible to guatuntee complete freedom from error!
or to accept liability arising from such erron or omissions
herein contained shall affect your statutory rights.

CONTENTS
TURBO ESPRIT h ESPRIT S3 (Prior '88 M.Y.)
Subject
Vehicle Identification
Technical
Data -. Engine - Esprit S3
- Engine - Turbo
- Vehicle
Body
- Paint Procedure
- Bodycare & Repair
- Body Fittings
Front Suspension
- Prior to '85 M.Y.
- '85 M.Y. onwards
Rear Suspension
Section
See overleaf
TDA
TDB
TDD
Engine EB
Engine Management
- USA Turbo, carburettor (Prior to '86 M.Y.) EMA
- Turbo HC, Dom/Exp '87 M.Y. onwards EMC
- Esprit HC, '87 M.Y. onwards EMD
Transmission FB
Steering
HB
Brakes - Prior to '85 M.Y.
- '85 M.Y. onwards
a
Cooling System
Fuel System
- Esprit S3
- Turbo, ~om/~xport
- USA Turbo, Carburettor
- USA Turbo, Fuel Injection (Bosch K Jetronic)
Electrical
- Esprit S3 & Turbo, Dom/~xport
- USA Turbo, Prior '86 M.Y.
- USA Turbo, '86 M.Y. onwards
Maintenance
& Lubrication - Esprit S3 & Turbo, Dom/Export
- USA Turbo
Heater & Air Conditioning
Clutch
Interior Trim

VEHICLE IDENTIFICATICN NCPMBER @. ',
The Vehicle Identification Number WIN) is stamped on a plate fixed to the
right or left hand front wheelarch inside the front luggage canpartment. This
number is repeated on the right hand side of the chassis front frame, visible
fran within the right hand front wheelarch.
. .
VI N Plate on wheelarch
VIN stamped on chassis
This number, together with the engine numkr (see TDA or TDB) should be
quoted in all enquiries regarding the vehicle.
There
are two variations of the VIN, one king for Danestic and export
markets other
than for the USA, which canplies with European Econanic Cmunity
(EEC) directives, and one for the USA which canplies with requirements laid
dm by the National Highway Traffic Safety Association (WSA).
The seventeen characters of the VIN are coded as follws:
1. =A VIN character 6:
501 = Basic Elite 521 = Basic Eclat 701 = Basic Esprit
502 = Elite A/C 522 = Eclat A/C 702 = Esprit A/C
503 = Elite A/C & PAS 523 = Eclat A/C & PAS 701 Ccmn = Esprit Cmunanerative
504
= Elite Auto 524 = Eclat Auto 702 Cm = Esprit Cm. A/C
A/C & PAS A/C & PAS
2.
Sexrate serial number sequences are used for the follming groups of
chassis mrket (character-12
1 ;
D
A, ErGr HrS
B,CiF,K
3.
For change point identification in Service Notes, Parts Lists and Service
Bulletins, the follming
VIN characters ONLY will be quoted;
Danestic & Export - 5,6,12,14 to 17
,
USA - 4,12,14 to 17
Example
A typical change point could be listed as folluws;
82
D 1100 (Danestic
Turbo 1100)
82q/~/G/H/S0341 (ExportTurbo0341)
F B/c/F/K 0265 (USA Turbo 0265
1
Note that three numbers are needed to identify the single change point due
to the different serial nmber sequences outlined in note 2.
If
a dash is used in place of the chassis mrket letter code (e.g.
'a
.82 - 0341 or F - 02651, this is the change point for.al1markets in that
serial numker sequence not otherwise listed.
- - - - - - - - -.
1992 1 0 1
-.

