JTDm-2 1956 Alfa Romeo JTDm-2 1956
Модульний 4-циліндровий двигун з турбонаддувом, що забезпечує високу ефективність та потужність.
48
Brand engines
4
Modifications
Technical Specifications
| Engine Displacement | 2.0 L (1,956 cc) |
| Configuration | Inline-4 |
| Number of Cylinders | 4 |
| Valves per Cylinder | 4 |
| Power | 120 - 170 л.с. |
| Torque | 320 - 380 Н*м |
| Cylinder Bore | 83.00 mm |
| Piston Stroke | 90.40 mm |
| Compression Ratio | 16.5:1 |
| Firing Order | 1-3-4-2 |
| Fuel System | Common Rail Direct Injection |
| Aspiration | Turbocharged |
| Turbocharger | Variable Geometry Turbocharger |
| Intercooler | Yes |
| Maximum RPM | 4,000 rpm |
| Max Torque RPM | 1,750 rpm |
| Valve Train | DOHC |
| Timing Drive | Belt |
| Timing belt replacement interval | 120,000 km |
| Block Material | Cast Iron |
| Head Material | Aluminum |
| Lubrication System | Pressure lubrication |
| Cooling System | Liquid cooling |
Additional Information
| Engine Family | JTDm |
| Manufacturing Plant | Pratola Serra, Italy |
| Predecessor | JTDm 1910 |
Maintenance
| Engine Oil Capacity | 4.5 L (with filter: 4.8 L) |
| Recommended Viscosity | 5W-30 |
| Oil Standard | ACEA C2 |
| Recommended Brands | Selenia WR, Castrol Edge, Mobil 1 |
| Oil Change Interval | 20 000 km or 12 mo |
| Oil Filter | 71754299 |
| Air Filter |
71754298
Replace every 60 000 km |
| Fuel filter | 77363651 |
| Cabin Filter | 71754558 |
| Spark Plugs | |
| Coolant Capacity | 7 L |
| Coolant Type | G12++ (Paraflu UP) |
| Coolant Change Interval | 240 000 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: 250 000 km
Common problems
| Problem | Severity | Mileage | Repair cost |
|---|---|---|---|
| EGR valve clogging | Medium | 80000-120000 km | $300-500 |
| DPF clogging | High | 100000-150000 km | $1000-1500 |
Known defects
- Turbocharger actuator issues
- Oil cooler leaks
Warranty extensions
- Extended warranty for DPF issues in some markets
Tuning potential
Tuning potential: Medium | Max. safe power: 250 hp
| Stage | Power | Torque | Method | Cost |
|---|---|---|---|---|
| Stage 1 | 190 hp | 420 Nm |
ECU remap only Reliability impact: Minimal |
$400 |
| Stage 2 | 210 hp | 450 Nm |
ECU, Downpipe, Intake Required: Upgraded intercooler, ECU remap Reliability impact: Low |
$1500 |
| Stage 3 | 230 hp | 480 Nm |
- Required: Bigger turbo, Upgraded fuel system Reliability impact: Medium |
$5000 |
Popular modifications
- ECU remap
- Upgraded intercooler
- Performance air filter
Tuning limitations
- Stock clutch may not handle torque above 450Nm
- DPF removal required for higher power levels
Cars with the JTDm-2 1956 engine
This engine was fitted to 2 models
All modifications (4)
| Vehicle | Generation | Modification | Power | Gearbox | Drive |
|---|---|---|---|---|---|
| Alfa Romeo Giulietta | Giulietta | 2.0 JTDm 170 л.с. 6-МКП 2WD | 170 hp | 6-МКП | 2WD |
| Alfa Romeo Giulietta | Giulietta | 2.0 JTDm 170 л.с. 7 DCT 2WD | 170 hp | 7 DCT | 2WD |
| Alfa Romeo MiTo | MiTo | 2.0 JTDm 170 л.с. 6-МКП 2WD | 170 hp | 6-МКП | 2WD |
| Alfa Romeo MiTo | MiTo | 2.0 JTDm 170 л.с. 7 DCT 2WD | 170 hp | 7 DCT | 2WD |
Interesting Facts
- The JTDm-2 engine features a variable geometry turbocharger for improved efficiency.
- It was one of the first diesel engines to comply with Euro 5 standards.
Applications
| Vehicle | Generation | Years | Power | Markets |
|---|---|---|---|---|
| Alfa Romeo Giulietta | 940 | 2010-2020 | 120hp/150hp/170hp | Europe, Asia |
| Alfa Romeo Giulia | 952 | 2016-present | 150hp/180hp | Europe, USA |
Compatible transmissions: 6-speed Manual, 6-speed Automatic
Drive types: FWD, RWD
Fuel Economy
| Fuel Type | Diesel |
| Consumption (City) | 6.5 L/100km |
| Consumption (Highway) | 4.5 L/100km |
| Consumption (Combined) | 5.3 L/100km |
| Real Consumption | 6 L/100km |
| Fuel Tank Capacity | 60 L |
| Range | 1,132 km |
| Cost per 100 km | 8-10 USD |
Emissions Standards
| Emission Standard | Euro 5 |
| CO₂ Emissions | 139 g/km |
| Particulate Filter (DPF) |
Present Regeneration every 500 km |
| AdBlue | Not Required |
Awards and Recognition
- Engine of the Year (2010) — 1.8L to 2.0L
Comparison with competitors
| Engine | Brand | Displacement | Power | Torque |
|---|---|---|---|---|
| TDI CR 2.0 | Volkswagen | 1,968 cc | 150 hp | 340 Nm |
| CDTi 2.0 | Opel | 1,956 cc | 160 hp | 350 Nm |
Pros
- Good fuel efficiency
- Strong torque delivery
- Complies with Euro 5 standards
Cons
- DPF issues can be costly
- EGR valve prone to clogging