Single Overhead Camshaft Engine Characteristics (Opel Astra F)

Engine (General information)

Type - Four-cylinder in-line, water-cooled, with single overhead camshaft and hydraulic valve lifters

Engine code assigned by the manufacturer:

• Carburetor engine 1.4 l - 14 NV
• 1.4L Single Point Injection Engine - C 14 NZ
• 1.4L engine with multipoint injection - C 14 SE
• 1.6L Single Point Injection Engine - C 16 NZ
• 1.6L engine with multipoint injection - C 16 SE
• Engine 1.6 l - C 18 NZ
• Engine 2.0 l - C 20 NE

Cylinder diameter:

• 1.4L Engine - 77,600mm
• 1.6L Engine - 79,000mm
• 1.8L Engine - 84.800mm
• 2.0L Engine - 86,000mm

Piston stroke:

• 1.4L Engine - 73,400mm
• 1.6L Engine - 81,500mm
• 1.8L Engine - 79,500mm
• 2.0L Engine - 86,000mm

Working volume:

• Engine 1.4 l - 1389 cm³
• Engine 1.6 l - 1598 cm³
• Engine 1.8 l - 1796 cm³
• Engine 2.0 l - 1998 cm³

Firing sequence: 1-3-4-2 (Cylinder #1 is located at the distributor belt)

Direction of rotation of the crankshaft - Clockwise

Compression ratio:

• Engines 14 NV and C 14 NZ - 9.4
• Engine C 14 SE - 10.0
• Engine 16 NZ, engines C 18 NZ and C 20 NE - 9.2
• Engine C 16 SE - 9.8

Max. power:

• Engine 14 NV - 55 kW at 5800 rpm
• Engine C 14 NZ - 44 kW at 5200 rpm
• Engine C 14 SE - 60 kW at 5800 rpm
• Engine C 16 NZ - 55 kW at 5200 rpm
• Engine C 16 SE - 74 kW at 5800 rpm
• Engine C 18 NZ - 66 kW at 5400 rpm
• Engine C 20 NE - 85 kW at 5400 rpm

Maximum torque

• Engine 14 NV - 10 Nm at 3000 rpm
• Engine C 14 NZ - 103 Nm at 2800 rpm
• Engine C 14 SE - 113 Nm at 3400 rpm
• Engine C 16 NZ - 125 Nm at 2800 rpm
• Engine C 16 SE - 135 Nm at 3400 rpm
• Engine C 18 NZ - 145 Nm at 3000 rpm
• Engine C 20 NE - 170 Nm at 2600 rpm

Max. compression pressure difference - 1 bar

Cylinder block, cast iron

• Maxim, cylinder ovality - 0.013 mm
• Max. cylinder taper - 0.013 mm
• Max. allowable oversize during boring - 0.500 mm

Cylinder diameter:

	Diameter	Marking
1.4L engines:
1st nominal	77.555-77.565 mm	6
	77.565-77.575 mm	7
	77.575-77.585 mm	8
2nd nominal	77.585-77.595 mm	99
	77.595-77.605 mm	00
	77.605-77.615 mm	01
	77.615-77.625 mm	02
4th nominal	77.665-77.675 mm	07
Exceeding the size by 0.5 mm	78.065-78.075 mm	7+0,5
1.6L engines:
1st nominal	78.945-78.955 mm	5
	78.955-78.965 mm	6
	78.965-78.975 mm	7
	78.975-78.985 mm	8
2nd nominal	78.985-78.995 mm	99
	78.995-79.005 mm	00
	79.005-79.015 mm	01
	79.015-79.025 mm	02
3rd nominal	79.025-79.035 mm	03
	79.035-79.045 mm	04
	79.045-79.055 mm	05
	79.055-79.065 mm	06
4th nominal	79.065-79.075 mm	07
	79.075-79.085 mm	08
	79.085-79.095 mm	09
	79.095-79.105 mm	1
Exceeding the size by 0.5 mm	79.465-79.475 mm	7+0,5
	79.475-79.485 mm	8+0,5
	79.485-79.495 mm	9+0,5
	79.495-79.505 mm	0+0,5
1.8L Engine:
2nd nominal	84,780 mm	8
	84,790 mm	99
	84,800 mm	00
	84,810 mm	01
	84,820 mm	02
Exceeding the size by 0.5 mm	85,270 mm	7+0,5
2.0L Engine:
2nd nominal	85,980 mm	8
	85,990 mm	99
	86,000 mm	00
	86,010 mm	01
	86,020 mm	02
Exceeding the size by 0.5 mm	86,470 mm	7+0,5

