Engine Specifications

The 2011 Hyundai Sonata 2.4 GDI model features a 2.4-liter four-cylinder engine. This engine produces 250 Nm (184 lb-ft) of torque at 4250 rpm. The engine is part of Hyundai's Theta II series and utilizes gasoline direct injection (GDI) technology.

Torque Output

The torque output of 250 Nm provides the Sonata with strong mid-range performance. This torque figure contributes to the car's estimated 0-60 mph acceleration time of 7.2 seconds. The engine's power delivery is optimized for everyday driving situations, offering good responsiveness in city and highway conditions.

Cylinder Head Torque Specifications

When working on the cylinder head, it's crucial to follow the proper torque sequence and specifications:

  • Step 1: Tighten all head bolts to 22 ft-lbs (30 Nm)
  • Step 2: Rotate each bolt an additional 90 degrees
  • Step 3: For final tightening, rotate each bolt another 90 degrees

It's important to note that new head bolts should be used when reassembling the engine, as the original bolts are designed for one-time use only.

Other Torque Specifications

Here are some additional torque specifications for the 2011 Hyundai Sonata 2.4 engine:

  • Exhaust manifold nuts: 38 ft-lbs (51.5 Nm)
  • Crankshaft pulley bolt: 127 ft-lbs (172.2 Nm)
  • Spark plugs: 20 ft-lbs (27.1 Nm)
  • Timing chain cover bolts (M6): 6.5 ft-lbs (8.8 Nm)
  • Timing chain cover bolts (M8): 16 ft-lbs (21.7 Nm)

Performance Implications

The torque characteristics of the 2.4 GDI engine contribute to the Sonata's overall performance profile. With a top speed of 210 km/h (131 mph), the car offers a good balance of efficiency and performance. The torque curve is designed to provide strong acceleration in the most commonly used speed ranges for daily driving.

Maintenance Considerations

When performing maintenance or repairs that involve torque-critical components, it's essential to use a calibrated torque wrench and follow the manufacturer's specifications. Proper torque application ensures optimal engine performance and prevents potential damage or premature wear of engine components.

FAQs About 2011 Hyundai Sonata 2.4 Engine Torque

    • What is the peak torque of the 2011 Hyundai Sonata 2.4 engine?
      The peak torque is 250 Nm (184 lb-ft) at 4250 rpm.
    • Why is it important to follow torque specifications?
      Following torque specs ensures proper sealing, prevents component damage, and maintains optimal engine performance.
    • Can I reuse cylinder head bolts when reassembling the engine?
      No, it's recommended to use new cylinder head bolts as they are designed for one-time use to ensure proper clamping force.