VOLVO B172K — 1.7L Engine
1.7L · 82 hp
Engine overview
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | B172K/KD |
| Capacity | 1721 cc |
| Idle speed | 900 ± 50 rpm |
| Inlet | 0.20 mm |
| Exhaust | 0.40 mm |
| Normal | 12 - 14 bar |
| Oil pressure | 3.5/3000 bar/rpm |
Engine (petrol)
| Fuel system (make and type) | Solex 28-34Z10 |
| Number of cylinders | 4 |
| Firing order | 1-3-4-2 |
| Timing stroboscopic (before TDC) | 6 ± 3/900 ± 50 °/rpm |
| Timing stroboscopic (before TDC) (unleaded fuel) | 6 ± 3/900 ± 50 °/rpm |
| Ignition coil resistance, primary | 0.4 - 0.8 ohms |
| Ignition coil resistance, secondary | 2500 - 5500 ohms |
| Spark plugs (make and type) | Bosch WR9DC |
| Spark plug gap | 0.75 mm |
| Fuel pump pressure | 0.16 - 0.28 bar |
| CO exhaust gas | 0.5 - 1.5 % |
| CO2 | 13 - 16 % |
| HC | 100 ppm |
| O2 | 0.5 - 2.0 % |
| Oil temperature during test | 70 °C |
| Fast-idle speed | 2400 - 2600 rpm |
| CO at fast-idle speed | < 0.3 % |
| Conditioning catalytic converter | 2 / 3000 min/rpm |
Cooling system
| Cap pressure | 0.75 bar |
| Thermostat opens at | 89 °C |
| Fan on at | 63 - 67 °C |
Electrical
| Battery | 55 Ah |
| Alternator | 50 A |
Capacities
| Engine sump, incl. filter | 5.0 l |
| Differential | 1.35 l |
| Cooling system | 6.5 l |
Torque settings
| Cylinder head bolts — Stage 1 | 30 Nm |
| Cylinder head bolts — Stage 2 | 70 Nm |
| Cylinder head bolts — Stage 4 | 180 |
| Cylinder head bolts — Stage 5 | 20 Nm |
| Cylinder head bolts — Stage 6 | 125 ° |
| Cylinder head bolts — Stage 1 | 52 Nm |
| Cylinder head bolts — Stage 2 | -90° ° |
| Rear hub | 245 Nm |
| Wheel nuts | 115 Nm |
| Spark plugs | 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.