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EM-248 < SERVICE DATA AND SPECIFICATIONS (SDS) [VK56DE] SERVICE DATA AND SPECIFICATIONS (SDS) Valve Guide Unit: mm (in) Valve Seat Unit: mm (in) Valve Spring Valve margin “T” Intake 1.1 (0.043) Exhaust 1.3 (0.051) Items Standard Oversize [0.2 (0.008)] (service) Valve guide Outside diameter 10.023 - 10.034 (0.3946 - 0.3950) 10.223 - 10.234 (0.4025 - 0.4029) Inside diameter (Finished size) 6.000 - 6.018 (0.2362 - 0.2369) — Cylinder head valve guide hole diameter 9.975 - 9.996 (0.3927 - 0.3935) 10.175 - 10.196 (0.4006 - 0.4014) Interference fit of valve guide 0.027 - 0.059 (0.0011 - 0.0023) Items Standard Limit Stem to guide clearance Intake 0.020 - 0.053 (0.0008 - 0.0021) 0.08 (0.0031) Exhaust 0.030 - 0.063 (0.0012 - 0.0025) 0.09 (0.0035) Projection length “L” Intake 12.6 - 12.8 (0.496 - 0.504) Exhaust 12.5 - 12.9 (0.492 - 0.508) KBIA2555E Items Standard Oversize [0.5 (0.020)] (Service) Cylinder head seat recess diameter ″ D ″ Intake 38.000 - 38.016 (1.4961 - 1.4967) 38.500 - 38.516 (1.5157 - 1.5164) Exhaust 32.200 - 32.216 (1.2677 - 1.2683) 32.700 - 32.716 (1.2874 - 1.2880) Valve seat interference fit Intake 0.081 - 0.113 (0.0032 - 0.0044) Exhaust 0.064 - 0.096 (0.0025 - 0.0038) Valve seat diameter ″ d ″ Intake 38.097 - 38.113 (1.4999 - 1.5005) 38.597 - 38.613 (1.5196 - 1.5202) Exhaust 32.280 - 32.296 (1.2709 - 1.2715) 32.780 - 32.796 (1.2905 - 1.2912) KBIA2541E Free height mm (in) 50.58 (1.9913) 2010 Pathfinder |