Great Wall engine 4G64S4M. Manual — part 2
11-2
Specifications
4G64 S4 MPI
Type
In-line OHV, SOHC
Number of Cylinders
4
Combustion Chamber
Single Pitch Roof
Total Displacement
ml
2,351
Cylinder Bore
mm
86.5
Stroke
mm
100.0
Compression Ratio
9.5
Intake valve
On
18
before top dead center
Valve Timing
Off
53
after bottom dead center
Exhaust valve
On
50
before bottom dead center
Off
18
after top dead center
Lubrication system
Compression supply, full flow filtering
Type of oil pump
Gear type
Cooling system
Water cooling forced circulation
Type of water pump
Centrifugal impeller
ENGINE
SPECIFICATION
General
Items
11-3
ENGINE
SPECIFICATION
Specifications
Maintenance Standard
Unit
mm
Items
Standard Value
Limit Value
Convex value of tensioner arm
12
Press-in value of tensioner arm (98~196N)
1
Height of cam
Air intake
37.39
36.89
Camshaft
Air exhaust
36.83
36.33
Shaft diameter
45.0
Planeness of Bottom Surface
0.03
0.2
Cylinder Head
Surface lapping limit*Total lapping of cylinder block and head
* 0.2
Total height
119.9
120.1
Length of cylinder head bol
97.4
99.4
Edge thickness
Intake
1.0
0.5
Exhaust
1.2
0.7
Diameter of valve stem
6.0
Valve
Intake
0.02
0.05
0.10
Exhaust
0.03
0.07
0.15
Inclination
45
45.5
Height
Intake
112.30
111.80
Exhaust
114.11
113.61
Free Height
51.0
50.0
Valve Spring
Working pre-tightening force/Working depth Kg/mm
27.2/44.2
Verticality
2
4
Contact width
0.9
1.3
Minor diameter
6.0
Valve Guide
Major diameter
11.0
Indentation depth
14.0
Convex value of valve stem
49.3
49.8
Oil Pump
Lateral clearance
Driving gear
0.08
0.14
Driven gear
0.06
0.12
Piston
Piston clearance
0.02
0.04
Lateral clearance
Ring No.1
0.02
0.06
0.1
Ring No.2
0.02
0.06
0.1
Piston Ring
Ring No.1
0.25
0.35
0.8
End clearance
Ring No.2
0.40
0.55
0.8
Oil control ring
0.10
0.40
1.0
Major diameter
22.0
Piston Pin
Indentation force Kg.
755
1750
Indentation temperature
Room temperature
Crankshaft
Internal clearance of crankshaft pin
0.02
0.05
0.1
Connecting Rod
Lateral clearance on big end
0.10
0.25
0.4
Generator
Toothed-belt
Radial clearance between valve
stem and valve guide
11-4
Items
Standard Value
Limit Value
Axial clearance
0.05
0.18
0.25
Crankshaft
Main shaft diameter
57
Connecting rod shaft diameter
45
Radial clearance of main shaft
0.02
0.04
0.1
Planeness of top surface
0.05
0.1
* 0.2
Cylinder Block
Total Height
290
0.1
Minor diameter of cylinder hole
86.50
86.53
Cylinder Block
Cylindricity of cylinder hole
0.01
Generator
Resistance of rotor coil
3
5
0.05 O.S.
11.05
11.07
0.25 O.S.
11.25
11.27
0.50 O.S.
11.50
11.52
Cylinder Head
0.30 O.S.
34.435
34.455
0.60 O.S.
34.735
34.755
0.30 O.S.
31.935
31.955
0.60 O.S.
32.235
32.255
Top surface lapping limit*Total lapping
of cylinder block and head
Secondary processing dimension of the
enlarging of mounting hole of valve guides
(intake valve and exhaust valve)
Secondary processing dimension of the
enlarging of round hole of intake valve seat
Secondary processing dimension of the en-
larging of round hole of exhaust valve seat
Remarks:
O.S.: Diameter increased
ENGINE
SPECIFICATION
11-5
ENGINE
SPECIFICATION
Tightening Torque
Fastening Location
Torque (Kg.M)
Generator and Ignition System
Fastening bolt of AC generator
2.4
Stay bolt
2.4
Pivot nut
2.3
Crankshaft pulley bolt
2.5
Spark plug
2.5
Ignition coil bolt
1.1
Timing toothed-belt
Lower front cover of timing toothed-belt
1.1
Tensioning pulley bolt
4.9
Tensioning wheel arm bolt
2.2
Automatic tensioning wheel bolt
2.4
Central pulley bolt
3.6
Tensioning wheel bracket
4.9
Rear cover of timing toothed-belt
1.1
Timing belt indicator
0.9
Toothed-belt wheel of oil pump
5.5
Crankshaft toothed-belt wheel bolt
12.0
Tensioner
B
1.9
Toothed-belt wheel of balancing shaft
4.6
Camshaft toothed-belt wheel bolt
9.0
Toothed-belt wheel of balancing shaft
4.6
Fuel System
Throttle
1.9
Fuel distributing pipe assembly
1.2
Intake manifold
Eye bolt of engine
1.9
Cooling water temperature sensor plug of engine
3.0
Water outlet port coupling bolt
2.0
Intake manifold bolt
2.0
Water temperature sensor
3.0
Exhaust manifold
Exhaust manifold cover bolt
1.4
Water inlet port coupling bolt
2.4
Exhaust manifold nut (M8)
3.0
Exhaust manifold nut (M10)
5.0
Cooling water bypass pipe connector bolt
2.4
Cooling water pipe assembly bolt
1.3
Thermostat shell bolt
2.4
Water pump bolt
1.4
Rocker Arm and Camshaft
Rocker cover bolt
0.4
Rocker arm and camshaft assembly bolt
3.2
Thrust cover screw
1.9
Cylinder head and valve
Cylinder head bolt
2.0
90 90
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