Timing Components: Description and Operation

Camshaft Drive
An inverted tooth chain is used. A hydraulic tensioner and three guides control chain motion. The crankshaft and camshaft sprockets are powdered metal. The coolant pump sprocket, which acts as the timing chain idler sprocket, is steel.

Timing Chain Housing And Cover
The timing chain housing is die cast aluminum. The housing assembly includes the oil fill location. The timing chain cover is laminated stamped steel and retains the crankshaft front seal.

Camshaft Housings And Covers
The camshaft housings and covers are cast aluminum. The camshafts run directly on the housings and covers without bearing inserts.