1.2 Astra Specs
ASTRA H 1.2 MK5 TORQUE SETTINGS, SERVICE DATA & TIMING CHAIN GUIDE
Oils & Fluids Capacities
Engine Oil / 10w-30 Semi Synthetic
Oil Capacity / 3.5 Litres
Gearbox Oil Grade / Opel No 93 165 290
Gearbox Capacity / 1.6 Litres
Antifreeze Mix Capacity / 5.6 Litres
Brake Fluid / DOT 4+
Service Checks & Engine Data
Valve Clearance / Hydraulic
Compression Pressure / 200psi - 230psi
Oil Pressure / 1.5bar @ 860rpm
Thermostat Opens / 92°C
Engine Torque Settings
Cylinder Head /
1 - 25nm
2 - 60°
3 - 60°
4 - 60°
Main Bearings /
m8 Bolts 25nm + 60° + 15°
m6 Bolts 10nm + 60° + 15°
Big End Bearings /
1 - 13nm
2 - 60° + 15°
Oil Pump / 8nm
Sump Bolts /
To cylinder block - 10nm
To transmission - 40nm
Sump Plug Bolt / 10nm
Flywheel /
1 - 35nm
2 - 30°
3 - 15°
Clutch Pressure Plate /
m6 bolts - 12nm
m7 bolts - 15nm
m8 bolts - 28nm
Crankshaft Pulley Bolt / 150nm + 45° + 15°
Crankshaft Pulley Damper Bolts / 8nm
Camshaft Sprocket Gear /
1 - 50nm
2 - 60°
Camshaft Caps / 8nm
Rocker Cover Bolts / 8nm
Inlet Manifold / 10nm
Exhaust Manifold /
1 - 10nm
2 - 20nm
Water Pump / 8nm
Spark Plugs / 25nm
Fuel Rail / 8nm
Crankshaft Position Sensor / 8nm
Camshaft Position Sensor / 6nm
Coolant Temp Sensor / 18nm
Lambda Sensor / 40nm
Knock Sensor / 20nm
Engine Oil Pressure Switch / 20nm
Oil Filter / 25nm
Chassis Torque Settings
Front Hub / Use new nut
1 - 150nm
2 - Slacken off 45°
3 - 250nm
Wheel Bearing Housing Bolts (Front) / 90nm + 30° + 15°
Wheel Bearing Housing Bolts (Rear) / 50nm + 30° + 15°
Steering Wheel / 30nm
Steering Rack / 45nm + 45° + 15°
Track Rod End /
1 - 30nm
2 - 90°
3 - 15nm
Brake Disc To Hub (Front) / 7nm
Brake Disc To Hub (Rear) / 4nm
Brake Caliper To Carrier (Front) / 28nm
Brake Calpier To Carrier (Rear) / 25nm
Brake Carrier To Hub (Front) / 100nm
Brake Carrier To Hub (Rear) / 100nm
Wheels / 110nm
Timing Chain Setup (Astra 1.2)
Chain Installation /
1 - Turn crankshaft to just before TDC on cylinder number 1
2 - Remove blanking plug from block
3 - Turn crankshaft slowly until pin in block can be inserted into crank
4 - Make sure camshaft lobes on number 1 cylinder angled upwards
5 - Insert camshaft locking bar in rear of camshafts
6 - Insert camshaft sprocket timing tool
7 - Remove blanking plug from chain front cover
8 - Compress tensioner and lock with tensioner locking pin
9 - If needed slacken bolt on each camshaft to adjust valve timing position
10 - Tighten bolt of each camshaft sprocket
11 - Tighten crankshaft centre bolt 150nm + 45° + 15°
12 - Tighten crankshaft pulley bolts 8nm
13 - Refit both blanking plugs 50nm