Crankshaft and bearings

Number of main bearings - 5

Main journal diameter:	1.4 and 1.6 l	1.8 and 2.0 l
Standard	54.972-54.985 mm	57.982-57.995 mm
Undersized by 0.25mm	54.722-54.735 mm	57.732-57.745 mm
Undersized by 0.50 mm	54.472-54.485 mm	57,482-57,495 mm

Color marking of main bearing shells (for all models):	Bearing housing cover	Cylinder head
Standard	Brown	Green
Undersized by 0.25mm	Brown/blue	Green/blue
Undersized by 0.50 mm	Brown/white	Green/white

Average root neck width:	1.4 and 1.6 l	1.8 and 2.0 l
Standard	26,000-26,052 mm	25,850-25,900 mm
Undersized by 0.25 mm	26,200-26,252 mm	26,050-26,100 mm
Undersized by 0.50 mm	26,400-26,452 mm	26,250-26,300 mm

Big end bearing shell diameter:	1.4 and 1.6 l	1.8 and 2.0 l
Standard	42.971-42.987 mm	48,970-48,988 mm
Undersized by 0.25mm	42.271-42.737 mm	48,720-48,738 mm
Undersized by 0.50 mm	42.471-42.487 mm	48,470-48,488 mm

Color coding of big end bearing shells (for all models):

• Standard - None
• Undersized by 0.25mm - Blue
• Undersized by 0.50mm - White

Max. out-of-roundness of bearing journal and crankshaft main journal (for all engines) — 0.040 mm

Crankshaft main bearing working clearance:

• 1.4 and 1.6 l - 0.025 mm - 0.050 mm
• 1.8 and 2.0 l - 0.015 mm - 0.040 mm

Big end bearing operating clearance:

• 1.4 and 1.6 l - 0.019 mm - 0.071 mm
• 1.8 and 2.0 l - 0.006 mm - 0.031 mm

Crankshaft offset along the axis:

• 1.4 and 1.6 l - 0.100 mm - 0.200 mm
• 1.8 and 2.0 l - 0.050 mm - 0.152 mm

Connecting rod offset along the axis:

• 1.4 and 1.6 l - 0.110 mm - 0.240 mm
• 1.8 and 2.0 l - 0.070 mm - 0.240 mm

Pistons

Clearance between piston skirt and cylinder wall:

• In the new engine - 0.020 mm
• After boring - 0.010-0.030 mm

Note: Piston diameters: The pistons are marked with numbers corresponding to the cylinder bore diameters previously given. The corresponding piston diameter is 0.020 mm smaller than the corresponding cylinder bore diameter.

Piston rings

Number of rings (on one piston) — 2 compression, 1 oil scraper.

Piston ring gap:

• compression - 0.300-0.500 mm
• oil scraper (upper and lower sections) — 0.400-1.400 mm

Piston ring lock mixing* (relative to the average) — 180°

* For oil scraper ring cross-sections, see text.

Light alloy cylinder head

• Max. allowable deformation of the mating plane - 0.025 mm
• Overall height of cylinder head (from mating surfaces) — 96,000±0,100 mm

Valve seat chamfer width:	1.4 and 1.6 l	1.8 and 2.0 l
Intake	1,300-1,400 mm	1,000-1,500 mm
Exhaust	1,700-1,800 mm	1,700-2,200 mm

Camshaft

Camshaft journal diameter:

Engines 1.4 and 1.6 l:

• N 1 — 39.435-39.455 mm
• N 2 — 39.685-39.705 mm
• N 3 — 39.935-39.955 mm
• N 4 — 40.185-40.205 mm
• N 5 — 40.435-40.455 mm

Engines with a working volume of 1.8 and 2.0 l:	Standard	Lowered by 0.1 mm
N 1	42.455-42.470 mm	42.355-42.370 mm
N 2	42.705-42.720 mm	42.605-42.620 mm
N 3	42.955-42.970 mm	42.855-42.870 mm
N 4	43.205-43.220 mm	43.105-43.120 mm
N 5	43.455-43.470 mm	43.355-43.370 mm

Camshaft Bearing Diameter:

Engines 1.4 and 1.6 l:

• N 1 — 39.500-39.525 mm
• N 2 — 39.750-39.755 mm
• N 3 — 40.000-40.025 mm
• N 4 — 40.250-40.275 mm
• N 5 — 40.500-40.525 mm

Engines 1.8 and 2.0 l:	Standard	Lowered by 0.1 mm
N 1	42,500-42,525 mm	42,400-42,425 mm
N 2	42,750-42,755 mm	42,650-42,675 mm
N 3	43,000-43,025 mm	42,900-42,925 mm
N 4	43.250-43.275 mm	43.150-43.175 mm
N 5	43,500-43,525 mm	43,400-43,425 mm