\
DCMESTIC & EXFORT
,a
2= 49 States (USA)
3= California
4= Sweden/
~ustralia/
Switzerland
5=
Japaii
6= 50 States (USA)
Engine Type
907= 2 Litre
910= 2.2
Turbo
912= 2.2 N/A
I
Manufacturer
1dktifier
SCC
123
J
Vehicle Type
079= Esprit S2
-
Year
&-80
B= 1981
C= 1982
D= 1983
E= 1984
FZ 1385
G= 1986
H= 1987
I= 1988
I
Serial Number
I
082= Tu?bo ESp
083= Elite S2
084= Eclat S2
085= Esprit S3
089= Excel
J
Mrket (Chassis)
*Australia
G=Exprt (hot)
B= 49 States RHD
( USA H= Export (hot)
C= California
LHD
D= Dcfnestic J= Japan
E;= Europe (cold)K= Canada &
F 50 States Puerto Rico
( USA L= Saudi ~rabia
S= Sweden
-
(also Daestic & Export up to serial nos.;
Elite i718 (Dan)
0236 (Exp), Eclat 1034 (Dan) 0205
(Exp), Esprit 0934 (Dan) 0.307 (Exp))
Model Year
/+ 1980 B= 1981 C= 1982 Market (Chassis
A= Australia H= I3mort
B= 49 States (hit
LHD
(USA) J= Japan
C= California K= Canada &
D= Danestic Puerto Rico
E= Europe (cold) L= Saudi
S 50 States Arabia .
( USA ) S= Sweden
G= Export ( hot
RHD
I series 1 1
A = Series 1
.a
B = Series 2
C = Series 3
Restr-
aint
Active
Serial
Number
4= 504/524/702 Cunn
5= 501 PAS/521 PAS
6= 501 Auto/521 Auto
1
Option Check Serial Number
1= 501/521/701 Diqit
2= 502/522/702 Market (Enqine)
3= 503/523/701 Ccmn Plant 1= Damestic
4=504/524/702
Cunn H=Hethel 2=49 States (USA)
5= 501 PAS/521 PAS 3= Cali.fornia
6= 501 Auto/521 Auto I 4= Swden/~ustral ia/
B = Eclat
C = Esprit
F 4 Turbo Esprit
I
7= 501 PAS ~uto/521 PAS Auto Swi
t zer land
8= 502 Auto/522 Auto 5= Japan
6= 50 States (USA)
DEC 1986

SECTION TD A'
TECHNICAL DATA
SECTIONTD A - ENGINE TYPE 9071912
Engine-Number
Engine Specification
Cylinder Head
Camshafts
& Valve Mechanism
Crankshaft
Main Bearing Configuration
Flywheel
Connecting
Rod
Gudgeon Pin
Piston
& Liner
lubrication
System
Dellorto Carburettors
Zenith Carburetton
Ignition System
Distributor & lgnition Timing
Cool
i ng Sys tern
Torque Loading Figures
0
APR 1987
Page 7
Page
-

Page 2 SECTION .TD A
Before commencing work on any Lotus engine, firstcheck the engine
number and prefix letters to establish the engine specification.
This
number is stamped on the right hand rear of the cylinder block,
above the starter motor, and
is duplicated onthe vehicle identification
plate fixed to either the right or left hand inner wheelarch under
the front bonnet.
I Example
For the purpose of clarification inthe TECHNICAL DATA SECTION ONLY,
a specification number
is allocated to various specifications as listed below.
In some countries, prefix letters may differ from those listed, inwhich case
reference should be made to the Lotus Distributor of that country for the
releventspecification.
TECHNICAL
DATA SECTION
SPEC. NO.
REMARKS
1974
.. .
FIRST! PREFIX
LmTER
(907)
D - Danestic Std.
G - Danestic A/C
J - Danestic A/C & PAS
(907
F - U.S.A. Std.
I - U.S.A. A/C
K - U.S.A. A/C & PAS
APR 1987
SECOND PREFIX
LETrER
Single Prefix
Letter hly.
Single Prefix
Letter Only.
U.S.A. 1974

