Technical specifications (Opel Vectra B)

Water-cooled, four-cylinder engine with a single overhead camshaft driven by a chain.

Engine
Engine code:
- low pressure turbo	X20DTL
- high pressure turbo	X20DTH
Cylinder diameter	84 mm
Piston stroke	90 mm
Working volume	1994 cm³
Cylinder firing order	1–3–4–2 (cylinder N1 is located on the chain side)
Direction of rotation of the crankshaft	clockwise when viewed from the chain side
Compression ratio	18,5:1
Maximum power:
- low pressure turbo	60 kW at 4300 rpm
- high pressure turbo	74 kW at 4300 rpm
Maximum torque:
- low pressure turbo	185 Nm at 1800 – 2500 rpm
- high pressure turbo	205 Nm at 1600 – 2750 rpm
Compression pressure	17 – 24 bar
Maximum difference in compression pressure between any two cylinders	1.0 bar
Camshaft
Backlash	0.04 – 0.14 mm
Maximum permissible radial runout	0.06 mm
Valve cam lift	8.0 mm
Lubrication system
Minimum allowable oil pressure at idle speed running and engine temperature 80°C	1.5 bar

Tightening moments

Tensioner Pulley Support Plate Pivot Bolt	42 Nm
Tensioner strut mounting bolts	23 Nm
Camshaft Bearing Cap Fastening Bolts	20 Nm
Head cover mounting bolts	8 Nm
Camshaft Sprocket Mounting Bolt:
- stage 1	90 Nm
- stage 2	turn to an angle of 60°
- stage 3	turn to an angle of 30°
Connecting rod lower head bearing cap mounting bolts:
- stage 1	35 Nm
- stage 2	turn to an angle of 45°
- stage 3	turn by 15°
Crankshaft pulley mounting bolt:
- stage 1	150 Nm
- stage 2	turn to an angle of 45°
- stage 3	turn by 15°
Cylinder head mounting bolts:
- stage 1	25 Nm
- stage 2	turn to an angle of 65°
- stage 3	turn to an angle of 65°
- stage 4	turn to an angle of 65°
- stage 5	turn to an angle of 65°
- stage 6	turn by 15°
Gearbox to engine mounting bolts:
– M8 bolts	20 Nm
– M10 bolts	40 Nm
– M12 bolts	60 Nm
Front and right powertrain support mounting bolts to the engine	60 Nm
Front and right powertrain suspension mounting nuts to the lower frame	45 Nm
Bolts securing the rear support of the power unit to the bracket	45 Nm
Bolts securing the rear support of the power unit to the frame	20 Nm
Torque Compensation Rod Bolts	60 Nm
Gearbox to engine mounting bolts:
– M8 bolts	20 Nm
– M10 bolts	40 Nm
– M12 bolts	60 Nm
Flywheel mounting bolts:
- stage 1	45 Nm
- stage 2	turn to an angle of 30°
- stage 3	turn by 15°
Fuel pump sprocket mounting bolt	20 Nm
Bearing cap mounting bolts:
- stage 1	90 Nm
- stage 2	turn to an angle of 60°
- stage 3	turn by 15°
Oil pump pressure relief valve	60 Nm
Oil pump cover	8 Nm
Oil receiver pipe mounting bolts	8 Nm
Cylinder Block Nozzle Mounting Bolts	22 Nm
Oil pan to cylinder block mounting bolts	20 Nm
Oil pan to gearbox mounting bolts:
– M8 bolts	20 Nm
– M10 bolts	40 Nm
Oil drain plug	18 Nm
Left hinge tensioner pivot bolt	20 Nm
Loop tensioner head	60 Nm