Engine codes:
- 14 NV - 1.4 l. (1389 cm3)
- 16 SV - 1.6 l. (1598 cm3)
- X16SZ - 1.6 l. (1598 cm3)
Type motors "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)
- 20SEH - 2.0 l. (1998 cm3) + early SRi
- C20 NE - 2.0 l (1998 cm3) + catalyst
Pistons | Diameter (mm) | move (mm) |
14 NV | 77.6 | 73.4 |
16 SV, C16 SV, C16 NZ and X16 SZ | 79.0 | 81.5 |
C16NZ2 | 80.0 | 79.5 |
18 SV and C18 NZ | 84.8 | 79.5 |
20 NE, 20 SEH and C20 NE | 86.0 | 86.0 |
Compression ratio:
- 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
Max Power:
- 14 NV - 55 kW (75 hp) at 5600 rpm
- 16 SV - 60 kW (82 hp) at 5400 rpm
- X16 SZ - 52 kW (71 hp) at 5000 rpm
- C16 NZ and C16 NZ2 - 55 kW (75 hp) at 5200 rpm
- 18 SV and C18 NZ - 66 kW (90 hp) at 5400 rpm
- 20 NE and C20 NE - 85 kW (116 hp) at 5200 rpm
- 20 SEH - 95 kW (129 hp) at 5600 rpm
Max Torque:
- 14 NV - 108 Nm at 3000 rpm
- X16 SZ - 128 Nm at 2800 rpm
- 16 SV - 130 Nm at 2600 rpm
- C16 NZ and C16 NZ2 - 125 Nm at 2800 rpm
- 18 SV - 148 Nm at 2800 rpm
- C18 NZ - 145 Nm at 3000 rpm
- 20 NE - 175 Nm at 2600 rpm
- 20 SEH - 180 Nm at 4600 rpm
- C20 NE - 170 Nm at 2600 rpm
The order of operation of the cylinders:
- All models - 1-3-4-2 (#1 cylinder next to toothed drive belt)
Cylinder block
- Material - Iron
- The maximum allowable ovality of the cylinder channels is 0.013 mm
- The maximum allowable taper of the cylinder channels is 0.013 mm
- The maximum allowable cylinder bore is 0.5 mm
Crankshaft and bearings
- Number of main bearings - 5
Main journal diameter (mm):
- 14 NV, 16 SV, C16 NZ and X16 SZ
- Standard - 54.980-54.997
- Repair size 0.25 mm - 54.730-54.747
- Repair size 0.50 mm - 54.482-54.495
- C16 NZ2, 18 SV, C18 NZ, 20 NE, C20 NE and 20 SEH
- Standard - 57.974-57 995
- Repair size 0.25 mm - 57.732-57.745
- Repair size 0.50 mm - 57.482-57.495
Color coding of main bearing shells | Lid insert | Liner in the block of cylinders |
14NV, 16SV, C16NZ and X16SZ | ||
Standard | Brown | Green |
Repair size 0.25 mm | Brown/blue | Green/blue |
Repair size 0.50 mm | brown/white | Green/white |
C16 NZ2, 18 SV, C18 NZ, 20 NE, C20 NE and 20 SEH | ||
Standard | Brown/green/white | |
Repair size 0.25 mm | Brown/Blue and Green/Blue | |
Repair size 0.50 mm | Brown/White and Green/White |
Center Width (stubborn) root neck (mm):
- 14 NV, 16 SV, C16 NZ and X 16 SZ:
- Standard - 26.000-26.052
- Repair size 0.25 mm - 26.200-26.252
- Repair size 0.50 mm - 26.400-26.452
- C16 NZ2, 18 SV, C18 NZ, 20 NE, C20 NE and 20 SEH:
- Standard - 25.950-26.002
- Repair size 0.25 mm - 26.150-26.202
- Repair size 0.50 mm - 26.350-26.402
Crankpin diameter (mm):
- 14 NV, 16 SV, C16 NZ and X16 SZ:
- Standard - 42.971-42.987
- Repair size 0.25 mm - 42.721-42.737
- Repair size 0.50 mm - 42.471-42.487
- C16 NZ2, 18 SV, C18 NZ, 20 NE, C20 NE and 20 SEH:
- Standard - 48.970-48.988
- Repair size 0.25 mm - 48.720-48.738
- Repair size 0.50 mm - 48.470-48.488
Color coding of connecting rod bearing shells (all models):
- Standard - No
- Repair size 0.25 mm - Blue
- Repair size 0.50 mm - White
Ovality of main and connecting rod journals (all models) - 0.04 mm maximum
Permissible main bearing movement (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 SEH - 0.015-0.040
Permissible movement of the connecting rod bearing (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 SEH - 0.006-0.031
Axial play of the crankshaft (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 SEH - 0.050-0.152
Side play of the connecting rod (mm) (all models) — 0.07-0.24
Clearance between piston and cylinder wall (mm) (all models) — 0.02-0.04
Piston rings
Quantity (on the piston) (all models) - 2 compression, 1 oil scraper
Ring lock gap (mm):
- Compression - 0.3-0.5
- Oil scraper (top and bottom) — 0.4-1.4
- Displacement of ring cuts (to the cut of the adjacent ring) — 180°
See Chapter 32 for the oil ring.
