Technical specifications (Opel Omega B)

Engine type	Four-cylinder in-line, liquid-cooled, single-turbocharged camshaft located at the top of the engine
Engine code:
- models equipped with a catalytic converter	X20SE
- models not equipped with a catalytic converter	20SE
Cylinder diameter	86 mm
Piston stroke	86 mm
Volume	1998 cm³
Cylinder firing sequence	1–3–4–2
Direction of rotation of the crankshaft	Clockwise
Compression ratio	10:1
Maximum power	85 kW at 5400 rpm
Maximum torque	178 Nm at 2800 rpm
Compression pressure:
- nominal	12 – 15 bar
– the maximum difference in pressure between two cylinders	1 bar
Camshaft
Free play	0.09 – 0.21 mm
Maximum permissible radial runout	0.04 mm
Lubrication system
Oil pump	Rotary type with crankshaft drive
Minimum allowable oil pressure at idle (temperature oils 80°C)	1.5 bar
Gaps:
– gap between the teeth of the pump rotors	0.08 – 0.15 mm
- free running of rotors	0.03 – 0.10 mm

Tightening torques, Nm

Camshaft Cover Bolts	8
Camshaft Sprocket Bolt	45
Camshaft Thrust Plate Bolts	8
Camshaft Housing Rear Cover Bolts	8
Connecting rod cap bolt:
- step 1	35
- step 2	Tighten another 45°
- step 3	Tighten another 15°
Coolant pump bolts	25
Engine Crankcase Ventilation Tube Bolts	25
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°
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
Engine and gearbox support bracket bolts:
- bolt securing the bracket to the engine	40
– bolts securing the bracket to the gearbox	22
- bolts securing the gearbox to the engine	60
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 filter	15
Oil pump:
- mounting bolts	8
- pump cover screws	6
- pressure reducing valve bolt	50
- oil intake pipe bolts	8
Spark plug heat shields	25
Oil pan bolts:
- mounting bolts	8
- oil pan drain plug	55
Timing Belt Cover Bolts:
- outer cover	4
- back cover	6
Timing Belt Tensioner Bolt	20

Original posted on the website www.OPELBOOK.ru

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Checking the article: Fedorova Varvara

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Opel Omega B: Petrol engine SOHC 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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