MG MGB User Manual

GENERAL
DATA—continued
(lSG/lSGA—continued)
Piston
rings
COMPRESSION
Type:
Top
.. ..
..
Second
and third
Width:
Top
.. ..
Second
and thir
Fitted
gap:
Top
.. ..
..
Second
and third
..
Ring
to
groove
clearance:
Top
.. ..
Second
and third
OIL
CONTROL
Type
..
Width
..
..
Fitted
gap
.. ..
..
Ring
to
groove
clearance
Gudgeon
pin
Type
Fit
in
piston
Diameter
(outer)
Camshaft
Journal
diameters: Front
Centre
Rear
..
. .
. . .
Front
Bearmg
liner
1n81dedlameter
(reamed
after fitting):
centre
Rear
Diametrical clearance
End-thrust
End-■oat
Cam lift
..
Drive
..
Timing chain
..
Tappets
Type
.. ..
Outside
diamete
Length
..
Rocker
gear
ROCKER
SHAFT
Length
Diameter
ROCKER
ARM
Bore
..
..
.. ..
Rocker
arm
bush
inside diameter
Ratio
..
Valves
Seat
angle: Inlet
and exhaust
Head diameter:
Inlet
Exhaust
..
Stem diameter:
Inlet
Exhaust
..
Stem
to
guide clearance:
Inlet
..
Exhaust
Valve lift:
Inlet
and exhaust
General
Data 2
.«1
Parallel
1
Tapered
J
.0615
to
.0625
in.
(1.562
to
1.587 mm.).
cast
iron—molybdenum
filled.
.012
to
.017
in.
(.304
to
.431
mm.).
1
.0015
to
.0035
in.
(.038
to
.088 mm.).
Slotted
scraper.
.1552
to
.1562
in.
(3.94
to
3.96
mm.).
.012
to
.017
in.
(.304
to
.431
mm.).
.0016
to
.0036
in.
(.04
to
.09
mm.).
Semi-■oating.
Free-fit
at
20°C.
(68
°F.).
.7499
to
.7501
in.
(19.04
to
19.05
mm.).
1.78875
to
1.78925
in.
(45.424
to
45.437
mm.).
1.72875
to
1.72925
in.
(43.910
to
43.923
mm.).
1.62275
to
1.62325
in.
(41.218
to
41.230
mm.).
1.79025
to
1.79075
in.
(45.472
to
45.485
mm.).
1.73025
to
1.73075
in.
(43.948
to
43.961
mm.).
1.62425
to
1.62475
in.
(41.256
to
41.269
mm.).
.001
to
.002
in.
(.0254
to
.0508
mm.).
Taken
on
locating
plate.
.003
to
.007
in.
(.076
to
.178
mm.).
.250
in.
(6.35 mm.).
Chain
and sprocket from
crankshaft.
%in.
(9.52 mm.).
pitch
x
52 pitches.
Barrel
with
■at
base.
1%
in.
(20.64 mm.).
2.293
to
2.303
in.
(58.25
to
58.5
mm.).
143%
in.
(.356
mm.).
.624
to
.625
in.
(15.85
to
15.87
mm.).
.7485
to
.7495
in.
(19.01
to
19.26
mm.).
.6255
to
.626
in.
(15.8
to
15.9
mm.).
1.4
:
1.
451/24).
1.562
to
1.567
in.
(38.67
to
38.80
mm.).
1.343
to
1.348
in.
(34.11
to
34.23
mm.).
.3422
to
.3427
in.
(8.68
to
8.69
mm.).
.3417
to
.3422
in.
(8.660
to
8.661
mm.).
.0015
to
.0025
in.
(.0381
to
.0778
mm.).
.002
to
.003
in.
(.0508
to
.0762
mm.).
.3645
in.
(9.25
mm.).
MGB.
Issue7.
80619

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English