Cylinder head
Material (all models) - light alloy
The maximum allowable deformation of the surface under the gasket (all models) — 0.025 mm
Cylinder head height (all models) — 96.00±0.25 mm
Valve seat width (mm):
- 14 NV, 16 SV, C16 NZ, X16 SZ and C16 NZ2:
- Inlet - 1.3-1.5
- Graduation - 1.6-1.8
- 18 SV, C18 NZ, 20 NE, C20 NE and 20 SEH:
- Etsk - 1.0-1.5
- Graduation - 17-2.2
Camshaft
Cam ovality (mm):
- 14 NV (inlet and outlet) — 6.12
- 16 SV and C16 NZ:
- Inlet - 5.61
- Graduation - 6.12
- C16 NZ2, 18 SV and C18 NZ:
- Inlet - 6.01
- Graduation - 6.39
- 320NE and 20NE (inlet and outlet) — 6.67
- 20 SEH (inlet and outlet) — 6.70
Maximum allowable camshaft deflection (mm) (all models) — 0.04
Axial clearance (mm) (all models) — 0.09-0.21
Toothed drive belt (motors without automatic tension)
Tensioning with a template Opel KM-510-A (see chapter 11):
- 14NV, 16SV and C16NZ:
- New belt, cold - 5.5
- New belt, warm - 8.0
- Not a new belt, cold - 4.0
- Not a new belt, warm - 7.0
- 18 SV, C18 NZ, 20 NE, C20 NE and 20 SEH:
- New belt, cold - 4.5
- New belt, warm - 7.5
- Not a new belt, cold - 2.5
- Not a new belt, warm - 7.0
Valves and guides
Flywheel
The maximum allowable lateral runout of the starter ring gear (all models) — 0.5 mm
The maximum depth of the material removed during regrinding from the friction surface of the coupling material (all models) — 0.3 mm
Lubrication system
Lubricant Type/Specification - See Lubricants and Fluids in "weekly checks".
Amount of Lubrication Required - See Specifications in Section 1.
Oil pump clearances:
Gap between the teeth of the inner and outer gears (backlash) (all models) — 0.0-0.2 mm
Gap between casing and gear (axial clearance):
- 14 NV, 16 SV, C16 NZ and X16 SZ - 0.08-0.15 mm
- C16 NZ2, 18 SV, C18 NZ, 20 NE, C20 NE and 20 SEH - 0.03-0.10 mm
Idle oil pressure (engine warm) (all models) — 1.5 bar
Tightening torques, Nm
Note: Use new bolts where noted (*). The tightening torques for the cylinder head bolts apply only to the newest ones. Older bolts may require different tightening torques. Consult your supplier.
