ENGINE — 2UZ-FE ENGINE 34 3. Cylinder Head The cylinder head, which is made of aluminum, has adopted a pentroof-type combustion chamber. The spark plug has been located in the center of the combustion chamber in order to improve the engine’s antiknocking performance. The angle of the intake and exhaust valves is narrowed and set at 21.55 ° to permit a compact cylinder head. Uplight intake port have been adopted to improve the intake efficiency. A taper squish combustion chamber has been adopted to improve anti-knocking performance and intake efficiency. In addition, engine performance and fuel economy have been improved.
Plastic region tightening bolt is used for the cylinder head bolts for good axial tension. Valve Angle 21.55 ° Uplight Intake Port Intake Side 156EG35 Exhaust Side Taper Squish Area 156EG34