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SPECIFICATIONS 2.5L ENGINE DESCRIPTION SPECIFICATION General Specification Type 60° V-6 SOHC (Per Bank) Number of Cylinders 6 Displacement 2.5 Liters (152 cu. in.) Bore 83.5 mm (3.29 in.) Stroke 76.0 mm (2.99 in.) Compression Ratio 9.4:1 (Federal Emissions) 9.0:1 (California Emissions) Firing Order 1-2-3-4-5-6 Compression Pressure 1451 kPa (211 psi) —(California Emission) 1393 kPa (202 psi) Compression Pressure (Minimum) 1109 kPa (192 psi) —(California Emission) 1059 kPa (154 psi) Variation Between 98 kPa (14 psi) Cylinder Block Cylinder Bore Diameter 83.5–83.53 mm (3.2874–3.2886 in.) Out-of-Round (Max.) 0.01 mm (0.0004 in.) Taper (Max.) 0.01 mm (0.0004 in.) Flatness of Top Surface 0.05 mm (0.002 in.) Service Limit 0.1 mm (0.004 in.) Grinding Limit* 0.2 mm (0.008 in.) *Includes the combined surface grinding of cylinder head and block. DESCRIPTION SPECIFICATION Pistons Piston Diameter 83.5 mm (3.29 in.) Clearance in Cylinder 0.02–0.04 mm (0.0008–0.0016 in.) Piston Pins Press-in Load (at room 7350–17200 N (1652–3858 lbs.) Diameter 22.0 mm (0.87 in.) Piston Rings Ring Gap—Top 0.25–0.40 mm (0.0098–0.0157 in.) Wear Limit 0.8 mm (0.031 in.) Ring Gap—2nd 0.40–0.55 mm (0.0157–0.0217 in.) Wear Limit 0.8 mm (0.031 in.) Ring Gap—Oil Control 0.15–0.50 mm (0.0059–0.0197 in.) Wear Limit 1.0 mm (0.039 in.) Ring Side Clearance— 0.03–0.07 mm (0.0012–0.0028 in.) Wear Limit 0.10 mm (0.004 in.) Ring Side Clearance— 0.02–0.06 mm (0.0008–0.0024 in.) Wear Limit 0.10 mm (0.004 in.) Connecting Rod Bearing Diametrical 0.02–0.05 mm (0.0008–0.0020 in.) Wear Limit 0.10 mm (0.004 in.) Side Clearance (big end) 0.10–0.25 mm (0.0039–0.0098 in.) Wear Limit 0.40 mm (0.016 in.) JX ENGINE 9 - 61 |