The 2.6-liter Opel Y26SE or LY9 engine was assembled in the UK from 2000 to 2003 and was installed on restyled versions of such popular models as the Vectra B and Omega B. This gasoline engine belongs to the very extensive General Motors 54° V6 engine family.
The Y line includes: Y26SE, Y32SE.
Specifications
| Production years | 2000-2003 |
| Displacement, cc | 2597 |
| Fuel system | distributed injection |
| Power output, hp | 170 – 180 |
| Torque output, Nm | 240 – 250 |
| Cylinder block | cast iron V6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 83.2 |
| Piston stroke, mm | 79.6 |
| Compression ratio | 10.0 |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 5.75 |
| Fuel type | petrol |
| Euro standards | EURO 3 |
| Fuel consumption, L/100 km (for Opel Omega 2002) — city — highway — combined |
14.9 8.1 10.6 |
| Engine lifespan, km | ~300 000 |
| Weight, kg | 198 |
The engine was installed on:
- Opel Omega B (V94) in 2000 – 2003;
- Opel Vectra B (J96) in 2000 – 2002.
Disadvantages of the Y26SE engine
- A known weak point of this unit is the constantly leaking heat exchanger.
- Also, a lot of trouble is caused by the unreliable crankcase ventilation system.
- After 250,000 km, the performance of the oil pump decreases, which is dangerous for the engine.
- It is important to monitor the cooling system; if it overheats, it immediately breaks through the cylinder head gaskets.
- The remaining problems are associated with failures of the ignition coils, lambda probes and crankshaft position sensor.