Inlet air heating chamber to the exhaust manifold - 8
Alternator and intake manifold to brackets:
- 1.4 and 1.6 liters, (except C16 NZ2) — 20
- C16 NZ2, 1.8 and 2.0 liters - 18
Generator to bracket (M8) — 30
Generator to bracket (M10) — 40
Generator to connecting bracket - 25
Connecting rod bearing cap:*
- 1.4 and 1.6 liters, (except C16 NZ2)
- Stage 1 - 25
- Stage 2 - Tighten 30°
- 16 NZ2, 1.8 and 2.0 liters:
- Stage 1 - 35
- Stage 2 - Tighten 45°
- Stage 3 - Tighten 15°
Cover to camshaft housing - 8
Pulley to camshaft - 45
Camshaft Thrust Plate - 8
Coolant outlet to thermostat housing:
- C16 NZ2, 1.8 and 2.0 liters - 8
Coolant pump to cylinder block:
- 1.4 and 1.6 liters, (except C16 NZ2) (M6) — 8
- С16 NZ2, 1.8 and 2.0 liters (M8) — 25
Crankshaft sensor wheel:
- C16 NZ2, 1.8 and 2.0 liters - 13
Head to cylinder block:*
- 1 4 and 1.6 liters, (except C16 NZ2):
- Stage 1 - 25
- Stage 2 - Tighten 60°
- Stage 3 - Tighten 60°
- Stage 4 - Tighten 60°
- C16 NZ2, 1.8 and 2.0 liters:
- Stage 1 - 25
- Stage 2 - Tighten 90°
- Stage 3 - Tighten 90°
- Stage 4 - Tighten 90°
Drive pulley (ribbed) belt/toothed belt drive to crankshaft:*
- 1.4 and 1.6 liters, (except C16 NZ2):
- Stage 1 - 55
- Stage 2 - Tighten 45°
- Stage 3 - Tighten 15°
Drive belt pulley to toothed belt drive - 20
Drive belt tensioner (ribbed) to the cylinder block - 20
Drive belt tensioner (ribbed) to holder:
- 1.4 and 1.6 liters, (except C16 N22) — 20
- C16 NZ2, 1.8 and 2.0 liters - 18
Engine support bracket to cylinder block - 60
Engine support bracket to transmission - 60
Mounting bracket to the engine support bracket - 60
Arm of fastening of the engine to a casing of a forward axis — 40
Power steering pump holder to engine mount bracket - 60
Bracket for mounting the engine to the side of the frame - 65
Exhaust manifold to cylinder head - 22
Exhaust pipe to manifold - 25
Flexible plate to the crankshaft - 60
Flywheel to crankshaft:*
- 1.4 and 1.6 liters, (except C16 NZ2):
- Stage 1 - 35
- Stage 2 - Tighten 30°
- Stage 3 - Tighten 15°
- C16NZ2, 1.8 and 2.0 liters:
- Stage 1 - 65
- Stage 2 - Tighten 30°
- Stage 3 - Tighten 15°
Front cover of the toothed drive belt to the rear cover - 4
Fuel pump to the camshaft housing - 18
Guide sleeve, release bearing to transmission - 22
Sleeves of a heat-resistant guard to a head of the block of cylinders — 30
Intake manifold to cylinder head - 22
Knock sensor to cylinder block (X16 SZ) — 13
Main bearing cap:*
- Stage 1 - 50
- Stage 2 - Tighten 45°
- Stage 3 - Tighten 15°
Oil filter to oil pump/cylinder block - 6
Bracket for oil pickup tube pump to the cylinder block - 6
Reception tube to the oil pump - 8
Oil lines to the radiator - 22
Oil pressure sensor to oil pump:
- 1.4 and 1.6 liters, (except C16 NZ2) — 30
- C16 NZ2, 1.8 and 2.0 liters - 40
Reducing oil valve to the oil pump - 30
Cover to the oil pump - 6
Oil pump to cylinder block - 6
Oxygen sensor to the exhaust manifold - 30
Power steering pump bracket to holder:
- C16 NZ2, 1.8 and 2.0 liters - 18
Power steering pump to holder - 25
Right engine mounting bracket to lower frame - 65
Bracket to the generator - 25
Spark plugs - 25
Starter to cylinder block (M10) — 45
Starter to cylinder block (M12) — 60
Pallet:
- 1.4 and 1.6 liters, (except C16 NZ2) — 8
- C16 NZ2, 1.8 and 2.0 liters - 15
Pan drain plug - 55
The holder to the block of cylinders — 35
The gauge of the index of temperature of a cooling liquid to a head of the block of cylinders — 20
thermostat housing:
- 1.4 and 1.6 liters, (except C16 NZ2) — 10
- C16 NZ2, 1.8 and 2.0 liters - 15
Mechanism for tensioning the toothed drive belt to the oil pump:
- 1 4 and 1.6 liters, (except C16 NZ2) — 55
Timing belt cover to oil pump/camshaft housing:
- 1 4 and 1.6 liters, (except C16 NZ2) — 12
- C16 NZ2, 1.8 and 2.0 liters - 6
Toothed drive belt sprocket to crankshaft:
- C16 NZ2, 1.8 and 2.0 liters:
- Stage 1 - 130
- Stage 2 - Tighten 40°-50°
Transmission to engine (M10) — 45
Transmission to engine (M12) — 60
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