The PT Cruiser has a unique intake designed to fit within the confines of its teeny engine compartment. Valves Dual overhead camshafts actuate four valves per cylinder. All valves have 0.24 in. Valves have a 48-degree included angle. Each valve is operated by an end-pivot rocker arm that has a 20 mm roller cam follower to reduce low speed friction and cam wear.
Rockers pivot on inboard-mounted, fixed hydraulic lash adjusters.
Barrel-shaped single valve springs provide control of valve actuation to 7200 rpm. Camshafts of post-hardened nodular cast iron provide a 236 degree intake duration and a 240 degree exhaust duration. The intake cam centerline is 113 degrees ATDC, the exhaust is 110 degrees BTDC, with 15 degrees of overlap. Camshaft drive is similar to the 2.0-liter SOHC engine but the intake and exhaust cams have separate drive sprockets. A three-piece molded plastic cover, with inspection plate, completely encloses the belt to prevent damage from foreign matter.