Produced between 2009 and 2010, the 2.5-liter Ford JZDA or 2.5 Duratec RS and RS500 engine was fitted to charged versions of the second-generation Focus under the RS and RS500 indices. This is a significantly improved Volvo B5254T4 engine.
DURATEC ST/RS family:
2.0 L – ALDA, HMDA;
2.5 L – HUBA, HYDA, HYDB, HUWA, JZDA.
The engine was installed on:
- Ford Focus RS Mk2 in 2009 – 2010;
- Ford Focus RS500 Mk2 in 2010.
Specifications
| Production years | 2009-2010 |
| Displacement, cc | 2522 |
| Fuel system | distributed injection |
| Power output, hp | 305 – 350 |
| Torque output, Nm | 440 – 460 |
| Cylinder block | aluminum R5 |
| Block head | aluminum 20v |
| Cylinder bore, mm | 83 |
| Piston stroke, mm | 93.2 |
| Compression ratio | 8.5 |
| Features | intercooler |
| Hydraulic lifters | no |
| Timing drive | belt |
| Phase regulator | CVVT |
| Turbocharging | yes |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.9 |
| Fuel type | petrol |
| Euro standards | EURO 4/5 |
| Fuel consumption, L/100 km (for Ford Focus 2 RS 2010) — city — highway — combined |
14.0 6.9 9.4 |
| Engine lifespan, km | ~300 000 |
Disadvantages of the JZDA engine
The Internet does not have a lot of information about these uncommon motors’ malfunctions;
Engines in this series typically have crankcase ventilation contamination; oil will spill onto the belt if the PCV valve diaphragm is not changed in a timely manner; they dislike these units; poor fuel, candles, and coils wear out quickly;
Many owners express dissatisfaction over having to replace the turbine twice in 100,000 kilometers.