1973 DATSUN B110 Service Repair Manual

ENGINE
MECHANICAL

o

Match
mark

Key
groove

Fig
EM
78
1

Setting
chain

12

Install
the
timing
chain
and

camshaft

sprocket

Camshaft

sprocket

tightening
torque

4

0
to
4
8

kg
m
29

to
35
ft
lb

Fig
EM

78
2
Chain
tensioner
installation

Fig
EM
7B
Cam

sprocket
gear
installation

Notes
a
Make

sure
that
the

camshaft

sprocket
dowel

hole
and
crankshaft

sprocket
key
are
in
line
and

both
the
dowel
hole
and

key
are
located
down

ward
b
Set
the

timing
chain

making
its

mating
marks

meet
with
those
of
crankshaft
sprocket
and

camshaft

sprocket
at
the

right
hand
side

13
Install
the

timing
chain
tensioner
and

tighten
the

tensioner
bolts
to
a

torque
of
0
6
to
0
8

kg
m
4
3

to
5

8

ft
lb

Check
the
tensioner

spindle
projection

Wear
limit

Spindle
projection

mm
in
15
0

591

Fig
EM
79

Checking
the
tension

spindle
projection

14
Install
the
crankshaft
oil

thrower

15

Install
the

new
oil
seal
to
the
front
cover
The

front
cover
oil
seal
should
be

replaced
when
the
front

cover
is

disassembled

16

Install
the

front
cover

applying
the

sealing
agent
to

both
surfaces
of
the

gasket

Tightening
torque

0
5
to
0
7

kg
m
3
6
to
5
1

ft
lb

EM
29

ENGINE

17
Install
the
oil
strainer
and
the
oil

pan
using
the

gasket

Apply
sealing
agent
on

hath
surfaces
of
the

gasket

especially
on
the
front
and
rear

portions
of

the
oil

pan
Oil

pan
tightening
torque

0
4

to
0
6

kg
m

I
9
to
4
3

ft

lbJ

I
R
I
nvcrt
the

engine
and

install
the

cylinder
head

assembly
and

gasket

Cylinder
head

gasket
with
O

ring

Cylinder

block

side

Steel

sheet
D

QCO
0
0

i

O
1

nrr
11

I

Li
I
I

Vo
o
f

C
C
r
c

Sealing
agent
not

required

Cylinder

head

side

Joint

sheet

Remarks
Install
without

applying
sealing
agent

Be
careful
not
to

damage
the

push
rod
side

because

this
side
has

previously
been

provided

with

sealing
agent

Fig
EM
80

Cy
linder
head
installatjo
1

Note

Apply
sealing
agent
overall
the

cylinder
block

surface
Place
the

gasket
on
it
and

apply
sealing

agent
to
the

gasket
top

19

Tighten
the

cylinder
head
bolts
to
the

specified

torque

The

cylinder
head
uses
two

types
of
installation
bolt

one
is
for
the
center

right
side
and
the
other
is
for
all

other

positions
The

bolt
for
the

center

right
side
has
a
O

ring

j
I

Y

J
CYlinder
head

I
I
Cvlinderheadgasket

I
Cylinder
block

O

ring
To
be

inserted
into
hole
in

cylinder
block

T

mark
on
its
head

Tightening
torque

5
5
to
6
0

kg
m
40
to

43
ft
lb

fI
J
D

Bolt
number
Diameter
Identification
mark

CD
7
9
to
8
1

1

0
3111
to
0

3189
T
mark

Except
for

CD
8
87

to
9
03

o
not
marked

0
3492
to
0
3555

Fig
EM
8t
Head
bolt

segment

l

Fig
EM
82

Tightening
sequenc

EM
3D

ENGINE
MECHANICAL

20
Install
the

push
rods

21
Install
the
rocker
shaft

assembly
and

tighten
the

rocker
shaft
bracket
bolts
to
the

specified
torque

Tightening
torque

2
0
to
2
5

kg
m
15

to
18

ft
Ib

Note

Tightening

operation
should
be
made

gradually
in

