6
INTRODUCTION
AND
GENERAL INFORMATION
CONVERSION-ENGLISH
AND
METRIC MEASURES
CUBIC INCHES
AND
CUBIC CENTIMETERS:
TO
~im-
plify comparison
of
engine sizes between cubic inches
and cubic centimeters or liters, follow the formulas
shown in this section.
CUBIC CENTIMETERS TO INCHES:
When changing
cubic centimeters to cubic inches, multiply cubic centi-
meters times
.061
to
obtain cubic inches, (C.
C.
X
.061
=
Cubic Inch).
CUBIC INCHES TO CENTIMETERS:
When changing
cubic inches to cubic centimeters, multiply cubic inches
times
16.39
to obtain cubic centimeters, (Cubic Inch
X
16.39
=
C.
C.).
LITERS TO CUBIC INCHES:
When changing liters to
cubic inches, multiply liters times
61.02
to obtain cubic
inches, (Liters
X
6 1.02
=
Cubic Inch).
CUBIC INCHES TO LITERS:
When changing cubic
inches to liters, multiply cubic inches times
0.01639
to
TORQUE REFERENCES
HEAD MARKINGS-Head
marking identification shall
consist
of
radial lines extending to the across flats top
circle. The identification shall be easily legible and
distinct from manufacturer's trade mark, but need not
be in any particular relation to the hexagon. The manu-
facturer's trade mark shall be legible, in the center
of
the bolt head, and not over
%
of the cross flats dimen-
sion.
HEAD
MARKINGS
GRADE3
I
GRADE5
I
GRADE8
I
1
80"
1
20"
60"
PB2831
Fig. 3--Bolt Head Identification
obtain liters, (Cubic Inch
X
0.01 639
=
Liters).
CUBIC CENTIMETERS TO LITERS:
When changing
centimeters to liters divide by
1,000
simply
by
moving
the decimal point three figures to the left.
LITERS TO CENTIMETERS:
When changing liters to
cubic centimeters, move the decimal point three figures
to the right.
MILES TO KILOMETERS:
When changing miles to
kilometers, multiply miles times
1.609
to obtain kilom-
eters, (Miles
X
1.609
=
Kilometers).
KILOMETERS TO MILES:
When changing kilometers
to miles multiply kilometers times
0.6214
to obtain
miles, (Kilometers
X
0.6214
=
Miles).
POUNDS TO KILOGRAMS:
1
lb.
=
.4536
Kg.
KILOGRAMS TO POUNDS:
1
Kg.
=
2.2046
lbs.
BOLT TORQUE
SIZE GRADE
1
GRADE
5
GRADE
8
6-32 10
Above dotted line -in. Lbs.
8-32 12
Below dotted line -Ft. Lbs.
10-24 17
10-32 20
12-24 25
1/4-20 40 130 185
1/4-28 45 130 185
711 6-20
112-1 3
1/2-20
911 6-1 2
911 6-1 8
518-1
1
518-1 8
314-1 6
60
85
95
115
130
170
180
200
511 6-1 8
511 6-24
318-1 6 180
1
30
42
49
70
75
105
120
145
160
21
0
225
245
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