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Home >> Kia >> 2004 >> Optima EX, 2.4 6 >> Repair and Diagnosis >> Engine Mechanical >> Lubrication System >> 2.4L 4-Cylinder Engine >> Main Moving System >> Connecting Rod >> Installation

Connecting Rod: Installation

  1. Make sure that the front mark of piston and front mark (identification mark) of connecting rod are directed toward front of engine.
  2. When connecting rod cap is installed, make sure that cylinder numbers put on rod and cap at disassembly match.
  3. When new connecting rod is installed, make sure that notches for holding bearing in place are on same side.
    Fig 1: Identifying Connecting Rod Notches
    G00326802Courtesy of KIA MOTORS AMERICA, INC.
  4. Tighten the connecting rod cap nuts.

    Tightening torque

    Connecting rod cap nuts :

    18-22 Nm (180-220 kg.cm, 13-16 lb.ft) + (90°~94°)

  5. Check connecting rod side clearance.

    Side clearance : 0.10-0.25 mm (0.004-0.0098 in.)

    Limit : 0.4 mm (0.0157 in.)

Fig 2: Checking Connecting Rod Side Clearance
G00326803Courtesy of KIA MOTORS AMERICA, INC.