Maxima V6-3.5L (VQ35DE) (2007)
Piston Ring: Specifications
PISTON RING SIDE CLEARANCE
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Measure side clearance of piston ring and piston ring groove with feeler gauge.
Standard Side Clearance
Top ring: 0.045 - 0.080 mm (0.0018 - 0.0031 in)
2nd ring: 0.030 - 0.070 mm (0.0012 - 0.0028 in)
Oil ring: 0.065 - 0.135 mm (0.0026 - 0.0053 in)
Maximum Limit
Top ring: 0.11 mm (0.0043 in)
2nd ring: 0.1 mm (0.004 in)
Oil ring: -
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If out of specification, replace piston ring assembly. If clearance exceeds maximum limit with new rings, replace piston
PISTON RING END GAP
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Insert piston ring until it is in the middle of the cylinder bore and measure the end gap.
Standard
Top ring: 0.23 - 0.33 mm (0.0091 - 0.0130 in)
2nd ring: 0.33 - 0.48 mm (0.0130 - 0.0189 in)
Oil ring: 0.20 - 0.50 mm (0.0079 - 0.0197 in)
Limit:
Top ring: 0.54 mm (0.0213 in)
2nd ring: 0.80 mm (0.0315 in)
Oil ring: 0.95 mm (0.0374 in)
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If out of specification, replace piston ring. If gap still exceeds the limit even with a new ring, re-bore cylinder and use oversized piston and piston
ring.