KADETT D has either an ONS or OHV engine (with overhead valves). In the OHV engine, the block and cylinder head are made of cast iron. The engine has a camshaft that actuates the valves from the tappets by means of rocker arms. It is driven by the crankshaft through a roller chain.
All engines with a cylinder displacement of 1.3 liters and above (both versions have 1.2-l engines) ONS type. The camshaft is located in the cylinder head, made of light metal. The camshaft is driven by the crankshaft via a toothed belt, and in turn via levers actuates the plumb intake and exhaust valves. Hydraulic valve clearance compensators automatically select clearance. The engine is lubricated by an oil pump, which is mounted in front of the cylinder block and is driven by the crankshaft. From the pump, oil is supplied through holes and channels to the crankshaft and camshaft bearings, as well as to the cylinder mirror.
The coolant pump is located in front of the cylinder block and is driven by a toothed belt.
To prepare the combustible mixture, there is a carburetor or fuel injection system, which usually works without requiring maintenance. The ignition spark is generated by the electronic ignition system (except for 1.0-litre and partially 1.2-litre OHV engines), which operates with virtually no maintenance. Setting the ignition timing is only necessary in the contact ignition system of all one-liter engines, and also 1.2-liter OHV engines.
Also produced OPEL KADETT D with a diesel engine. A separate chapter is devoted to the diesel engine, in addition, special instructions for diesel engines are given in other chapters.
The engine number is stamped on the front wall of the engine block (top arrow)
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