SECTION TD A
Page 3
FIRST PREFIX
lJTmm3
(907
X - Danestic Std.
W - Danestic A/C
Y - Danestic PAS
L - Danestic A/C & PAS
AML - Danestic A/C, PAS
& Auto.
(907)
P
- U.S.A. Std.
N - U.S.A. A/C
Z - U.S.A. PAS
M - U.S.A. A/C & PAS
(907
)
C - Esprit
D
- Elite/Eclat
(907
)
A - Esprit
B - Elite/Eclat
(907)
G - Elite/Eclat
H - Esprit
SECOND PREFIX
LETTER
Single Prefix
Letter mly
.
Single Prefix
Letter Cnly
.
TECHNICAL
DATA SETI~
SPEC.
NO.
U.S.A. 1975
C
- Std.
D - A/C
z - PAS
L
- A/C & PAS
R
- Auto.
S - Auto. & A/C
T - Auto. & PAS
M
- Auto, A/C & PAS
Ct Dt ZtLt
RtStTtMt
as for Spec. 5
EUROPEAN
1976
- ' 80
Ct Dt ZrLr
Rt St TIMI
as for Spec. 5
(912
- Esprit
D
- Elite/Eclat/btcel
5
CALIFORNIA ' 76- ' 79
49-STATES '76-'77
J - Esprit
K - Elite/Eclat
6
49-STATES
1978-
' 80
;.
1
7
Rt St TIMI
as for Spec. 5
A
- H.C.
B - H.C. PAS
N - H. C. PAS & A/C
P - H.C. & A/C
Y - H.C. PAS & A/C
& Auto.
1980
CALIFORNIA
EUROPEAN
HIGH CDPRESSION
Excel 86 MY @tion
Esprit
Feb. 1987
1
10

Page 4
SECTION TD A
ENGINE
Max. rpm of engine
No,
of cylinders
Firingorder
Capacity
- type 907
- type 91 2
Stroke - type 907
- type 912
Bore (nominal)
Compression ratio
Compression pressure
~n~ine number location
69.2mm (2.72 in.)
76.2mm
(3.00 in.)
spec. 1,3,5 9.5
: 1
spec.2,4,6,7,8 8.4:1
spec.
9 9.44: 1
0
spec. 10 10.9 : 1
spec. 1,3,5,9 2
11
.2 - 12.6 bar (165 - 185 Ib/in )
spec. 2,4,6,7,8 10.2
- 11 .6 bar (150 - 170 lb/in2)
spec. 10 2
11.5
- 13.0bar (170 - 190 Ib/in )
Ontop of cylinder block adjacent
to starter mounting
Engine belt tensions
- Toothed timing belt, using Burroughs gauge part number
TOOOT0025J, 90
- 95 units cold (60~~/20~~) See Section EA -8.
( - Alternator 'V' belt 12 mm (0.5 in.) (& in.)
Talal movement
rnodamte
( - Compredsor 'V' be1 t
(
9mmt0.35in.) (3/8in.)
finger pressure I WC)
-.
on longest i - Power steering pump 12 mm (05 in)
be1
t run.
(j in.)
( 'V' be1 t
CYLINDER HEAD
Material Aluminium alloy
Gasket Steel
/ Asbestos
Combustion Chamber Depth (nos. 1
& 4) 12.32-1 2.57mm(0.485-0.500 in)
APR 1987

