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Valve Seat

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VALVE SEAT SPECIFICATION

Unit: mm (in)
Items Standard Oversize (Service) [0.5 (0.02)]
G04886222Courtesy of NISSAN MOTOR CO., U.S.A.
G04886135Courtesy of NISSAN MOTOR CO., U.S.A.
Cylinder head seat recess diameter "D" Intake (A) 38.000 - 38.016 (1.4961 - 1.4967) 38.500 - 38.516 (1.5157 - 1.5164)
Exhaust (B) 31.600 - 31.616 (1.2441 - 1.2447) 32.100 - 32.116 (1.2638 - 1.2644)
Valve seat outer diameter Intake 38.097 - 38.113 (1.4999 - 1.5005) 38.597 - 38.613 (1.5196 - 1.5202)
Exhaust 31.680 - 31.696 (1.2472 - 1.2479) 32.180 - 32.196 (1.2669 - 1.2676)
Valve seat interference fit Intake 0.081 - 0.113 (0.0032 - 0.0044)
Exhaust 0.064 - 0.096 (0.0025 - 0.0038)
Height "h" Intake (A) 5.9 - 6.0 (0.232 - 0.236) 5.0 - 5.1 (0.197 - 0.201)
Exhaust (B) 5.9 - 6.0 (0.232 - 0.236) 4.9 - 5.0 (0.193 - 0.197)
Contacting width "W"(1) Intake (A) 1.18 - 1.22 (0.0465 - 0.0480)
Exhaust (B) 1.38 - 1.42 (0.0543 - 0.0559)
Cylinder head seat recess depth (H) 6.0 (0.236)
Depth "L" Intake (A) 41.16 - 41.76 (1.6205 - 1.6441)
Exhaust (B) 41.09 - 41.69 (1.6177 - 1.6413)
(1) Machining data