B18FT engine — Volvo 1.7 (1.7L)
1.7L · 120 hp
Engine overview
Factory specifications
Values from the manufacturer documentation for this engine.
Engine (general)
| Engine code | B18FT |
| Capacity | 1721 cc |
| Idle speed | 800 - 900 rpm |
| Inlet | 0.20 ± 0.05 mm |
| Exhaust | 0.40 ± 0.05 mm |
| Normal | 12 - 14 bar |
| Oil pressure | 2/1000 3.5/3000 bar/rpm |
| Engine code | B 18 FT |
Engine (petrol)
| Fuel system (make and type) | Bosch LH-Jetronic 2.2 |
| Number of cylinders | 4 |
| Firing order | 1-3-4-2 |
| Timing stroboscopic (before TDC) | 8 ± 3/800 °/rpm |
| Ignition coil resistance, primary | 0.5-1.5 ohms |
| Ignition coil resistance, secondary | 7000-10000 ohms |
| Spark plugs (make and type) | Bosch WR6DC |
| Spark plug gap | 0.7 mm |
| Fuel pump pressure | 0.35 bar |
| Injection pressure/system pressure | 3.0-3.2 bar |
| CO exhaust gas | < 0.5 % |
| CO2 | 14.5 - 16.0 % |
| HC | 100 ppm |
| O2 | 0.1 - 0.5 % |
| Lambda | 0.97 - 1.03 |
| Oil temperature during test | 70 °C |
| Fast-idle speed | 2400-2600 rpm |
| CO at fast-idle speed | < 0.3 % |
| Spark plugs (make and type) | Bosch WR7DC |
| Injection pressure/system pressure | 3.5 bar |
| CO exhaust gas | 0.7 ± 0.3 % |
| Fast-idle speed | 2400 - 2600 rpm |
| Lambda change (Delta Lambda) | 0.03 |
| Conditioning catalytic converter | 2 / 3000 min/rpm |
| Turbocharger (make and type) | Garrett T-2 |
Cooling system
| Cap pressure | 1.5 bar |
| Thermostat opens at | 89 °C |
| Stage 1/Fan 1 | 95 °C |
| Stage 2/Fan 2 | 101 °C |
| Thermostat opens at | 89 - 104 °C |
| Stage 1/Fan 1 | 92 - 95 °C |
Electrical
| Battery | 55 Ah |
| Alternator | 70 A |
Capacities
| Engine sump, incl. filter | (- 1992): 5.3 (1993): 5.0 (1994 -): 4.6 l |
| Gearbox refill | 3.4 l |
| Gearbox refill | 3.3 l |
| Cooling system | 6.75 l |
| Engine sump, incl. filter | 5.3 (->1992) 5.0 (1993) 4.6 (1994->) l |
| Automatic transmission | ZF 4 HP 14 Q |
| 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 | 360 ° |
| Cylinder head bolts — Stage 5 | 20 Nm |
| Cylinder head bolts — Stage 6 | 125 ° |
| Spark plugs | 30 Nm |
| Front hub | 230 Nm |
| Rear hub | 160 Nm |
| Wheel nuts | 110 Nm |
| Cylinder head bolts — Stage 6 | 123 ± 2 ° |
| Rear hub | 220 (->1990) Nm |
| Rear hub | 160 (1990->) Nm |
Workshop procedures for this engine
Step-by-step procedures from the workshop database.
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TorqFix was built by a mechanic — after a 2,700 km drive with five roadside repairs that no diagnostic tool could explain.
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The story behind TorqFix →Workshop data on this page last updated 22 Aug 2026.