| Component | Torque (N·m) | Notes | |-----------|--------------|-------| | Camshaft bearing caps | 16 | Step pattern: inner → outer | | Cylinder head bolts | 29 + 90° + 90° | Use TTY (Torque-to-yield) sequence | | Camshaft timing gear bolt (intake VVT) | 54 | Use locking tool | | Camshaft sprocket bolt (exhaust) | 54 | – | | VVT-i oil control valve (OCV) | 21 | – | | Valve cover bolts | 8.5 | Cross pattern | | Spark plugs | 18 | 14 mm thread, anti-seize optional |
Official and community-supported workshop manuals provide critical data for maintaining this engine: 1szfe engine manual top
The 1SZ-FE is a 1.0L inline-4 engine primarily used in the Toyota Vitz and Yaris. Technical manuals for this engine detail the and valve train as key areas for top-end service . Cylinder Head Torque Specs | Component | Torque (N·m) | Notes |