MG MGB User Manual

GENERAL
DATA
(18GB)
The
following
information is
applicable
to
the lSGB-engined
cars
and
should
be
used
in
conjunction
with the preceding
specification
for the
18G/ISGA-engined
car.
ENGINE
Type
Main
bearings
Number
and
type
..
..
..
Length: Front,
centre
and
rear
Intermediate
Connecting
rods
Type
..
Big-end bearings
Length
Pistons
Gudgeon
pin
bore
..
..
Clearance
in
cylinder skirt: To
Bottom
..
Gudgeon pin
Type
..
Fit
in
piston
Diameter
(outer)
..
FUEL
SYSTEM
Carburetter needles
..
REAR
AXLE
(GT)
Type
Ratio
..
.. ..
.. ..
..
Differential bearing
preload
.. ..
.. ..
Pinion
bearing
preload.
New
collapsible
spacer
only
Pinion bearing
preload. Oil seal
change
spacer
collapsed
..
Backlash
adjustment:
Crown
wheel
..
Pinion
FRONT
SUSPENSION
(GT)
Spring
coil diameter
(mean)
Free
height
Number
of free coils
..
.. ..
.. .. ..
Static
length
at
load
of
1,193
lb.
(541.5
kg.)i201b. (9.1 kg.)
REAR
SUSPENSION
(GT)
Spring
detail
Working load
(i15 lb.
7
kg.)
..
WHEELS (GT)
Size
;
Disc
MGB.
Issue
6.
8%‘19
12;.
4..
18GB.
5
thin-wall.
1%
in.
(28.5 mm.).
%in.
(22.23 mm.).
Angular-split big-end, bushed small-end.
.775
to
.785
in.
(19.68
to
19.94
mm.).
.8126
to
.8129
(20.610
to
20.167
mm.).
.0012
to
.0006
in.
(.030
to
.015
mm.).
.0033
to
.0021
in.
(.080
to
.050
mm.).
Fully ■oating.
.0001
to
.00035
in.
(.0025
to
.007
mm.).
.8124
to
.8127
(20.608
to
20.615
mm.).
FX (Standard);
No. 6
(Rich);No.
21
(Weak).
Hypoid,
semi-■oating.
3.909
2
l
(11.43).
.002 in.
(.05 mm.)
nip
per
bearing.
14
to
18
lb.
in.
(.161
to
.207
kg.
m.).
Adjust
to
preload,
refer
Section
Ha.4.
Shims.
Head
washer.
3.28
in.
(83.3 mm.).
9.1:t1—16in.
(231i1.6
mm.).
7.2.
6.6
in.
(168 mm.).
51010(32L6kg)
5]
x
14in.
General
Data 11

MG MGB Specifications

General

Brand	MG
Model	MGB
Category	Automobile
Language	English