Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSSCION2006XB L4-1.5L (1NZ-FE)REPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYSYSTEM SPECIFICATIONS
2006 Scion xB L4-1.5L (1NZ-FE)
System Specifications
2006 Scion xB L4-1.5L (1NZ-FE)SECTION System Specifications
Cylinder Head
Maximum Warpage
Cylinder block side 0.05 mm (0.0020 inch)
Intake manifold side 0.10 mm (0.0039 inch)
Exhaust manifold side 0.10 mm (0.0039 inch)
Cylinder Head Bolts
Standard length 142.8 to 144.2 mm (5.622 to 5.677 inch)
Maximum length 147.1 mm (5.791 inch)
If the length is greater than the maximum, replace the bolt.
First pass 29 Nm (300 kgf-cm, 22 ft. lbs.)
Second pass Tighten 90°
Final pass Tighten 90°
Intake manifold bolts & nuts 30 Nm (306 kgf-cm, 22 ft. lbs.) in several steps
Camshaft Gear & Sprocket
First pass 13 Nm (129 kgf-cm, 9 ft. lbs.)
Final pass: No. 1 bearing cap 23 Nm (235 kgf-cm, 17 ft. lbs.)
Camshaft gear & sprocket bolt 64 Nm (653 kgf-cm, 47 ft. lbs.)
Exhaust manifold bolts & nuts 27 Nm (275 kgf-cm, 20 ft. lbs.)
Maximum Warpage
Cylinder block side 0.05 mm (0.0020 inch)
Intake manifold side 0.10 mm (0.0039 inch)
Exhaust manifold side 0.10 mm (0.0039 inch)
Cylinder Head Bolts
Standard length 142.8 to 144.2 mm (5.622 to 5.677 inch)
Maximum length 147.1 mm (5.791 inch)
If the length is greater than the maximum, replace the bolt.
First pass 29 Nm (300 kgf-cm, 22 ft. lbs.)
Second pass Tighten 90°
Final pass Tighten 90°
Intake manifold bolts & nuts 30 Nm (306 kgf-cm, 22 ft. lbs.) in several steps
Camshaft Gear & Sprocket
First pass 13 Nm (129 kgf-cm, 9 ft. lbs.)
Final pass: No. 1 bearing cap 23 Nm (235 kgf-cm, 17 ft. lbs.)
Camshaft gear & sprocket bolt 64 Nm (653 kgf-cm, 47 ft. lbs.)
Exhaust manifold bolts & nuts 27 Nm (275 kgf-cm, 20 ft. lbs.)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.