X 18 XE1 DOHC I Petrol Engine
The X 18 XE1 petrol engine belongs to the DOHC I engine series and is a new development of the Opel ECOTEC engine generation, based on the X 16 XEL DOHC I petrol engine. The following table shows the main differences from the X 16 XEL.
|
|
X 16 XEL (Vectra-B) |
X 18 XE1 |
|
Toothed belt tension roller |
|
New version |
|
Intake valve head Ø |
31 mm |
27.5 mm |
|
Valve stem Ø |
6 mm |
5 mm |
|
Cylinder bore Ø |
79 mm |
80.5 mm |
|
Stroke |
81.5 mm |
88.2 mm |
|
Oil pan gasket |
Elastomer seal |
Liquid seal |
|
Oil filter |
Conventional oil filter cartridge |
Oil filter housing with replaceable paper cartridge as oil filter insert |
|
Oil pump |
Crescent blade pump |
Rotor pump |
|
Coolant pump |
|
New, improved performance coolant pump |
|
Crankcase ventilation |
External |
Internal |
|
Intake manifold |
|
Switched intake manifold length |
|
|
|
|
|
Engine management system |
Multec-S |
Simtec 70 |
|
Fuel system |
Fuel feed and return lines with pressure regulator on fuel distributor pipe |
Introduction of "non-return fuel system" - fuel return line in engine compartment no longer required. The pressure regulator is integrated into the in-tank module. |
