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SERVICE DATA AND SPECIFICATIONS (SDS) EM-251 < SERVICE DATA AND SPECIFICATIONS (SDS) [MR20DD] C D E F G H I J K L M A EM N P O Cylinder Head INFOID:0000000010735682 CYLINDER HEAD Unit: mm (in) VALVE DIMENSIONS Unit: mm (in) VALVE GUIDE 346H 3.46 (0.1362) 348H 3.48 (0.1370) 350H 3.50 (0.1378) Identification mark Thickness Items Standard Limit Head surface distortion — 0.1 (0.004) Normal cylinder head height “H” 130.9 (5.15) — PBIC0924E Valve head diameter “D” Intake 33.8 - 34.1 (1.331 - 1.343) Exhaust 27.6 - 27.9 (1.087 - 1.098) Valve length “L” Intake 106.42 (4.19) Exhaust 105.41 (4.15) Valve stem diameter “d” Intake 5.465 - 5.480 (0.2152 - 0.2157) Exhaust 5.455 - 5.470 (0.2148 - 0.2154) Valve seat angle “ α ” 45 ° 15 ′ - 45 ° 45 ′ Valve margin “T” Intake 1.2 (0.047) Exhaust 1.4 (0.055) JSBIA1166ZZ |