77d7eb28

3. Engine

The SOHC engine is an engine with one camshaft installed in a head of the block of cylinders.

General information

Type
All models The engine with four cylinders rowed, with water cooling, established cross in a forward part of the car. The drive of valves is carried out by one camshaft through hydraulic pushers put in action by a gear belt
Codes of engines:
– 14 NV
1,4 l (1389 cm3)
– 16 SV
1,6 l (1598 cm3)
– X16 SZ
1,6 l (1598 cm3) of "Ecotec"
– C16 NZ
1,6 l (1598 cm3) + catalyst
– C16 NZ2
1,6 l (1598 cm3) + catalyst
– 18 SV
1,8 l (1796 cm3)
– C18 NZ
1,8 l (1796 cm3) + catalyst
– 20 NE
2.0 l (1998 cm3)
– 20 SEH
2.0 l (1998 cm3) early SRi
– C20 NE
2.0 l (1998 cm3) + catalyst
Pistons:
Diameter (mm)
Course (mm)
– 14 NV
77,6
73,4
– 16 SV, C16 SV, C16 NZ and X16 SZ
79,0
81,5
– C16 NZ2
80,0
79,5
– 18 SV and C18 NZ
84,8
79,5
– 20 NE, 20 SEH and C20 NE
86,0
86,0
Extent of compression:
– 14 NV
9,4: 1
– 16 SV, X16 SZ, 18 SV and 20 SEH
10,0: 1
– C16 NZ, C16 NZ2, C18 NZ, 20 NE and C20 NE
9,2: 1
Maximum power:
– 14 NV
55 kW (75 h.p.) at 5600 rpm
– 16 SV
60 kW (82 h.p.) at 5400 rpm
– X16 SZ
52 kW (71 h.p.) at 5000 rpm
– C16 NZ and C16 NZ2
55 kW (75 h.p.) at 5200 rpm
– 18 SV and C18 NZ
66 kW (90 h.p.) at 5400 rpm
– 20 NE and C20 NE
85 kW (116 h.p.) at 5200 rpm
– 20 SEH
95 kW (129 h.p.) at 5600 rpm
Maximum torque:
– 14 NV
108 Nanometer at 3000 rpm
– X16 SZ
128 Nanometer at 2800 rpm
– 16 SV
130 Nanometer at 2600 rpm
– C16 NZ and C16 NZ2
125 Nanometer at 2800 rpm
– 18 SV
148 Nanometer at 2800 rpm
– C18 NZ
145 Nanometer at 3000 rpm
– 20 NE
175 Nanometer at 2600 rpm
– 20 SEH
180 Nanometer at 4600 rpm
– C20 NE
170 Nanometer at 2600 rpm
Operating procedure of cylinders:
all models 1 – 3 – 4 – 2 (the cylinder No. 1 is located from a gear belt)

Block of cylinders
Material
Cast iron
   • the most admissible ovality of cylinders
0,013 mm
   • the most admissible conicity of cylinders
0,013 mm
   • the most admissible boring of cylinders
0,5 mm

Bent shaft and bearings
Number of radical bearings
5
Diameter of radical necks, mm:
– 14 NV, 16 SV, C16 NZ and X16 SZ
   • nominal
54,980 – 54,997
   • increased 0,25 mm
54,730 – 54,747
   • increased 0,50 mm
54,482 – 54,495
C16 NZ2, 18 SV, C18 NZ, 20 NE, C20 NE and 20 CEH
 
