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Cylinder Heads

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

The Aurora cylinder heads are semi permanent mold cast aluminum with powdered metal valve seat inserts and valve guides. Two 34.2 mm (1.347 in) intake valves and two 28 mm (1.102 in) exhaust valves are actuated by roller finger followers pivoting on a stationary hydraulic lash adjuster (SHLA). Separate intake and exhaust camshafts are supported by five bearings machined into the cylinder head with camshaft thrust taken by the first bearing (the left hand intake cam has an additional bearing to accommodate the water pump drive). The combustion chamber is roughly in the shape of a clover leaf with a nominal volume of 48.6 cc and a centrally located spark plug.

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