separating
two
or
three

stages
and

outwardly
from

the
center
bracket

Fig
EM
B
RockeT

shaft
installation

22
Install
the

intake
and
exhaust
manifolds

Tightening
torque

0
9

to
I
4

kg
m
6
5
to
10

ft
lb

Fig
EM
B4

Installation

of
intake
and

exhaust

manifolds

23

Adjust
valve
clearance
with

the

specified
di

mensions
Fig
EM
85
Valve
clearance

adjustment

Intake
at
cold

rom
in
0
35
0
0138

Exhaust

at
cold

rom

in
0
35
0
0138

24
Install
the
rocker
cover
and
carburetor

assembly

25

Install
the

water

pump
and
thermostat

Tightening
torque

0

9
to
I
4

kg
m

6
5
to
10
ft
lb

26
Install
the
crankshaft

pulley

Tighten
the

crank

pulley
bolt
to
the

specified

torque

Tightening

torque

15
to
16

kg
m

109
to
116

ft
lb

Tightening
tOI
q
e
15

JP
16

g
m

10l
to
11
ft
Ib

Fig
EM
B6

CTankshaft
pulky
installation

EM
31

ENGINE

27
Install
the
oil

pump
with
oil
filter

28
Install
the

alternator
fan
and

fan
belt

29
Install
the

fuel

pump

30

Install
the
distributor

assembly

Fig
EM
B7

Timing
maTk

Fig
EM
SS
Distributor
installation

EM
32
Notes
3
Set
the

No
1

piston
to
its

top
dead
center
of

the

compression
stroke

b
Before
installation
return

the
distributor
rotor

approximately
60

degrees
from

its

regular
posi

tion
Insert
the

assembly

meshing
the
distributor

drive

gear
and
driven

gear

After

installation
the
distributor
rotor
should

come

into
contact

with
the
mark
on
the
rotor

cap

fitting
as

shown
in
the

Figure

31

Install
the

spark
plugs
and

connect
the

distributor

to

plug
high
tension

lead
wire

32
Install
the
fuel
hoses

and
tubes

33
Install
the
clutch

cover

assembly

34
Install
the

engine
stingers
and

crankcase
ventilation

hose

35
Dismount

the

engine
from
the

working
stand

Install
the

engine
mountings

ENGINE

MECHANICAL

SERVICE
DATA
AND
SPECIFICATIONS

GENERAL
SPECIFICATION

Cylinder
arrangement
4
in
line

Displacement
cc
cu
in

mm
in
1
171
71
5

73

x
70
2
874

x
2
756

Bore
and
stroke

Valve

arrangemen
t
Over
head
valve

Firing
order
I
3
4
2

Engine
idle

rpm
800
Manual
transmission

650in
D

Automatic
transmission

Compression
ratio
8
5

Oil

pressure
Hot

at
2
000

rpm

kgfcm2
Ibfsq
in
3
0

to
3
5
43
to

50

TIGHTENING
TORQUE

Unit

kg
m

ft
lb

Cylinder
head
bolts

Flywheel
bolts
5
5
to
6
0
40

to
43

3
2
to
3

8
23

to
28

6
5

to
7
5
47
to
54

5
0

to
6

0
36
to

43

4
0

to
4
8

29
to
35

0
4
to
0
6
2

9
to
4
3

l
l
to
I
7
8
0

to
12

0

9

to
I
4
6
5

to
10

15

to
16
108
to
116
Connecting
rod
nuts

Main

bearing
cap
bolts

Camshaft

gear
bolts

Oil

pan
bolts

Oil

pump
bolts

Oil
strainer

bolts

Crank

pulley
bolts

EM
33

ENGINE

SPECIFICATION

a
Valve
mechanism

Valve
clearance
Hot

Intake
mm
in

Exhaust
0
35
0
0138

0
35
0
0138

Valve
clearance
Cold

Intake

Exhaust
mm

in

0
25
0
0098

0
25
0
0098

Valve
head
diameter

mm
in

Intake
35
1
378

29
1
142
Exhaust

Valve
stem
diameter

mm
in

Intake
7

970
to
7
985

0
3138
to
0
3144

7

945
to
7

960
0
3128
to
0
3134

Exhaust

Valve

length
mm
in