   • nominal
57,947 – 57,995
   • increased 0,25 mm
57,732 – 57,745
   • increased 0,50 mm
57,482 – 57,495
Color tag of inserts of radical bearings:
In a cover
In the block of cylinders
– 14 NV, 16 SV, C16 NZ and X16 SZ
   • nominal
Brown
Green
   • uuvelichenny 0,25 mm
Brown/blue
Green/blue
   • increased 0,50 mm
Brown/white
Green/white
– C16 NZ2, 18 SV, C18 NZ, 20 NE, C20 NE and 20 CEH
   • nominal
Brown/green/white
   • increased 0,25 mm
Brown/blue and Green/blue
   • increased 0,50 mm
Brown/white and Green/white
Width of the central (persistent) radical neck, mm:
– 14 NV, 16 SV, C16 NZ and X16 SZ
   • nominal
26,000 – 26,052
   • increased 0,25 mm
26,200 – 26,252
   • increased 0,50 mm
26,400 – 26,452
– C16 NZ2, 18 SV, C18 NZ, 20 NE, C20 NE and 20 CEH
   • nominal
25,950 – 26,002
   • increased 0,25 mm
26,150 – 26,202
   • increased 0,50 mm
26,350 – 26,402
Diameter of a conrod neck, mm:
– 14 NV, 16 SV, C16 NZ and X16 SZ
   • nominal
42,971 – 42,987
   • increased 0,25 mm
42,721 – 42,737
   • increased 0,50 mm
42,741 – 42,487
– C16 NZ2, 18 SV, C18 NZ, 20 NE, C20 NE and 20 CEH
   • nominal
48,970 – 48,988
   • increased 0,25 mm
48,720 – 48,738
   • increased 0,50 mm
48,470 – 48,488
Color tag of inserts of conrod bearings (all models):
– nominal
No
– increased 0,25 mm
Blue
– increased 0,50 mm
White
Ovality of radical and conrod necks (all models)
At most 0,04 mm
Gap in radical bearings, mm:
– 14 NV, 16 SV, C16 NZ and X16 SZ
0,017 – 0,047
– C16 NZ2, 18 SV, C18 NZ, 20 NE, C20 NE and 20 CEH
0,015 – 0,040
Gap in conrod bearings, mm:
– 14 NV, 16 SV, C16 NZ and X16 SZ
0,019 – 0,071
– C16 NZ2, 18 SV, C18 NZ, 20 NE, C20 NE and 20 CEH
0,006 – 0,031
Axial side play of a bent shaft, mm:
– 14 NV, 16 SV, C16 NZ and X16 SZ
0,1 – 0,2
– C16 NZ2, 18 SV, C18 NZ, 20 NE, C20 NE and 20 CEH
0,050 – 0,152
Side side play of a rod (all models), mm
0,07 – 0,24

Diameters of pistons and cylinders, mm
Diameter of the cylinder
Diameter of the piston
ID tag
14 NV:
– nominal size 1
77,56
77,54
6
 
77,57
77,55
7
 
77,58
77,56
8
 
77,60
77,58
00
– nominal size 2
77,59
77,57
99
 
77,62
77,60
02
– the repair size is 0,5 mm
78,02
78,05
7 +0,5
16 SV, C16 NZ and X16 SZ:
– nominal size 1
78,95
78,93
5
 

78,96

78,94
6
 

78,97

87,95
7
 
87,98
78,96
8
– nominal size 2

78,99

78,97
99
 

79,00

78,98
00
 
79,01
78,99
01
 
79,02
79,00
02
– nominal size 3
79,03
79,01
03
 

79,04

79,02
04
 
79,05
79,03
05
 

79,06

79,04
06
– nominal size 4
79,07
79,05
07
 

79,08

79,06
08
 

79,09

79,07
09
 
79,10
79,08
1
 
79,48
79,45
7 +0,5
C16 NZ2:

– nominal size

79,98
98
 
79,90
99
 
80,00
00
 

80,01

01
 
80,02
02
18 SV and C18 NZ:
– nominal size 1
84,78
84,76
8
– nominal size 2
84,79
84,77
99
 

84,80

84,78
00
 
84,81
84,79
01
 
84,82
84,80
02
– the repair size is 0,5 mm
85,27
85,25
7 +0,5
20 NE, C20 NE and 20 SEN:
– nominal size 1
85,98
85,96
8

– nominal size 2

85,99
85,97
99
 
86,00
85,98
00
 
86,01
85,99
01
 
86,02
86,00
02
– the repair size is 0,5 mm
86,47
86,45
7 +0,5
Piston gap in the cylinder (all models)
0,02 – 0,04 mm

