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DESCRIPTION SPECIFICATION VALVE SPRINGS Free Length 49.962 mm (1.967 in.) Spring Tension valve closed 378 N @ 41.66 mm (85 lbs. @ 1.64 in.) valve open 890 N @ 30.89 mm (200 lbs. @ 1.212 in.) Number of Coils 6.5 Installed Height 41.66 mm (1.64 in.) Wire Diameter 4.50 mm (0.177 in.) HYDRAULIC TAPPETS Body Diameter 22.949 – 22.962 mm (0.9035 – 0.9040 in.) Clearance (to bore) 0.0279 – 0.0610 mm (0.0011 – 0.0024 in.) Dry Lash 1.524 – 5.334 mm (0.060 – 0.210 in.) Push Rod Length 175.64 – 176.15 mm (6.915 – 6.935 in.) OIL PRESSURE Curb Idle (Min.*) 41.4 kPa (6 psi) @ 3000 rpm 207 – 552 kPa (30 – 80 psi) Oil Pressure Bypass Setting 62 – 103 kPa (9 – 15 psi) Switch Actuating 34.5 – 48.3 kPa (5 – 7 psi) * If oil pressure is zero at curb idle, DO NOT RUN ENGINE. DESCRIPTION SPECIFICATION OIL PUMP Clearance over Rotors 0.0381 mm (0.0015 in.) Inner Rotor Thickness 20.955 mm (0.825 in.) Outer Rotor Clearance 0.3556 mm (0.014 in.) Outer Rotor Diameter 62.7126 mm (2.469 in.) Outer Rotor Thickness 20.955 mm (0.825 in.) Tip Clearance between (Max.) 0.2032 mm (0.008 in.) PISTONS Clearance at Top of Skirt 0.013 – 0.038 mm (0.0005 – 0.0015 in.) Land Clearance (Diam.) 0.635 – 1.016 mm (0.025 – 0.040 in.) Piston Length 86.360 mm (3.40 in.) Piston Ring Groove Groove #1&2 4.572 – 4.826 mm (0.180 – 0.190 in.) Groove #3 3.810 – 4.064 mm (0.150 – 0.160 in.) Weight 592.6 – 596.6 grams (20.90 – 21.04 oz.) 9 - 130 5.2L ENGINE DN SPECIFICATIONS (Continued) |