Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSNISSAN-DATSUN2004SENTRA L4-2.5L (QR25DE)REPAIR AND DIAGNOSISSPECIFICATIONSMECHANICAL SPECIFICATIONSENGINECYLINDER BLOCK ASSEMBLYCONNECTING ROD, ENGINE
2004 Nissan-Datsun Sentra L4-2.5L (QR25DE)
Connecting Rod, Engine
2004 Nissan-Datsun Sentra L4-2.5L (QR25DE)SECTION Connecting Rod, Engine
CONNECTING ROD
Center distance 143.00 - 143.10 mm (5.63 - 5.63 in.)
Bend [per 100 (3.94)] Limit 0.15 mm (0.0059 in.)
Torsion [per 100 (3.94)] Limit 0.30 mm (0.0118 in.)
Connecting rod small end inner diameter 22.000 - 22.012 mm (0.7874 - 0.7879 in.)
Connecting rod small end inner diameters
Grade No.O 20.000 - 20.006 mm (0.7874 - 0.7876 in.)
Grade No.1 20.006 - 20.012 mm (0.7876 - 0.7879 in.)
Connecting rod big end inner diameter 48.000 -48.013 mm (1.8898- 1.8903 in.)
Side clearance
Standard 0.20 - 0.35 mm (0.0079 - 0.0138 in.)
Limit 0.50 mm (0.0197 in.)
Connecting rod bearing housing
Grade No.O 48.000 - 48.001 mm (1.8898 - 1.8898 in.)
Grade No.1 48.001 - 48.002 mm (1.8898 - 1.8898 in.)
Grade No.2 48.002 - 48.003 mm (1.8898 - 1.8899 in.)
Grade No.3 48.003 - 48.004 mm (1.8899 - 1.8899 in.)
Grade No.4 48.004 - 48.005 mm (1.8899 - 1.8899 in.)
Grade No.5 48.005 - 48.006 mm (1.8899 - 1.8900 in.)
Grade No.6 48.006 - 48.007 mm (1.8900 - 1.8900 in.)
Grade No.7 48.007 - 48.008 mm (1.8900 - 1.8901 in.)
Grade No.8 48.008 - 48.009 mm (1.8901 - 1.8901 in.)
Grade No.9 48.009 - 48.010 mm (1.8901 - 1.8902 in.)
Grade No.A 48.010 - 48.011 mm (1.8902 - 1.8902 in.)
Grade No.B 48.011 - 48.012 mm (1.8902 - 1.8902 in.)
Grade No.C 48.012 - 48.013 mm (1.8902 - 1.8903 in.)
*: After installing in connecting rod
Connecting rod bolt
Step 1: 18.6 - 20.6 Nm (1.9 - 2.1 kg-m, 14 -15 ft. lbs.)
Step 2: 85° - 95° (target 90° degrees)
Center distance 143.00 - 143.10 mm (5.63 - 5.63 in.)
Bend [per 100 (3.94)] Limit 0.15 mm (0.0059 in.)
Torsion [per 100 (3.94)] Limit 0.30 mm (0.0118 in.)
Connecting rod small end inner diameter 22.000 - 22.012 mm (0.7874 - 0.7879 in.)
Connecting rod small end inner diameters
Grade No.O 20.000 - 20.006 mm (0.7874 - 0.7876 in.)
Grade No.1 20.006 - 20.012 mm (0.7876 - 0.7879 in.)
Connecting rod big end inner diameter 48.000 -48.013 mm (1.8898- 1.8903 in.)
Side clearance
Standard 0.20 - 0.35 mm (0.0079 - 0.0138 in.)
Limit 0.50 mm (0.0197 in.)
Connecting rod bearing housing
Grade No.O 48.000 - 48.001 mm (1.8898 - 1.8898 in.)
Grade No.1 48.001 - 48.002 mm (1.8898 - 1.8898 in.)
Grade No.2 48.002 - 48.003 mm (1.8898 - 1.8899 in.)
Grade No.3 48.003 - 48.004 mm (1.8899 - 1.8899 in.)
Grade No.4 48.004 - 48.005 mm (1.8899 - 1.8899 in.)
Grade No.5 48.005 - 48.006 mm (1.8899 - 1.8900 in.)
Grade No.6 48.006 - 48.007 mm (1.8900 - 1.8900 in.)
Grade No.7 48.007 - 48.008 mm (1.8900 - 1.8901 in.)
Grade No.8 48.008 - 48.009 mm (1.8901 - 1.8901 in.)
Grade No.9 48.009 - 48.010 mm (1.8901 - 1.8902 in.)
Grade No.A 48.010 - 48.011 mm (1.8902 - 1.8902 in.)
Grade No.B 48.011 - 48.012 mm (1.8902 - 1.8902 in.)
Grade No.C 48.012 - 48.013 mm (1.8902 - 1.8903 in.)
*: After installing in connecting rod
Connecting rod bolt
Step 1: 18.6 - 20.6 Nm (1.9 - 2.1 kg-m, 14 -15 ft. lbs.)
Step 2: 85° - 95° (target 90° degrees)
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.