Piston rings

Quantity on one piston (all models)
2 compression and 1 oil scraper
Gap in the lock of a piston ring, mm:
– compression
0,3 – 0,5
– oil scraper (top and lower ring)
0,4 – 1,4
– shift of locks of rings in relation to the lock of an oil scraper ring
180 °

Head of the block of cylinders

Material (all models)
Light alloy
The most admissible neploskosnost of the lower surface of a head of the block of cylinders (all models)
0,025 mm
Height of a head of the block of cylinders (all models)
96,00 ± 0,25 mm
Width of a saddle of the valve, mm:
– 14 NV, 16 SV, C16 NZ, X16 SZ and C16 NZ2:
   • inlet
1,3 – 1,5
   • final
1,6 – 1,8
– 18 SV, C18 NZ, 20 NE, C20 NE and 20 CEH:
   • inlet
1,0 – 1,5
   • final
1,7 – 2,2

Camshaft


Diameter of necks of bearings of a cam-shaft
Normal, mm
Repair 0,1 mm

Diameter of the bearing of a cam-shaft:

– 14 NV, 16 SV, C16 NZ and X16 SZ
   • No. 1
39,500 – 39,525
 
   • No. 2
39,750 – 39,775
 
   • No. 3
40,000 – 40,025
 
   • No. 4
40,250 – 40,275
 
   • No. 5
40,500 – 40,525
 
– C16 NZ2, 18 SV, C18 NZ, 20 NE, C20 NE and 20 CEH:
   • No. 1
42,500 – 42,525
42,400 – 42,425
   • No. 2
42,750 – 42,775
42,650 – 42,675
   • No. 3
43,000 – 43,025
42,900 – 42,925
   • No. 4
43,250 – 43,275
43,150 – 43,175
   • No. 5
43,500 – 43,525
43,400 – 43,425
Raising of a cam, mm:
– 14 NV (inlet and final)
6,12
 
– 16 SV and C16 NZ:
   • inlet
5,61
 
   • final
6,12
 
– C16 NZ2, 18 SV and C18 NZ:
   • inlet
6,01
 
   • final
6,39
 
– C20 NE and 20 NE (inlet and final)
6,67
 
– 20 SEN (inlet and final)
6,70
 
The most admissible curvature of an axis of the camshaft (all models)
0,04 mm
 
Axial side play (all models)
0,09 – 0,21 mm
 

Gear belt (engines without automatic mechanism of a tension)

Measurement of a tension of a belt by means of the special Opel KM-51 0-A tool:
– 14 NV, 16 SV and C16 NZ:
   • new belt cold
5,5
   • new belt, warm
8,0
   • the belt which was in the use cold
4,0
   • the belt which was in the use warm
7,0
– 18 SV, C18 NZ, 20 NE, C20 NE and 20 SEH:
   • new belt cold
4,5
   • new belt, warm
7,5
   • the belt which was in the use cold
2,5
   • the belt which was in the use warm
7,0

Valves and guides of valves

 
Inlet
Final
Full length of the new valve, mm:
– 14 NV
105,0
105,0
– 16 SV, X16 SZ and C16 NZ
101,5
101,5
– C16 NZ2
104,2
104,2
– 18 SV, C18 NZ, 20 NE, C20 NE and 20 SEH
104,2
104,0
Full minimum length of the valve, mm:
– 14 NV
104,6
104,6
– 16 SV, X16 SZ and C16 NZ
101,1
101,1
– C16 NZ2
103,8
103,8
– 18 SV, C18 NZ, 20 NE, C20 NE and 20 SEH
103,8
103,6
Diameter of a plate of the valve, mm:
– 14 NV
33,0
29,0
– 16 SV, X16 SZ, C16 NZ and C16 NZ2
38,0
31,0
– 18 SV, C18 NZ, 20 NE, C20 NE and 20 SEH
41,8
36,5
Diameter of a core of the valve (all engines), mm:
– nominal
6,988 – 7,012
6,978 – 6,992
– the repair size is +0,075 mm
7,073 - 7,087
7,053 – 7,067
– the repair size is +0,150 mm
7,148 – 7,162
7,128 – 7,142
– the repair size is +0,250 mm
7,248 – 7,262
7,228 – 7,242
Internal diameter of the directing valve plug (all engines), mm:
– nominal
7,030 – 7,050
 