SECTION TD A
CAMSHAFTS AND VALVE TIMING
cam Type
Designation
Spec.No.
1 groove 1270" 10.350" (110' (red
I$II;-I
between
pulley
cam hsg.
plain
1 272" ( 0.34011 ( 110" 1 red
plain
2 groove
plain
777..
. .
444....
E;~ 1 ;let M.O.P.
degrees ATDC*
Lift
* All cams are symnetrical opening closing
VALVES
~arn
Pulley
Tirning
Dot
Angle of valve seats and faces
Head diameter - lnlet
- Exhaust
Stem diameter
- lnlet & Exhaust
Stem clearance inguide
- lnlet & exhaust
100"
1023"
1023"
104"
104"
Valve clearance (cold)
Spec. 1 . (ID' Cams) - lnlet
- Exhaust
Spec 2,3,4,5,6,7,8,9 - lnlet
1 b
- Exhaust
blue
yellw
yellw
green
green
Page 5
l3xhi3ust 1
M.0.P Cam
BTDC* Pulley
Timing
Dot
110" red
110° red
110" red
1023" yellow
110"
red
45O
35.47 - 35.65 mrn (1 .396 - 1 .404 in .)
30.73 -30.91 rnm (1 .210 - 1 .217 in.)
7.125 - 7.137 mm (0,2805 - 0.2810 in.
0.008 - 0.046 mm (0.0003 - 0.0018 in.
0.10 - 0.15 mm (0.004 - 0.006 in.)
0.20 - 0.25 mm (0.008 - 0.010 in.)
0.13 - 0.18 mm (0.005 - 0.007 in.)
0.25 - 0.31 mm (0.010 - 0.012 in.)
Valve
Seat lrserts
Bare in head:
S tanda rd
- Inlet
- Exhaust
37.235/37.260 mm . (1 .&/I .467 in. )
34.290/34.315 mm. (1.350/1 .351 in.)

Valve seat insert bore (cont .)
c 0.025 mm (0.001 in)
' - lnlet
- Exhaust
F 0.050 mm (0.002 in)
- Inlet
- Exhaust
F 0.127 mm (0.005 in)
- Inlet
- Exhaust
Outside diameter of seat
S tandard - Inlet
t- 0.025 mm (0.001 in)
t 0.050 mrn (0.002 in)
t 0.127mm (0.005 in)
dalve Springs
TY pe
- Exhaust
- lnlet
- Exhaust
- lnlet
- Exhaust
- lnlet
- Exhaust
37.260/37.285 mm. (1.467/1 .a8 in.)
34.315/34.340
mm. (1,351/1 .352 in .)
37.285/37.315 mm. (1 .468/1 .a9 in.)
34. 340/34.365
mm . (1 .352/l ,353 in .)
37.365/37.390 mm. (1.471/1 .472 in.)
34.415/34.440
mm. (1 .355/1 .356 in.)
37.325/37.350
mm. (1.4695/1 .4705 in .)
-:
34.380/34.405 mm . (1.3535/1 .3545 in .)
37.350/37.375 mm . (1.4705/1 .4715 in . )
34.405/34.430 mm. (1.l345/l .3555 in.)
37.375/37.400
mm. (1.4715/1 .4725 in.)
34.430/34.455
mm. (1 .3555/l .3565 in .)
37.450/37.475 mm .. (1 .4745/1 .4755 in .)
34.505/34.530 mm. (1 .3585/1 .3595 in.)
Dual
Free Length
Inner 1 Outer
I
Rate
Inner Outer
I
All 907 engines plus
912up'toeng.no.18104
APR 1987
912 engines 18105 on
37.5mn
(1.48in)
FDlAAA/2
42.2mn
(1.66 in)
46.9~11
(1.85in)
48.5mn
(1.91 in)
10.7kg/an
(601b/in) 22.4kg/d
(1261b/in)
ll.Okg/an
(61.5 lb/in) 22.5kg/an
(126
lb/in)