• Max. radial runout - 0.030 mm
• Axis displacement - 0.090-0.210 mm

Timing belt

Tension set using the KM-510-A device

• New belt, cold - 4.5
• New belt, when heated - 7.5
• Belt, previously used, cold - 2.5
• Belt that has been in operation, in a heated state - 7.0

Valves and guides

	Inlet	Release
Valve stem diameter (all engines):
Standard	6.998-7.012 mm	6.978-6.992 mm
Increased by 0.075 mm	7.037-7.087 mm	7,053-7,067 mm
Increased by 0.150 mm	7.148-7.162 mm	7.128-7.142 mm
Increased by 0.250 mm	7.248-7.262 mm	7,228-7,242 mm
Guide hole diameter (all engines):
Standard	7.030-7.050 mm
Increased by 0.075 mm	7.105-7.125 mm
Increased by 0.150 mm	7,180-7,200 mm
Increased by 0.250 mm	7,280-7,300 mm

Max. clearance between valve stem and guide (all engines):

• Inlet - 0.018-0.052 mm
• Release - 0.038-0.072 mm

Valve seat cone angle (all engines) — 44°

Valve clearances - Automatic adjustment with hydraulic tappets

Flywheel

Max. permissible lateral runout of the starter drive ring gear - 0.500 mm

Allowance for re-finishing - max. permissible depth of material removal from the adhesion surface - 0.300 mm

Lubrication system

Minimum permissible oil pressure at idle speed at engine operating temperature (oil temperature not less than 80°C) — 1.5 bar

Oil pump type - Gear, crankshaft driven

Clearances in the oil pump:

• Gap between gear teeth (circumferential gap) for all engines - 0.100-0.200 mm
• Clearance between gears and housing (displacement along the axis):
• engines 1.4 and 1.6 l - 0.080-0.150 mm
• engines 1.8 and 2.0 l - 0.030-0.100 mm

Source is on this resource: www.OpelBook.ru

Torque wrench tightening torque, Nm

Camshaft Cover Bolts - 8

Crankshaft Pulley Bolts (1.4 and 1.6 l engines):

• Bolt M10 with thread length 23.0 mm - 55
• Bolt M10 with a thread length of 30.00 mm: - 55, then tighten to an angle of 45-60°
• Bolt M12 - 90, then turn it at an angle of 30-45°

Crankshaft Sprocket and Pulley Bolts (1.8 and 2.0 l engines) — 20



Timing Belt Cover Bolts - 4

Coolant pump bolts (engines 1.4 and 1.6 l/1.8 and 2.0 l) — 8/25

Camshaft Sprocket Bolt - 45

Crankshaft Sprocket Bolt (1.8 and 2.0 l engines) — 130, then turn it at an angle of 40-50°

Cylinder head bolts:

• For 1.4 and 1.6 l engines: — 25, then turn sequentially in 4 stages by 60°, 60°, 30° and 30° (the engine is warmed up)
• For 1.8 and 2.0 l engines: — 25, then turn sequentially in 4 stages by 60°, 60°, 60° and 30° (the engine is warmed up)

Fuel pump mounting bolts to camshaft cover (carburetor engine) — 18

Camshaft support plate bolts - 8

Engine crankcase drain plug - 45

Bolts for fastening the sensor tube to the oil pump - 8

Engine crankcase mounting bolts (engines 1.4 and 1.6 l/1.8 and 2.0 l) — 8/5

Oil pump mounting bolts - 6

Plug of the pressure reducing valve in the lubrication system - 30

Drive Disc/Flywheel Bolts:

• Engines 1.4 and 1.6 l: — 35. then turn to an angle of 30-45°
• 1.8 and 2.0 l engines: — 65, then turn to an angle of 30-45°

Transmission/gearbox to engine mounting bolts - 75

Transmission Bracket to Engine Mounting Bolts 60

Engine/transmission to body mounting bolts - 65

Generator bracket to engine mounting bolts: (M8/M10) — 25/40

Generator mounting bolts (M8/M10) to bracket — 25/40

Inlet and outlet pipe nuts - 22

Power Steering Pulley and Pump Bolts - 25/30

Thermostat housing bolts (engines 1.4 and 1.6 l/1.8 and 2.0 l) — 10/15

Starter bolts: (engines 1.4 and 1.6 l/1.8 and 2.0 l - 25/45 (engine side, 75 transmission side)

Spark plugs - 25

Main Bearing Housing Cover Bolts:

• 1.4 and 1.6 l engines: — 50, then turn to an angle of 45-60°
• 1.8 and 2.0 l engines: — 50, then turn to an angle of 40-50°

Big End Bearing Cap Bolts:

• 1.4 and 1.6 l engines, bolts with a thread length of 15/40 mm - 28/25, then turn by an angle of 30°
• 1.8 and 2.0 l engines: — 35, then turn to an angle of 45-60°