– the repair size is +0,075 mm
7,105 – 7,125
 
– the repair size is +0,150 mm
7,180 – 7,200
 
– the repair size is +0,250 mm
7,280 – 7,300
 
Valve gap in the directing tulka (all engines), mm:
– inlet
0,018 – 0,052
 
– final
0,038 – 0,072
 
Corner of a working facet of a saddle of the valve:
all engines
44 °
Gap of valves:
all engines
Automatic adjustment by hydraulic pushers of valves

Flywheel

The most admissible side beating of a gear wreath of a flywheel (all engines)
0,5 mm
The maximum size of regrinding of the surface interfaced to a clutch plate
0,3 mm


Lubrication system

Gaps in the oil pump:
– between internal and external rotors (all engines)
0 – 0,2 mm
– an axial side play between the case and a rotor:
   • 14 NV, 16 SV, C16 NZ and X16 SZ
0,08 – 0,15 mm
   • C16 NZ2, 18 SV, C18 NZ, C20 NE and 20 SEH
0,03 – 0,10 mm
Oil pressure on idling turns on the warm engine (all engines)
1,5 bars

Tightening moments

Zabornik of the warmed-up air to a final collector
8 Nanometer
Fastening of the generator and inlet collector to an arm:
– 1,4 and 1,6 l except C16 NZ2
20 nanometers
– L C16 NZ2 1,8 and 2,0
18 Nanometer
Bolts of fastening of the generator to an arm (M8)
30 Nanometer
Bolts of fastening of the generator to an arm (M10)
40 Nanometer
Bolts of fastening of the generator to a bracket
25 Nanometer
Fastening of a cover of the conrod bearing:
– 1,4 and 1,6 l except C16 NZ2:
   • stage 1
25 Nanometer
   • stage 2
To tighten on a corner 30 °
– L C16 NZ2 1,8 and 2,0:
   • stage 1
35 Nanometer
   • stage 2
To tighten on a corner 45 °
   • stage 3
To tighten on a corner 15 °
Cover of a head of the block of cylinders
8 Nanometer
Camshaft pulley
45 Nanometer
Persistent plate of fixing of the camshaft
8 Nanometer
Branch pipe to a thermostat casing:
 
– L C16 NZ2 1,8 and 2,0
8 Nanometer
The water pump to the block of cylinders:
 