SECTION TD A
Page 7
Valve Guider
Length
- lnlet
- Exhaust
Internaldiameter (to ream after fitting)
Bore inhead
- lnlet and Exhaust
Standard
+ 0.025 mm. (0.001 in.)
+ 0.050 mm. (0.002 in.)
+ 0.127 mm. (0.005 in.)
Outside diameter of guide
10 Standard
+ 0.025 mm. (0.001 in.)
+ 0.050 mm. (0.002 in.)
+ 0.127 mm. (0.005 in.)
Camshafts
End float
- Dimension
- Controlled by
Running clearance (except front)
(front only)
Cam Followen
.
Bore incamshaft housings
Outside diameter
Auxiliary Shaft
Runningclearance
End float
53.34
mm. (2.100 in.)
53.34
mm. (2.100 in.)
7.145
- 7.170 mm. (0.2813 - 0.2823 in.)
11.915
- 11.925 mm. (0.4690 - 0,4695 in.)
11.940
- 11.950 mm. (0,4700 - 0,4705 in.)
11 .965 - 11,975 mm. (0.4710 - 0.4715 in.)
12,040
- 12.050mm. (0,4740 - 0.4745 in.)
11.940
- 11.950 mm. (0.4700 - 0.4705 in .)
11 .965 - 11.975 mm. (0.4710 - 0.4715 in.)
11.990
- 12.000 mm. (0.4720 - 0.4725 in.)
12.065
- 12.080 mm. (0.4750 - 0,4755 in.)
0.03 -0.20
mm. (0.001 - 0.008 in.)
Selective thrust washers
0.050
- 0.090 rnm (0.0020 - 0.0035 in.)
0.075
- 0.115 mm (0.0030 - 0.0040 in)
34.925
- 34.940 mm. (1.3750 - 1.3756 in .)
34.904 - 34.912 mm. (1.3742 - 1,3745 in .)
0.025 - 0.065 inm. (0.0009 - 0.0O%in.)
0.013
- 0.038 mm. (0.0005 - 0.0015 in.)
'0
APR 1987

Page 8
Crankshaft
Balance (inc. flywheel and clutch)
Diameter
- Main journal (No.1 . to4 inc.)
- Main journal (NO. 5 only)
- Crankpin
End float
- Dimension
- Max wear limit
- Control I ed by
Bearings (main)
- Number
- Type
Static clearance*
Max. undersize for regrind
Within 15 gr.cm. (0.2 oz. in.)
63.487
- 63.51 3 mm. (2.4995 - 2.5005 in.)
63.500
- 63.51 3 mm , (2.5000 - 2.5005 in .)
50.736 - 50.762 mm. (1.9975 - 1.9985 in.)
. .
0.08 - 0.20 mm. (0.003 - 0.008 in.)
0.30 mm. (0.012 in.)
Selective thrust washers on rear main
bearing
5
Steel backed, leadedbronze
0.013
- 0.056 mm. (0.0005 - 0.0022 in.) 0.'
0.508 mm. (0.0200 in.)
* Bearing clearance is measured with Plastigage.
MAIN EWKlNG SHELL CONFIGURATICN
ENGINE
TYPE
107 ~lite/Eclat
107 Esprit with
ION X-drilled
rank
I07 Esprit with
idrilled crank
112 Esprit
112 Elite/Edlat
112 Excel with
KIN X-drilled
xank
112 Excel with
:-drilled crank
112 Esprit HC
MAIN BEARING NUMBER
FRONT '1 I CENTRE 1 1 REAR
UPPER
m
UPPER
UPPER
UPPER
I
Plain Plain Plain Plain
Groove/Hole Groave/Hole ~lain/Hole Groove/Hole
Groove/Hole Groave/Hole
Plain Groove/Hole
Groove/Hole Groove/Hole Plain/Hole Groove/Hole
1
Groove/Hole
Plain
. .
2
Groove/Hole
3
Groove/~ole
4
Grocwe/~ole
5
Groare/Hole

