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 MANUALSACURA20043.5RLREPAIR AND DIAGNOSISENGINE MECHANICALMECHANICAL3.5L V6 ENGINEOVERHAULCYLINDER BLOCK ASSEMBLYPISTON & ROD ASSEMBLY
2004 Acura 3.5RL
Piston & Rod Assembly
2004 Acura 3.5RLSECTION Piston & Rod Assembly
- Connecting rods are available in 4 tolerance ranges. Rod size depends on crank journal bore. A reference number between 1 and 4 is stamped on side of rod's big end bore. Any combination of numbers between 1 and 4 may be found in engine.NOTE: Reference numbers are for big end bore code. Numbers do not indicate rod position in engine.
- Nominal connecting rod big end bore is 2.24" (57 mm). Install piston and connecting rod with arrow on top of piston toward front of engine, and connecting rod oil hole toward offset mark on piston. See Fig 1.
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.