General information about 2.0 liter engine repair (Opel Vectra B)

The engine has a displacement of 1994 cm³, 4 cylinders and 16 valves, with an overhead camshaft, mounted transversely with the gearbox on the left side of the engine. The crankshaft rests on 5 main bearings. The axial play of the crankshaft is adjusted by thrust half rings located on both sides of the bearing N3. The camshaft is driven by a chain from the crankshaft.

The engine is lubricated under pressure by an oil pump driven from the right end of the crankshaft. Oil is sucked through a mesh filter located in the oil receiver and then passes through an externally mounted filter into the cylinder block channels. The lower connecting rod head bearings are supplied with oil through an internal bore in the crankshaft. The camshaft cams and valves are lubricated with sprayed oil, as are all other moving parts of the engine.

Repair operations that can be performed on an engine installed in a vehicle

The following operations can be performed without removing the engine from the vehicle:

• check compression pressure;
• removing and installing the cylinder head cover;
• removing and installing the chain cover;
• removing and installing the chain;
• removing and installing the chain tensioner;
• removal and installation of the camshaft and tappets;
• removing and installing the cylinder head;
• removal and installation of pistons and connecting rods;
• removing and installing the oil pan;
• removing and installing the oil pump;
• removal and installation of oil radiator;
• replacement of crankshaft sealing rings;
• replacement of powertrain mounts;
• removing and installing the flywheel.

(Text copied from an internet website OpelBook.ru)