: Procedures for partial engine assembly, cylinder head installation , and timing chain service.

The 3SZVE uses an aluminum cylinder head and a cast iron block. The torque sequences for the head bolts are critical. A generic manual might list 60 ft-lbs, but the specifies a multi-stage torque-to-yield (TTY) procedure. Over-tighten by 5 ft-lbs, and you warp the head.