AR67102 engine — Alfa Romeo 1.8 (1.8L)
1.8L · 126 hp
Engine overview
Vehicles with this engine
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | AR 67102 |
| Capacity | 1773 cc |
| Idle speed | 750 ± 50 rpm |
| Inlet | 0.38 - 0.45 mm |
| Exhaust | 0.43 - 0.50 mm |
| Oil pressure | 5/4000 bar/rpm |
Engine (petrol)
| Fuel system (make and type) | Bosch M 1.7 Motronic |
| Number of cylinders | 4 |
| Firing order | 1-3-4-2 |
| Ignition coil resistance, primary | 0.5 ohms |
| Ignition coil resistance, secondary | 13300 ohms |
| Spark plugs (make and type) | Champion C6YCC Golden lodge 25HLD |
| Injection pressure/system pressure | 2.8 - 3.2 bar |
| CO exhaust gas | < 0.2 % |
| HC | < 50 ppm |
| Oil temperature during test | 60 °C |
| Fast-idle speed | 2500 - 2900 rpm |
| CO at fast-idle speed | 0.3 % |
| Closed-loop test at: | 700 - 1000 rpm |
| Lambda | 0.97 - 1.03 |
| Lambda change (Delta Lambda) | 0.03 |
| Malfunction rate engagement (Germany only) | BKV 1 |
Cooling system
| Cap pressure | 0.98 ± 0.1 bar |
| Thermostat opens at | 87 ± 2 °C |
| Stage 1/Fan 1 | 92 ± 2 °C |
| Stage 2/Fan 2 | 97 ± 2 °C |
Electrical
| Battery | 60 Ah |
| Alternator | 80 A |
Capacities
| Engine sump, incl. filter | 5.0 l |
| Gearbox refill | 2.0 l |
| Cooling system | 8.3 l |
| Air-conditioner refrigerant | 700 g |
| Air-conditioner compressor oil | 225 - 255 ml |
Torque settings
| Cylinder head bolts — Stage 1 | 35 - 55 Nm |
| Cylinder head bolts — Stage 2 | 76 - 84 Nm |
| Cylinder head bolts — Stage 5 | 83 - 91 Nm |
| Front hub | 266 - 294 Nm |
| Rear hub | 304 - 336 Nm |
| Wheel nuts | 73 - 90 Nm |
| Spark plugs | M14 25 - 30 Nm |
Workshop procedures for this engine
Step-by-step procedures from the workshop database.
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Get free diagnosis →Who makes these pages, and how
TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
The figures on this page come from manufacturer workshop documentation and are shown as they are. The page is assembled automatically from that data — it is not written by an AI. The AI works in the chat, where it answers for your specific car. It writes nothing here.
Variants of the same model differ. Cross-check torque against the factory manual for your engine before final tightening.
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The story behind TorqFix →Workshop data on this page last updated 22 Aug 2026.