Engine Component Description: Camshafts

Each cylinder head has twin overhead camshafts. A toothed belt drives the 4 camshafts with a self-adjusting belt tensioner. The belt assembly also includes 2 eccentric pulleys for timing adjustment. The camshaft sprockets on the left cylinder head are interchangeable, as are the sprockets on the right cylinder head. The camshafts are direct acting on the valves via hydraulic lifters. The hydraulic lifters adjust automatically to the change in length of the valves at different temperatures. The hydraulic lifters are supplied oil through oil galleries in the cylinder head.