SECTION TD A
Page 9
Flywheel (fixed)
Max run out (lateral)
Starter ring gear
- run out - lateral
- radial
Flexplate Flywheel
Max. run out (radial)
Max. run out (lateral) at clutch face
0.10
mm. (0.004 in.)
. .
0.41 mm. (0.016 in.)
0.15 mm. (0.006 in.)
0.18 mm. (0.007 in.)
0.13 mm. (0.005 in.)
Connecting Rod
ia
TYpe 'I' section
Material Steel forging
Distance betweencentres
1 39 -70 rnm . (5.500 in .)
4-
- 0.25 mm. (0.001 in.)
Bearings
(big end) - Type Steel backed, leaded bronze
- Static clearance * 0.025 - 0.081 mm.(0.0010- 0.0032 in.)
.. . - End float on crankpin 0.10 - 0.25 rnm. (0.004 - OD10 in.)
Small end bore (bushed) 25.405/25,410 mm . (1.0002 - 1 ,0004 in .)
Permissableweight variation between rods 2 gramrnes (inany set)
* Bearing clearance is measured with Plastigage
'a
Gudgeoc (Piston) Pin
TY pe
Locatiori
Diameter
Class of fit
Pistonand Liner
Fully floating
Circl
ips
25.40 mm. (1 .OO in.)
Finger push fit at 20'~(68' F)
Piston
- Type
a
- Material - 907/912
APR 1987
Sol.id skirt
Die-cast aluminium alloy
Forged al
umi nium alloy

Page 70 SECTION TD A
. .
. ..
, ,
Piston - (Cont .) Identification
I
2.0 LITRE 907
%:I C.R
2.0 LITRE 907
8.4:l
CR.
2.2 LITRE 912.
944:l
CR.
2-2 UTRE 912
10.9:l
CR.
2.2 LITRE 910
751 CR.
2.2 LITRE 9l0
Bal
CR.
- Rings
2 compression,. 1 oil control
- Diameter 907 - grade 'A'
95.1 66/95.179 rnrn (3.7467/3.7472 i n)
907
- grade 'B' 95 .I 79/95 .I 92 rnm (3.7472/3.7477 i n)
91
2 Std - grade 'A ' 95.148/95.161 rnrn (3.7460/3.7465 in)
912 Std
- grade 'B' 95.161/95.174 mm (3.7465/3.7470 in)
912 HC
- grade 'A' 95.205/95.219 mm (3.7482/3.7488 in)
912 HC
- grade 'B' 95.21 7/95.231 mm (3.7487/3.7493 in)
- Grade diameter - 907/912 Std 15
mm (0.6 in) up from skirt edge
- 912 HC 10.2mm (0.4 in) up fromskirt edge
1 900 pinaxis
- Gudgeon pinbore offset 907/912 Std 1 .52 mm (0.060 in) towards thrust face
912
HC 1.50 mm (0.059 in) towards thrust face
- Permissable weight variation
betweenpistons. 907/912~td 3.5 grammes
912 HC 3.0 grammes
- Ring gap 907/912 Std - top 0.38/0.51
mm (0,015/0.020 in)
- second 0.48/0.61
mm (0.019/0..024 in)
- scraper (rails) 0.38/1 .14 mm (0.015/0,045 in)
912 HC
- top&second 0.40/0.65 mm (0.016/0.026 in)
APR 1987 -oil control 0.30/0.60 mm (0.f 12/0.024 in)

