M40B18 BMW M40B18
Атмосферний 4-циліндровий двигун BMW, відомий своєю простотою та надійністю, але з обмеженими можливостями для тюнінгу.
86
Brand engines
1
Modifications
Technical Specifications
| Engine Displacement | 1.8 L (1,796 cc) |
| Configuration | Inline-4 |
| Number of Cylinders | 4 |
| Valves per Cylinder | 2 |
| Power | 113 - 115 л.с. |
| Torque | 162 - 165 Н*м |
| Cylinder Bore | 84.00 mm |
| Piston Stroke | 81.00 mm |
| Compression Ratio | 9.7:1 |
| Firing Order | 1-3-4-2 |
| Fuel System | Multi-point fuel injection |
| Aspiration | Naturally Aspirated |
| Intercooler | No |
| Maximum RPM | 6,000 rpm |
| Max Torque RPM | 4,250 rpm |
| Valve Train | SOHC |
| Timing Drive | Belt |
| Timing belt replacement interval | 60,000 km |
| Block Material | Cast Iron |
| Head Material | Aluminum |
| Engine Weight | 120 kg |
| Dimensions (L×W×H) | null mm |
| Lubrication System | Wet sump |
| Cooling System | Liquid cooling |
Additional Information
| Engine Family | BMW M40 engine series |
| Manufacturing Plant | Munich, Germany |
| Predecessor | M10B18 |
| Successor | M43B18 |
Maintenance
| Engine Oil Capacity | 4 L (with filter: 4.25 L) |
| Recommended Viscosity | 10W-40 |
| Oil Standard | API SL |
| Recommended Brands | Castrol GTX, Mobil Super, Shell Helix |
| Oil Change Interval | 10 000 km or 12 mo |
| Oil Filter | 11421730389 |
| Air Filter |
13721730946
Replace every 30 000 km |
| Fuel filter | 13321720101 |
| Spark Plugs |
Type: Copper Part number: 12121286087Gap: 0.8 mm Quantity: 4 pcs Replace every 20 000 km |
| Coolant Capacity | 8 L |
| Coolant Type | G11 (BMW Coolant) |
| Coolant Change Interval | 60 000 km |
| Thermostat Opening Temperature | 88°C |
| Operating Temperature | 90°C |
| Max Operating Temperature | 110°C |
| Critical Temperature | 120°C |
| Annual Maintenance Cost | 300-500 USD |
Reliability
Expected lifespan: 250 000 km
Common problems
| Problem | Severity | Mileage | Repair cost |
|---|---|---|---|
| Timing belt failure | High | 60000-80000 km | $500-700 |
| Oil leaks from valve cover gasket | Medium | 100000-150000 km | $100-200 |
Known defects
- Weak timing belt tensioner
- Valve cover gasket prone to leaks
Tuning potential
Tuning potential: Low | Max. safe power: 135 hp
| Stage | Power | Torque | Method | Cost |
|---|---|---|---|---|
| Stage 1 | 125 hp | 175 Nm |
ECU remap Reliability impact: Minimal |
$300 |
| Stage 2 | 135 hp | 185 Nm |
- Required: Exhaust system, Air intake Reliability impact: Low |
$1000 |
Popular modifications
- Exhaust upgrade
- Air intake modification
Tuning limitations
- Limited by engine design
- Older engine technology
Cars with the M40B18 engine
This engine was fitted to 1 model
| Photo | Brand | Model | Generation | Production years |
|---|---|---|---|---|
|
BMW | 5 Series | 5 series (E34) | 1988 - 1995 |
All modifications (1)
| Vehicle | Generation | Modification | Power | Gearbox | Drive |
|---|---|---|---|---|---|
| BMW 5 Series | 5 series (E34) | BMW 518i 1.8 113 л.с. 5-МКП 2WD | 113 hp | 5-МКП | 2WD |
Interesting Facts
- The M40B18 was one of the first BMW engines to use a timing belt instead of a chain.
- It was designed to be a more economical and lower-emission engine compared to its predecessors.
Applications
Total produced: null
| Vehicle | Generation | Years | Power | Markets |
|---|---|---|---|---|
| BMW 3 Series | E30 | 1987-1994 | 113hp | Europe, USA |
| BMW 5 Series | E34 | 1988-1990 | 113hp | Europe |
Compatible transmissions: 5-speed Manual, 4-speed Automatic
Drive types: RWD
Fuel Economy
| Fuel Type | Petrol 95 |
| Octane Rating | Minimum: 91 | Recommended: 95 |
| Consumption (City) | 10.5 L/100km |
| Consumption (Highway) | 6.5 L/100km |
| Consumption (Combined) | 8 L/100km |
| Real Consumption | 9 L/100km |
| Fuel Tank Capacity | 55 L |
| Range | 688 km |
| Cost per 100 km | 10-12 USD |
Emissions Standards
| Emission Standard | Euro 1 |
| CO₂ Emissions | 190 g/km |
| Particulate Filter (DPF) | Absent |
| AdBlue | Not Required |