Y 16 XE DOHC I Engine
The Y 16 XE engine is a further advancement of the Opel ECOTEC engine generation and is based on the X 16 XEL engine, previously used in the Astra�G, Vectra�B and Zafira. The most significant new features in the Y 16 XE engine are the components which have been modified to satisfy the requirements of the D4 exhaust emissions standard.
The main differences between the Y 16 XE and the X 16 XEL engines are listed in the table below.
| X 16 XEL | Y 16 XE | |
|---|---|---|
| Engine management system | Multec�S (F) | Multec�S (F), see section 4.1.5 |
| Fuel system | Fuel feed and return lines with pressure regulator on the fuel distribution pipe | Fuel system without return - omission of the fuel return lines The pressure regulator is a component of the in�tank module. |
| Crankshaft | Without increment disc | Increment disc on crankshaft web 8 |
| Vibration damper | With increment disc | Without increment disc |
| Piston | Piston with valve pockets | Piston without valve pockets and reduced height of the top land |
| Intake manifold | Diecast manifold | Aluminium manifold with magnesium inner part |
| Exhaust manifold | Conventional | Exhaust manifold with welded catalytic converter |