M50B25 BMW M50B25
Рядний 6-циліндровий атмосферний двигун BMW з електронним впорском пального, відомий своєю надійністю та плавністю роботи.
86
Brand engines
3
Modifications
Technical Specifications
| Engine Displacement | 2.5 L (2,494 cc) |
| Configuration | Inline-6 |
| Number of Cylinders | 6 |
| Valves per Cylinder | 4 |
| Power | 192 л.с. |
| Torque | 245 Н*м |
| Cylinder Bore | 84.00 mm |
| Piston Stroke | 75.00 mm |
| Compression Ratio | 10.0:1 |
| Firing Order | 1-5-3-6-2-4 |
| Fuel System | Multi-point fuel injection |
| Aspiration | Naturally Aspirated |
| Intercooler | No |
| Maximum RPM | 6,500 rpm |
| Max Torque RPM | 4,200 rpm |
| Valve Train | DOHC |
| Timing Drive | Belt |
| Timing Chain Replacement | 250000 or as needed |
| Block Material | Cast Iron |
| Head Material | Aluminum |
| Engine Weight | 180 kg |
| Dimensions (L×W×H) | null mm |
| Lubrication System | Wet sump |
| Cooling System | Liquid cooling |
Additional Information
| Engine Family | BMW M50 engine series |
| Manufacturing Plant | Steyr, Austria |
| Predecessor | M20B25 |
| Successor | M52B25 |
Maintenance
| Engine Oil Capacity | 6.5 L (with filter: 6.75 L) |
| Recommended Viscosity | 10W-40 |
| Oil Standard | ACEA A3/B3 |
| Recommended Brands | Castrol GTX, Mobil Super 2000, Shell Helix HX7 |
| Oil Change Interval | 10 000 km or 12 mo |
| Oil Filter | 11421730389 |
| Air Filter |
13721730946
Replace every 40 000 km |
| Fuel filter | 13321740985 |
| Cabin Filter | null |
| Spark Plugs |
Type: Copper Part number: 12121730393Gap: 0.8 mm Quantity: 6 pcs Replace every 30 000 km |
| Coolant Capacity | 11 L |
| Coolant Type | G11 (BMW Coolant) |
| Coolant Change Interval | 100 000 km |
| Thermostat Opening Temperature | 88°C |
| Operating Temperature | 90°C |
| Max Operating Temperature | 110°C |
| Critical Temperature | 120°C |
| Annual Maintenance Cost | 500-800 USD |
Reliability
Expected lifespan: 400 000 km
Common problems
| Problem | Severity | Mileage | Repair cost |
|---|---|---|---|
| Valve cover gasket oil leaks | Medium | 150000-200000 km | $200-400 |
| Water pump failure | High | 100000-150000 km | $300-500 |
Known defects
- Plastic water pump impeller failure
- Oil leaks from various seals
Tuning potential
Tuning potential: Medium | Max. safe power: 270 hp
| Stage | Power | Torque | Method | Cost |
|---|---|---|---|---|
| Stage 1 | 210 hp | 260 Nm |
ECU remap Reliability impact: Minimal |
$400 |
| Stage 2 | 230 hp | 280 Nm |
ECU, Exhaust System Required: Performance exhaust, Cold air intake Reliability impact: Low |
$1500 |
| Stage 3 | 250 hp | 300 Nm |
- Required: Camshaft upgrade, High-flow injectors Reliability impact: Medium |
$3000 |
Popular modifications
- Cold air intake
- Performance exhaust
- ECU remap
Tuning limitations
- Stock internals limit high power gains
- Cooling system upgrades recommended for track use
Cars with the M50B25 engine
This engine was fitted to 2 models
| Photo | Brand | Model | Generation | Production years |
|---|---|---|---|---|
|
BMW | 5 Series | 5 series (E34) | 1988 - 1995 |
|
No photo
|
BMW | Z1 | Z1 (E30) | 1988 - 1991 |
All modifications (3)
| Vehicle | Generation | Modification | Power | Gearbox | Drive |
|---|---|---|---|---|---|
| BMW 5 Series | 5 series (E34) | BMW 525i 2.5 192 л.с. 5-МКП 2WD | 192 hp | 5-МКП | 2WD |
| BMW Z1 | Z1 (E30) | M20B25 2.5 170 л.с. 5-МКП 2WD | 170 hp | 5-МКП | 2WD |
| BMW Z1 | Z1 (E30) | M50B25 2.5 192 л.с. 6-МКП 2WD | 192 hp | 6-МКП | 2WD |
Interesting Facts
- First BMW engine to feature VANOS (variable valve timing)
- Known for its smooth and linear power delivery
Applications
Total produced: null
| Vehicle | Generation | Years | Power | Markets |
|---|---|---|---|---|
| BMW 3 Series | E36 | 1990-1995 | 192hp | Europe, USA |
| BMW 5 Series | E34 | 1990-1995 | 192hp | Europe, USA |
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) | 12 L/100km |
| Consumption (Highway) | 7.5 L/100km |
| Consumption (Combined) | 9.5 L/100km |
| Real Consumption | 10.5 L/100km |
| Fuel Tank Capacity | 70 L |
| Range | 737 km |
| Cost per 100 km | 15-20 USD |
Emissions Standards
| Emission Standard | Euro 1 |
| CO₂ Emissions | 220 g/km |
| Particulate Filter (DPF) | Absent |
| AdBlue | Not Required |