– 1,4 and 1,6 l except C16 NZ2 (M6)
8 Nanometer
– C16 NZ2 1,8 and 2,0 of l (M8)
25 Nanometer
Sensor of provision of a bent shaft:
– L C16 NZ2 1,8 and 2,0
13 Nanometer
Bolts of fastening of a head of the block цилиндров*:
– 1,4 and 1,6 l except C16 NZ2:
   • stage 1
25 Nanometer
   • stage 2
To tighten on a corner 60 °
   • stage 3
To tighten on a corner 60 °
   • stage 4
To tighten on a corner 60 °
– L C16 NZ2 1,8 and 2,0:
   • stage 1
25 Nanometer
   • stage 2
To tighten on a corner 90 °
   • stage 3
To tighten on a corner 90 °
   • stage 4
To tighten on a corner 90 °
Pulleys of an auxiliary driving and gear belt to a bent shaft:
– 1,4 and 1,6 l except C16 NZ2:
   • stage 1
55 Nanometer
   • stage 2
To tighten on a corner 45 °
   • stage 3
To tighten on a corner 15 °
Pulleys of an auxiliary driving and gear belt to a bent shaft
20 Nanometer
Pulley of an auxiliary gear belt, driving to pulley
20 Nanometer
The mechanism of a tension of a driving belt to an arm:
– 1,4 and 1,6 l except C16 NZ2
20 Nanometer
– L C16 NZ2 1,8 and 2,0
18 Nanometer
Arm of a support of the power unit to the block of cylinders
60 Nanometer
Arm to an arm of a support of the power unit
60 Nanometer
Arm of a support of the power unit to the lower frame
40 Nanometer
Arm of the pump of the amplifier of steering to an engine arm
60 Nanometer
Arm of a support power to a side frame
65 Nanometer
Final collector to a head of the block of cylinders
22 Nanometer
Reception exhaust pipe to a final collector
25 Nanometer
Drive plate to a bent shaft
60 Nanometer
Flywheel to a cranked valu*:
– 1,4 and 1,6 l except C16 NZ2:
   • stage 1
35 Nanometer
   • stage 2
To tighten on a corner 30 °
   • stage 3
To tighten on a corner 15 °
– L C16 NZ2 1,8 and 2,0:
   • stage 1
65 Nanometer
   • stage 2
To tighten on a corner 30 °
   • stage 3
To tighten on a corner 15 °
Forward casing of a gear belt to a back casing
4 Nanometer
The pumping-up fuel pump to a cover of a head of the block of cylinders
18 Nanometer
The directing plug and the release bearing to the transmission
22 Nanometer
Thermofilter plugs to a head of the block of cylinders
30 Nanometer
Inlet collector to a head of the block of cylinders
22 Nanometer
The detonation sensor to the block of cylinders (X16 SZ)
13 Nanometer
Bolts of fastening of covers radical подшипника*:
– stage 1
50 Nanometer
– stage 2
To tighten on a corner 45 °
– stage 3
To tighten on a corner 15 °
Oil filter to the oil pump / block of cylinders
6 Nanometer
Arm of a maslopriyemny pipe to the block of cylinders
6 Nanometer
Maslopriyemny pipe to the oil pump
8 Nanometer
Oil pipelines to a radiator
22 Nanometer
The oil pressure sensor to the oil pump:
– 1,4 and 1,6 l except C16 NZ2
30 Nanometer
– L C16 NZ2 1,8 and 2,0
40 Nanometer
Perepuskna the valve to the oil pump
30 Nanometer
Back cover to the oil pump
6 Nanometer
The oil pump to the block of cylinders
6 Nanometer
The oxygen sensor to a final collector
30 Nanometer
Arm of the pump of the amplifier of steering:
– L C16 NZ2 1,8 and 2,0.
18 Nanometer
The right arm of fastening of the power unit to the lower frame.
65 Nanometer
Arm to the generator
25 Nanometer
Spark plugs
25 Nanometer
Starter to the block of cylinders (M10)
45 Nanometer
Starter to the block of cylinders (M12)
60 Nanometer
Oil pallet:
– 1,4 and 1,6 l except C16 NZ2
8 Nanometer
– L C16 NZ2 1,8 and 2,0
15 Nanometer
Masloslivny stopper
55 Nanometer
Arm to the block of cylinders
35 Nanometer
The sensor of the index of temperature of cooling liquid to a head of the block of cylinders
20 Nanometer
Thermostat casing:
– 1,4 and 1,6 l except C16 NZ2
10 Nanometer
– L C16 NZ2 1,8 and 2,0
15 Nanometer
The mechanism of a tension of a gear belt to the oil pump:
1,4 and 1,6 l except C16 NZ2
55 Nanometer
Casing of a gear belt to the oil pump / cover of a head of the block of cylinders:
– 1,4 and 1,6 l except C16 NZ2
12 Nanometer
– L C16 NZ2 1,8 and 2,0
6 Nanometer
Pulley of a gear belt to a bent shaft:
– L C16 NZ2 1,8 and 2,0
6 Nanometer
   • stage 1
130 Nanometer
   • stage 2
To tighten on a corner 40 – 50 °
Bolts of fastening of the transmission to the engine (M10)
45 Nanometer
Bolts of fastening of the transmission to the engine (M12)
60 Nanometer

* It is necessary to use only new bolts. The moments of tightening of bolts of fastening of a head of the block of cylinders are specified only for bolts of the latest modification. When using bolts of early modification, the moment of tightening of bolts needs to be specified at the dealer of Opel.