Operation CHARM: Car repair manuals for everyone.

Cylinder Head






Cylinder head




The whole engine is manufactured of aluminum and is divided into five components, where the cylinder head consists of two components and the cylinder block of three components.

The seal between the cylinder head and cylinder block is a conventional cylinder head gasket, while the seals between other gasket faces are liquid gasket.

There is a cover over the spark plug wells to protect them from dirt and water.

The two camshafts are installed in six bearing caps integral to the two halves of the cylinder head.

The upper half functions as a combination valve cover and camshaft cover. It has cast oil ways on the underside which guarantee good oil supply to the camshafts and the hydraulic tappets.

The maintenance free hydraulic tappets, valve springs and valves are in the lower half.

The compact "pent-roof" construction combustion chamber together with the V configured valves provide optimal charging and direct (cross-flow) scavenging of the combustion chamber.

The combustion chamber squish surfaces and central spark plug give optimum charge combustion, low knock susceptibility and low stable exhaust emissions.