MG MGB User Manual

ENGINE
TUNING
18V
846F and 18V
847F
ENGINE—T0
European
emission
control
requirements
(ECE
15)
ENGINE
Type
.
Displacement
.
Firing order
Compression
ratio
Cranking
pressure
Valve rocker
clearance
Idle
speed
Fast
idle speed
Stroboscopic
ignition timing
Static
ignition timing
Timing
mark location
DISTRIBUTOR
Make/
type
Contact breaker
gap
..
Contact
spring
tension
Rotation of
rotor
Dwell
angle
Serial number
..
Centrifugal
advance
Crankshaft degrees/
Speed
(vacuum
pipe
disconnected)
Vacuum advance
Starts
Finishes
.. ..
Total crankshaft
degrees
IGNITION
COIL
Make/Type
Resistance:
Primary
..
Consumption
..
SPARKING
PLUGS
Make/
Type
Gap
..
CARBURETTERS
Make/
Type
Specification
Jet
Needle
_
Piston
spring
EXHAUST
EMISSION
Exhaust
gas
analyser
reading
at
engine
idle
speed
Engine
Tuning Data
8
18V.
109.8
cu.
in.
(1798
cc).
1, 3,
4, 2.
9.0
:
1.
_
Nominal l701bf/in2(11.95
kgf/cmz)
at
275
r.p.m.
0.013
in.
(0.33
mm.)
cold, 0.015
in.
(0.38
mm.)
hot.
750
r.p.m.
1,300
r.p.m.
10°B.T.D.C.
at
1.000
r.p.m.
7°
B.T.D.C.
Pointer
on
timing
case,
notch
on
crankshaft
pulley.
Lucas/45D4.
0.014
to
0.016
in.
(0.35
to
0.40
mm.).
18
to
24
oz.
(510
to
680 gm.).
Anti-clockwise.
51°:
5
0.
41610.
O
to
loat
600
r.p.m.
1
to
50
at
1,600
r.p.m.
6
to
100
at
2,600
r.p.m.
10
to
140
at
3,400
r.p.m.
15
to
l9°at
4,400
r.p.m.
20
to
24Oat
5,400
r.p.m.
22
to
26°at
6,400
r.p.m.
3
in.
Hg. (76
mm.
Hg.).
11
in.
Hg.
(558
mm.
Hg).
24°
i
2".
Lucas/HAIZ.
3.1
to
3.5 ohms
at
20°C.
(6801:).
3.4
to
4.0
amps.
Champion/N9Y.
0.035
in.
(0.90
mm.).
SU/Hl
F4.
FZX
1001.
0.090
in.
(2.2 mm.).
ACD.
Red.
3%
CO.
MGB.
Issue2.
89961

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English