From 2000 to 2003, the UK assembled the 2.6-liter Opel Y26SE or LY9 engine, which was fitted to redesigned versions of well-known models like the Vectra B and Omega B. The vast General Motors 54° V6 engine family includes this gasoline engine.
Y26SE and Y32SE are included in the Y line.
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
This unit’s continuously leaking heat exchanger is one of its known weak points.
The unreliable crankcase ventilation system also causes a lot of problems.
The oil pump’s performance deteriorates after 250,000 kilometers, endangering the engine.
It is crucial to keep an eye on the cooling system because if it overheats, the cylinder head gaskets will burst right away.
The remaining issues are related to crankshaft position sensor, lambda probe, and ignition coil failures.