Maxima V6-35L (VQ35DE) (2007) Cylinder Head Assembly Valve Spring Specs
Valve to valve guide clearance standard
Intake: 0.020 - 0.053 mm (0.0008 - 0.0021 in)
Exhaust: 0.040 - 0.073 mm (0.0016 - 0.0029 in)
Valve to valve guide clearance limit
Intake: 0.08 mm (0.0031 in)
Exhaust: 0.1 mm (0.004 in)
c. If it exceeds the limit, replace valve or valve guide.
VALVE GUIDE REPLACEMENT
When valve guide is removed, replace with oversized [0.2 mm (0.008 in)] valve guide.
1. To remove valve guide, heat cylinder head to 110° to 130°C (230° to 266°F) by soaking in heated oil.
2. Drive out the valve guide with a press [under a 20 kN (2.2 US ton) pressure] or hammer and suitable tool.
3. Ream cylinder head valve guide hole.
Valve guide hole diameter (for service parts), intake and exhaust: 10.175 - 10.196 mm (0.4006 - 0.4014 in)