Technical specifications (Opel Omega B)

Engine type	Four-cylinder in-line, liquid-cooled, twin-turbocharged camshafts located at the top of the engine
Engine code	X20XEV
Cylinder diameter	86.0 mm
Piston stroke	86.0 mm
Volume	1998 cm³
Cylinder firing sequence	1–3–4–2
Direction of rotation of the crankshaft	Clockwise
Compression ratio	10,8:1
Maximum power	100 kW at 5600 rpm
Maximum torque	185 Nm at 4000 rpm
Compression pressure:
Nominal	12 – 15 bar
Maximum pressure difference between two cylinders	1 bar
Camshaft
Cam height	9.2 mm
Lubrication system
Oil pump	Rotary type with crankshaft drive
Minimum allowable oil pressure at idle (oil temperature 80°C)	1.5 bar
Gaps:
Clearance between pump rotor teeth	0.08 – 0.15 mm
Free running of rotors	0.03 – 0.10 mm

Tightening torques, Nm

Camshaft Bearing Cap Bolts	8
Camshaft Cover Bolts	8
Camshaft Sprocket Bolt:
- step 1	50
- step 2	Tighten another 60°
- step 3	Tighten another 15°
Coolant pump bolts	25
Connecting rod cap bolt:
- step 1	35
- step 2	Tighten another 45°
- step 3	Tighten another 15°
Engine Crankcase Ventilation Tube Bolts	25
Crankshaft Balancer Bolts - Engines released since 1998:
- step 1	20
- step 2	Tighten another 45°
Crankshaft Pulley Bolts	20
Crankshaft Sensor Rotor Bolts	13
Crankshaft Sprocket Bolt:
- step 1	130
- step 2	Tighten another 40 – 50°
Cylinder head bolts:
- step 1	25
- step 2	Tighten another 90°
- step 3	Tighten another 90°
- step 4	Tighten another 90°
- step 5	Tighten another 15°
Drive Disc Bolts:
- step 1	55
- step 2	Tighten another 30°
- step 3	Tighten another 15°
Engine and gearbox mounts:
– left and right supports:
• support fastening nut to the body	55
• support fastening nut to its bracket	40
• bolts securing the bracket cylinder block supports	60
– rear support:
• bolts securing the support to the gearbox	40
• nuts securing the support to the crossbar	20
• bolts securing the crossbar to the body	45
Bolts securing the gearbox to the engine:
- bolts securing the gearbox to the cylinder block	60
– bolts securing the gearbox to the oil flange pallet (engines with a composite oil pan)	40
Engine and gearbox support bracket bolts (engines with a solid oil pan):
- bolt securing the bracket to the engine	40
- bolts securing the bracket to the gearbox	22
Flywheel bolts:
- step 1	65
- step 2	Tighten another 30°
- step 3	Tighten another 15°
Main bearing cap bolts:
- step 1	50
- step 2	Tighten another 45°
- step 3	Tighten another 15°
Oil pan casting bolts (engines with composite oil pan):
- step 1	20
- step 2	Tighten another 45°
Oil filter	15
Oil pump:
- mounting bolts	8
– pump cover screws	6
- pressure reducing valve bolt	50
Oil pickup pipe bolts:
– engines with a solid oil pan	8
– engines with a composite oil pan:
• bolts securing the oil pickup branch pipe to oil pump housing	8
• bolts securing the oil intake pipe to the cast part of the oil pan	M6:10; M8: 20
Oil pan bolts:
– oil pan, consisting of two parts:
• step 1	8
• step 2	Tighten another 30°
– bolts of the cast part of the oil pan:
• bolts securing the block to the cylinder block and oil pump	20
• bolts securing the block to the gearbox	40
Oil pan drain plug:
- Hexagon head plug	45
- plug with square head	10
Timing Belt Cover Bolts:
- outer cover	6
- back cover	8
Timing Belt Idle Pulley:
- pulley bolt	25
- bracket bolts	25
Timing Belt Tensioner Bolt	20

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Checking the article: Fedorova Varvara

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Opel Omega B: Petrol engine DOHC 2.0 l

Compression check
Top dead center (TDC) of piston No. 1
Camshaft cover
Crankshaft pulley
Timing Belt Covers
Gas distribution belt

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