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 MANUALSFORD2007FOCUS L4-2.3L VIN ZREPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER HEAD ASSEMBLYSYSTEM SPECIFICATIONSGENERAL SPECIFICATIONS
2007 Ford Focus L4-2.3L VIN Z
General Specifications
2007 Ford Focus L4-2.3L VIN ZSECTION General Specifications
Cylinder Head
Head gasket surface flatness 0.1 mm/general 0.05 mm/200 x 200 (0.003 in./general) (0.0019 in./7.87 x 7.87)
Valve lift @ zero lash (exhaust) 7.4 mm (0.30 inch)
Valve lift @ zero lash (intake) 7.9 mm (0.31 inch)
Valve guide diameter 5.509-5.539 mm (0.216-0.218 inch)
Valve seat width - intake/exhaust 0.99-1.84 mm (0.038-0.072 inch)
Valve seat angle 45°
Valve seat runout 0.075 mm (0.0029 inch)
Valve lash adjuster bore diameter 31.00-31.03 mm (1.220-1.221 inch)
Cam bore diameter 25.015-25.040 mm (0.984-0.985 inch)
Valve
Valve head diameter - intake 34.85-35.15 mm (1.372-1.383 inch)
Valve head diameter - exhaust 29.85-30.15 mm (1.175-1.187 inch)
Valve stem diameter - intake 5.470-5.485 mm (0.2153-0.2159 inch)
Valve stem diameter - exhaust 5.465-5.480 mm (0.2151-0.2157 inch)
Valve stem-to-guide clearance - intake 0.0027 mm (0.00010 inch)
Valve stem-to-guide clearance - exhaust 0.0029 mm (0.00011 inch)
Valve face runout 0.05 mm (0.0019 inch)
Valve face angle 45°
Valve Spring - Compression Pressure
Intake and exhaust (installed) 17.5 kg (38.667 lb)
Intake (valve open) 8.9 44 kg (97.032 lb) mm (0.35 inch) of lift
Exhaust (valve open) 7.4 42 kg (93.338 lb) mm (0.29 inch) of lift
Free length 44.92 mm (1.768 inch)
Assembled height 37.9 mm (1.492 inch)
Valve Tappet
Diameter 30.97-30.98 mm (1.2192-1.2196 inch)
Tappet-to-valve clearance - intake 0.22- 0.28 mm (0.008-0.011 inch)
Tappet-to-valve clearance - exhaust 0.27-0.33 mm (0.010-0.013 inch)
Tappet-to-bore clearance 0.02-0.06 mm (0.0007-0.0023 inch)
Camshaft
Lobe lift - intake 8.24999 mm (0.324 inch)
Lobe lift - exhaust 7.80007 mm (0.307 inch)
Runout (1)a 0.03 mm (0.001 inch)
Thrust clearance 0.09-0.24 mm (0.003-0.009 inch)
Journal diameter 24.96-24.98 mm (0.982-0.983 inch)
Journal-to-bore clearance 0.035-0.080 mm (0.001-0.003 inch)
a No. 3 Journal - Supported by No. 1 and No. 5 journals.
Head gasket surface flatness 0.1 mm/general 0.05 mm/200 x 200 (0.003 in./general) (0.0019 in./7.87 x 7.87)
Valve lift @ zero lash (exhaust) 7.4 mm (0.30 inch)
Valve lift @ zero lash (intake) 7.9 mm (0.31 inch)
Valve guide diameter 5.509-5.539 mm (0.216-0.218 inch)
Valve seat width - intake/exhaust 0.99-1.84 mm (0.038-0.072 inch)
Valve seat angle 45°
Valve seat runout 0.075 mm (0.0029 inch)
Valve lash adjuster bore diameter 31.00-31.03 mm (1.220-1.221 inch)
Cam bore diameter 25.015-25.040 mm (0.984-0.985 inch)
Valve
Valve head diameter - intake 34.85-35.15 mm (1.372-1.383 inch)
Valve head diameter - exhaust 29.85-30.15 mm (1.175-1.187 inch)
Valve stem diameter - intake 5.470-5.485 mm (0.2153-0.2159 inch)
Valve stem diameter - exhaust 5.465-5.480 mm (0.2151-0.2157 inch)
Valve stem-to-guide clearance - intake 0.0027 mm (0.00010 inch)
Valve stem-to-guide clearance - exhaust 0.0029 mm (0.00011 inch)
Valve face runout 0.05 mm (0.0019 inch)
Valve face angle 45°
Valve Spring - Compression Pressure
Intake and exhaust (installed) 17.5 kg (38.667 lb)
Intake (valve open) 8.9 44 kg (97.032 lb) mm (0.35 inch) of lift
Exhaust (valve open) 7.4 42 kg (93.338 lb) mm (0.29 inch) of lift
Free length 44.92 mm (1.768 inch)
Assembled height 37.9 mm (1.492 inch)
Valve Tappet
Diameter 30.97-30.98 mm (1.2192-1.2196 inch)
Tappet-to-valve clearance - intake 0.22- 0.28 mm (0.008-0.011 inch)
Tappet-to-valve clearance - exhaust 0.27-0.33 mm (0.010-0.013 inch)
Tappet-to-bore clearance 0.02-0.06 mm (0.0007-0.0023 inch)
Camshaft
Lobe lift - intake 8.24999 mm (0.324 inch)
Lobe lift - exhaust 7.80007 mm (0.307 inch)
Runout (1)a 0.03 mm (0.001 inch)
Thrust clearance 0.09-0.24 mm (0.003-0.009 inch)
Journal diameter 24.96-24.98 mm (0.982-0.983 inch)
Journal-to-bore clearance 0.035-0.080 mm (0.001-0.003 inch)
a No. 3 Journal - Supported by No. 1 and No. 5 journals.
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.