Cylinder Head

WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.

The cast aluminum cylinder heads have 2 intake and 2 exhaust valves per cylinder. The cylinder head has line-bored camshaft journals. This design eliminates the use of bearing caps and retaining bolts and improves the ease of assembly. The single overhead camshaft is installed into the cylinder head from the rear or back-side of the head. The camshaft cap retains the camshaft and controls camshaft end-play. The valve rocker arm shafts are directly fastened onto the cylinder head with 1 dowel pin at each end of the shaft for positioning. The valve guides and valve seats are pressed into the head. The valve guides are replaceable, but must be reamed for proper guide-to-valve stem clearance after installation. The catalytic converters mount directly to the side of each cylinder head.