Opel/Vauxhall Astra 2.0 16V (C20XE) Torque Specifications
Back to Astra Mk2 ModelsEngine code: C20XE
Power: 110 kW (150hp) @ 6000 rpm
Production years: 1988-1991
Notes: R-Cat
Cylinder Head
Renew bolts: Yes
Tighten bolts in the following stages:
- 25 Nm
- 60°
- 60°
- 60°
- Run engine 15 minutes
- 60°
Engine Torque Specs
| Component | Torque |
|---|---|
| Main bearings | Renew bolts/nuts: Yes Stage 1: 50 Nm Stage 2: 40°-60° |
| Big end bearings | Renew bolts/nuts: Yes Stage 1: 35 Nm Stage 2: 45°-60° |
| Oil pump to cylinder block | 6 Nm |
| Sump bolts | 15 Nm |
| Sump drain bolt | 15 Nm |
| Flywheel/driveplate | Tighten in the following stages: 65 Nm 30°-45° |
| Clutch pressure plate | 15 Nm |
| Crankshaft pulley/damper centre bolt | Use new bolt and grease thread. Tighten to 250 Nm + 40°-50°. |
| Camshaft sprocket/gear | 50 Nm + 60°-75° |
| Camshaft carrier/cap | M8 bolts = 20 Nm M6 bolts = 10 Nm |
| Camshaft/rocker cover | 8 Nm |
| Inlet manifold to cylinder head | 22 Nm |
| Exhaust manifold to cylinder head | 22 Nm |
| Spark plugs | 25 Nm |
| Lambda sensor (Oxygen) | 38 Nm |
Chassis Tightening Torques
| Component | Torque |
|---|---|
| Front hub | Tighten nut in three stages: 100 Nm Slacken off 20 Nm + 90° |
| Steering track rod end | 60 Nm. Use new nuts/bolts. |
| Brake disc to hub | Front: 4 Nm |
| Brake caliper/carrier to hub | Front: 95 Nm Rear: 65 Nm |
| ABS sensor | Front: 8 Nm Rear: 15 Nm |
| Road wheels | 90 Nm |
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