SECTION TD A
' Piston (cont.)
Page 7 7
-Piston ring to groove clearance
907/912 Std
- Compression0.038/0.089 mm (0.0015/0.0035 in)
- Oil control 0.038/0.064 mm (0.001 5/O.OO25 in)
912
H C - compressionO.O4O/O. 072 mm (0.001 6/O. 0028 i n)
- Oil control 0.020/0.052 mm (0.0008/0.0020 in)
Cyl
i nder Liner - Type Wet, slip fit
- Material - 907/912 Std Cast Iron
-912 HC Nikosil coated, forged aluminium alloy
- Internal diameter
- 907/912 Std Measured 50mm from top across thrust axis
Grade 'A' 95.275/95.288
mm (3.751 0/3 .7515 in)
Grade
'B'
95.288/95.308 mm (3.7515/3.7520 in)
- 912 HC Measured 70mm from top across thrust axis
.. a
Grade 'A' 95.255/95.269 nim (3.7502/3 .7507
i n)
Grade
'B'
95.267/95.281 mm (3.7507/3.7512 in)
- Fitted height above block - 907/912 Std 0.1 O/O.l5
mm (0.004/0.006 in1
('nip')
up to engine number 12477
0.025/0.13 mrn (0.001/0.005 in)
OOI/Q~~
from engine number 12478
- 912 HC minus 0.025 to
+ 0.050mm
(minus 0.001 to
+ 0.002 in)
- Permissable variation between linen 0.03 mm (0.001 in) J
- Piston clearance incylinder liner 907 0.?8[0.13mm (0.004/0.005 in)
912 Std 0.11/0.15mm (0.005/0.006 in)
912 HC 0.05/0.08mm (0.002/0.003 in)
Lubrication System
a
Oil pressure under normal running condition (hot)
a). Not below 5 Ib/sq .in. (0.35 kg
./sq .cm .) at idlespeed
b), N0tbel0~35Ib/s~.in.(2.5kg./s~.cm.)at3,500rpm
C) ;
Not below 45 Ib/sq .in. (3.2 kg ./sq .cm .) at 6,500 rpm
Filter Full-flow, disposable canister
type with anti-flow back valve)
Pump
- type Eccentric rotor
- Drive Toothed belt
- Rotor/annulus tip clearance 0.05
- 0.15 mm (0.002 - 0.006 in)
- Annulus end float 0.03
- 0.08 mm (0.001 - 0.003 in)
,- a
- Rotor end float 0.06
- 0.09 mm (0.0025 - 0.0035 in)
- Annulus to housing clearance 0.18
- 0.30 mm (0.007 - 0.012 in)
APR 1987
Dipstick tube standout from M. B . P .

Carburettor Type (2 off 1
-US P~NO. (Frmtj,
(Rear)
Tag No. ~Frmt 1
(Rear)'
Paint Spat on 'Dellorto'
Chake
Main Jet
Main Air Corrector Jet
Main Rnulsion Tube
Idle Jet
Idle Jet Holder
Float Weight
Float
Setting Height (mi)
Float Needle Valve
Pump Jet
Starter Jet .:
Starter'Emulsion Tube
Paer Jet
Sla~mning Speed (rpn)
Idle03Level (hot)
spec 1
spec 3
DHLA 45E
D907EO789W
D9O 7EO 790
W
-
-
-
35 mn
130
110
7772-5
56
7850-6
log
16.5-17.0
170
45
70
7482-1
-
900-1000
2.0-3.0%
DHLA 45E
E907E0789F
E907E0790W
5295A
5294P
Green
36 m
160
230
7772-8
50
7850-7
log
16.i5-17.0
170
38V 42H
70
7482-1
-
900-1000
2 -0-3.0%
Dellorto Carburettors
Elite
1
Eclat )m.
Excel Std.
Spec 9
DHLA 45E
A912E0789F
A912EO790F
5324A
. .
5323P
BluekBlack
37
mn
160
230
7772-8
58
7850-9
8.5g
14.5-15
.O
170
50H
95
7482-3
-
850-950
0.7-1.5%
Elite
1
Eclat )auto
Esp.S3 Std
Spec 9
DHLA 45E
A912E094O
J
A912E094LJ
5324A
5324P
Blue
37
m
160
230
7772-8
55
7850-9
8.5g
14.5-15
.O
170
50H
95
7482-3
-
850-950
0.7-1.5%
Ekcel HC
mual
spec 10
DHLA 45D
A912E9207F
A9l2E92O8F
5382
5381P
Black
37
mn
135
150
7772-8
55
7850-9
8.5g
14.5-15
.O
170
45
H
95(R/~80)
7482-3
70
900-1000
0.5-1.5%
Excel HC.
auto
spec 10
Esprit
S3
HC
spec 10
DHlA45D
A912E2336F
A912E2337F
5395A
5394P
Black
37
mn
135
150
7772-8
5
6
7850-9
8.5g
14.5-15
.O
170
45H
80
7482-3
70
900-1000
0.5-1.58
fdlaas/I

