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VALVES DESCRIPTION SPECIFICATION Metric Standard Face Angle 45° - 45.5° Head Diameter Intake 48.52 - 48.78 mm 1.9103 - 1.9205 in. Exhaust 36.87 - 37.13 mm 1.4516 - 1.4618 in. Length (Overall) Intake 113.45 - 114.21 mm 4.4666 - 4.4965 in. Exhaust 114.92 - 115.68 mm 4.5244 - 4.5543 in. Stem Diameter Intake 6.931 - 6.957 mm 0.2729 - 0.2739 in. Exhaust 6.902 - 6.928 mm 0.2717 - 0.2728 in. Stem-to-Guide Clearance Intake 0.018 - 0.069 mm 0.0008 - 0.0028 in. Exhaust 0.047 - 0.098 mm 0.0019 - 0.0039 in. Max. Allowable Stem-to-Guide Intake 0.069 mm 0.0028 in. Exhaust 0.098 mm 0.0039 in. Valve Lift (Zero Lash) Intake 12.00 mm 0.472 in. Exhaust 12.00 mm 0.472 in. VALVE SPRING DESCRIPTION SPECIFICATION Metric Standard Free Length (Approx) Intake 48.18 mm 1.896 in. Exhaust - w/damper 48.2 mm 1.897 in. Spring Force (Valve Closed) Intake 332.0 - 368.0 N @ 40.12 mm 74.63 - 82.72 lbs. @ 1.5795 in. Exhaust - (without damper) 356 - 394 N @ 39.12 mm 80.031 - 88.57 lbs. @ 1.54 in. Spring Force (Valve Open) Intake 948.0 - 1038.0 N @ 28.12 mm 213.2 - 233.8 lbs. @ 1.107 in. Exhaust - without damper 974 - 956 N @ 27.12 mm 218.8 - 215.1 lbs. @ 1.067 in. Number of Coils Intake 7.30 Exhaust 7.15 Wire Diameter 9 - 1188 ENGINE - 3.7L SERVICE INFORMATION WK |