Intake

Exhaust
102
35

to
102
65
4
030
to
4

041

102
35

to
102

65
4
030

to
4
041

Valve

spring
assembled

height
111m

kg
in
lb
8
5
0

3346

46
5
1
831

30
2
58
5
1
I99

129

38
7
23
9
1
524
52
7

5
0
Valve
lift

mm
in

Valve

spring
free

length
mm

in

Valve

spring
loaded

length
mm

kg
in
lb

Valve

spring
effective
turns

Valve

guide
length
111m

in
4
100
0

1614

26
4
1

031
1

53
2
087
Valve

spring
wire

diameter
mm

in

V
alve

sp
g
coil
diameter

inm
L

Valve

guide
height
from

head

surface
111m

in
18
0
709

Valve

guide
inner
diameter

mm
in

Intake
8
015

to
8
000
0
3156
to
0
3150

Exhaust
8
015
to
8
000
0
3156
to
0

3150

EM
34

ENGINE
MECHANICAL

Valve

guide
outer
diameter
mm
in

Intake
12
044

to
12
033

0
4737
to
0
4733

Exhaust
12
044
to
12

033

0
4737
to
0
4733

Valve

guide
to
stem
clearance
mm
in

Exhaust
O
oJ5

to
0

045
0
0006
to

0
0018

0
040
to
0
070
0
0016
to
0

0028
Intake

Valve
seat
width

Intake

Exhaust
mm
in

1
3
0
0512

1
8
0

0709

Valve
sea

tangle
Intake
450

Exhaust
450

Valve
seat
interference

fit
mm
in

Intake
0
064
to

0
096
0

0025
to
0
0038

Exhaust
0
064
to

0
096
0

0025
to
0
0038

Valve

guide
interference
fit
rom
in

Intake

Exhaust
0
022

to
0
044
0

0009
to
0
0017

0
022

to
0

044
0

0009
to
0
0017

b

Camshaft
and

timing
chain

Camshaft
lobe
lift
mm

in

mm
in
0

02
to
0
08
0
0008
to

0
0031

Camshaft
end

play

5
65
0
222

Camshaft

journal
diameter
mm
in

1st
43
783

to
43

796

I
7237
to
I
7242

2nd
43
283

to
43

296

1
7041
to
1
7046

3rd
42
783
to
42
796

1

6844
to
1
6849

4th
42
283

to
42
296

1

6647
to
1
6652

5th
41

208
to
41
221

1
6224
to
1
6229

Camshaft
bend
mm
in
0
015
0
0006

Camshaft

bearing
inner

diameter
mm
in

1st
43
843
to
43
833

I
7261
to
1
7257

EM
35

2nd

lrd

4th

5th

c

Rocker
arm

lever
ratio

d

Connecting
rod

Center
distance

Bearing
thickness

Big
end
end

play

Connecting
rod

bearing

clearance

Connecting
rod
bend

e
Crankshaft
and
main

bearing

Journal
diameter

Journal

taper
and
out
of
round

Crankshaft
end

play
mm
in

mm
in

mm
in

mm
in

mm
in

mm
in

mm
in

mm
in

Maximum
service
limit
of

crankshaft

mm
in
end

play

Crank

pin
diameter

mm
in

Main

bearing
thickness
Crank

pin
taper
and
out
of
round

mm
in

mm
in

Main

bearing
clearance
mm
in

Maximum
seIVice
limit
of
main

bearing
clearance

mm
in

Crankshaft
bend

f
Piston
mm
in
ENGINE
43
333

to
43
323

l
7060
to
I
7050

42
846
to
42
836

1
6868
to
1
6865

42
333
to
42
323

1

6667
to
1

6663

41

268
to
41
258

1

6247
to
1
6243

142

12147
to

121
53

4

7812
to
4
7788

1

500
to
1

508
0

0591
to
0

0594

0
2

to
0
3
0

0079
to

0
0012

less
than
0
4

0
016

0
020

to
0
050
0
0008
to
0
0020

0
05
to

0
10
0

0020
to
0
0039

49

951
to
49

964

1

9666
to
1
9671

less
than
0
03
0

0012

0
05

to
0
15
0

0020
to
0

0059

0
3
0
0118

44

974
to
44

961

1
2706
1
177012

less
than
0
03
0

0012

1

835
to
1
827
0

0722
to
0
0719

0
020
to
0
062
0
0008
to
0
0024

0

15
0

0059

0
Gl5
to
0
05
0

0006
to
0
0020

EM
36