Page 73
Zenith Carburetton
Type and number
Needle
Spring Colour
Damper Oil
Zenith 175/CD
SE (two)
BIDK
Blue
SAE 20W/50
Letus part number
- Spec 2 front B907E0791
W
rear B907E0792W
- Spec 4,6,7,8 front C907E0791
F*
rear C907E0792F*
*
Red paint spot on air valve housing. These carbs are'tothe same
;a
specification as the Bpref-ixcork, except for the inclusionof internal/
external flaat vent valves.
Fast idlesetting (engine warm)
- Spec 2 .
2.16 - 2.41 rnm. (0.085 - 0.095 in.)
betweenstarter cam and screw
head
in 'off' pasition
- Spec 4,6,7,8 1.27
mm. (0.050 in.)
Sl ow running speed 950 - 1000 rpm
Idle COlevel (normal running tempemture)
- Spec 2 (without air injection) 2.5
- 4.0 % CO
- Spec 4, 6 This must be checked with the air injection
disconnected and
a reading taken via a
sample pipe before the catalyst. To
disconnect the air injectionremove the air
outlet hose (betweenoutlet and non-return
valve)
from the air pump, and blank off
the hose. Adaptor and sample pipe
-
Part NO. TOOOT0321A. Blankingplug
(for air hose)
- Part No. TOOOT0322A
Setting 3.5
- 4.5% CO
- Spec 7
- Spec 7
with air pump (and
no catalyst)
Tailpipe idle check
- less than 1.O%
C.O. with air en, 2.0
- 3.5% C.O.
with air off.
With pulseair injectionsystem
Upstream of catalyst0.2 - 1.O%.C.O.

SECTION TD A
Page 74
IGNITIONSYSTEM
TY pe - Spec.1,2,3,4,5,6 Csil and Distributor
- Spec 7, 8, 9 (Eprit up Coil and distributor with infra-red solid
to 1983. Not Excel) state
' Lumenition' system.
- Spec 9 (Esprit 1983 on Coil and distributor with Lucas
and Excel only) Constant Energy System
Number.
1 cylinder .
Toward front
Ignitionadvance control
Sparking plugs: Fully automatic
With
Lucas ignition leads - spec 1,3,5 NGK BP6ES
- spec 2,4,6,7 NGK BP5ES
With
NGK ignition leads - spec 1,3,5,9 NGK BPR6ES
-spec 2,4,6,7,8 NGK BPR5ES
- spec 10 NGK BPR7ES
Spark plug gap
- with contact breaker 0.6 mm. (0.023 in.)
- with high energy ignition0.9 rnm. (0.035 in.)
DISTFSBVPOR & IGNITIaJ TIMING (All figures + 2")
Spec 2 25D 8O 8' 0"
( 41584 ) Retard
Spec 3 25D blanked 16" 16'
(41584
) off
Spec 4,6 25D 8" 8' 0 "
( 41634A) Retard
45D
( 41626 )
Spec 5 23D4 ar 43D
- 9" -
( 41623 1
Spec 7,8 45D (41626) 8" 10" .2"
with Retard
Livnenition
I I I
'
I
spec 9 43D with
-
:go .,
-
Lumenition
Ehergy Iqn.
Spec 10 45D (41946 1 w 10" lo0
Ccostant Advance (hot
Centrifugal Advance
Characteristics
(vacuum disconnected
Belw 1,000 nil 28" BTDC @
2,000 8" 3.500 - 4.000 run
I
3,000 16" (&cum disconn;?cted)
as Spec 1 24" BTDC @
3,500 - 4,000 rpn
I (vacuum disconnected)
as Spec 1
(32 - 34" BTDC @
2,000
4,000 (vacuum disconnected)
5,000
Spec 4,6
(vacuum
disconnected )
3,500 - 4,000
950
2 50 rpn
APR ,1987