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Historical CB750 K1 Technical Specifications
The following information is taken from the
Honda Motorcycle Guide.
1 9 7 0 to 1 9 7 1
|
Model
Year: 1970 to 1971 |
Frame
#: CB750-1044650 |
Engine
#: CB750E-1044806 |
Colors:
Candy Gold, Candy Ruby Red, Candy Garnet Brown,
Valley Green Met. |
Remarks:
The tank, side covers, headlight shell, and upper
forks were of the basic color (red, gold, green,
or brown). The side covers were smaller without
slots on the leading edge. The throttle system
used a push-pull cable arrangement to a linkage
joining the four carbs together. 5-spd. 4/4 |
|
|
|
Standard
Size |
Metric
Size |
|
Dimensions |
|
|
|
Overall
length |
85.0
in. |
2,160
mm |
|
Overall
width |
34.8
in. |
885
mm |
|
Overall
height |
45.5
in. |
1,155
mm |
|
Wheel
base |
57.3
in. |
1,455
mm |
|
Seat
height |
31.5
in. |
800
mm |
|
Foot
peg height |
12.2
in. |
310
mm |
|
Ground
Clearance |
5.5
in. |
160
mm |
|
Dry
weight |
479
lb |
218
kg |
|
Weight
distribution L/R |
271.1/209.5
lb |
123/205
kg |
|
Frame |
|
|
|
Type |
Double
cradle tubular steel |
|
|
F.
Suspension, travel |
5.6
in. |
143
mm |
telescopic
fork |
R.
Suspension, travel |
3.3
in. |
85
mm |
Swing
arm |
F.
Tire pressure, size |
28
psi |
2.0
kg/cm2 |
3.25-19
(4 PR) |
R.
Tire pressure, size |
28
psi |
2.0
kg/cm2 |
4.00-18
(4 PR) |
F.
Brake, lining area |
2.9
in2x 2 |
53
cm2x2 |
Disk
brake |
R.
Brake, lining area |
8.2
in2x 2 |
53
cm2x2 |
Internal
expanding shoe |
Fuel
Capacity |
4.5
US gal, 3.7 Imp. gal |
17
liter |
|
Fuel
Reserve Capacity |
1.3
US gal, 1.1 Imp. gal |
5
liter |
|
Caster
Angle |
63
degrees |
|
|
Trail
Length |
3.74
in. |
95
mm |
|
Front
Fork oil capacity |
7.0-7.3
oz |
220-230
cc |
from
dry |
Engine |
|
|
|
Type |
Air
cooled,
inline four cylinder, four stroke, sohc |
|
|
Bore
and Stroke |
2.401
x 2.408 in. |
61
x 63 mm |
|
Displacement |
44.93
cu in |
736
cc |
|
Compression
|
170.7
psi |
12
kg/cm2 |
|
Carburetor,
Venturi Dia. |
4x28mm
Keihin,
slide type |
|
|
Valve
train |
Chain
driven
overhead camshaft |
|
|
Oil
Capacity |
7.39
US pt, 6.16
Imp. pt |
3.5
liter |
|
Oil
Tank Capacity |
4.22
US pt.,
3.55 Imp. pt |
2
liter |
|
Lubrication
System |
Forced
pressure
and dry sump |
|
|
Air
filtration |
Paper
element |
|
|
Valve
Tappet Clearance |
In:
0.002 in.,
Ex: 0.003 in. |
In:0.05
mm,
Ex:0.08 mm |
|
Engine
weight (Wet) |
176.3
lb |
80
kg |
|
Air
screw opening |
1
3/8 turn |
|
|
Idle
speed |
900
rpm |
|
|
Main
jet |
#120 |
|
|
Idle
jet |
#40 |
|
|
Air
jet |
#100 |
|
|
Float
height |
0.866 in. |
26mm |
|
Drive
Train |
|
|
|
Clutch |
Wet,
multi-plate |
|
|
Transmission |
5-speed,
constant mesh |
|
|
Gear
Ratio I |
2.500:1 |
|
|
Gear
Ratio II |
1.708:1 |
|
|
Gear
Ratio III |
1.333:1 |
|
|
Gear
Ratio IV |
1.097:1 |
|
|
Gear
Ratio V |
0.939:1 |
|
|
Primary
reduction |
1.708:1 |
|
|
Secondary
reduction |
1.167:1 |
|
|
Final
Reduction |
2.667:1
(18T x 48T) |
|
|
Electrical |
|
|
|
Type |
12v,
negative earth |
|
|
Ignition |
Coil
and contact
breaker, spare spark |
|
|
Starting
system |
Electrical
motor
and kick pedal |
|
|
Alternator |
3-phase
12 V
0.21kW@5,000 rpm |
|
|
Battery
Capacity |
12V
- 14 amp hour |
|
|
Spark
plug |
NGK
D-8ES |
|
|
Spark
plug gap |
0.024
~ 0.028 in. |
0.6
~ 0.7 mm |
|
Point
gap |
0.012
~ 0.016 in. |
0.3
~ 0.4 mm |
|
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