The HKS Camshaft 2202-RN138 is a high-performance exhaust camshaft specifically designed for the Nissan RB26DETT engine, particularly optimized for the BNR34 Skyline GT-R model. This camshaft is part of HKS's Step 2 series, focusing on enhancing engine output for motorsport and high-performance applications.

Key Features:

• Duration and Valve Timing:

  • Exhaust Duration: 272°
  • Maximum Valve Lift: 10.2 mm
  • Maximum RPM Range: Approximately 10,000 RPM (depending on engine setup)
  • Valve Timing:
    • Open (BBDC): 75°
    • Close (ATDC): 45°
    • Lobe Center (BTDC): 113°
    • Total Duration (at 0mm valve lift): 300°
    • Total Duration (at 1mm valve lift): 236°

• Performance Enhancements:

  • Increased Valve Lift and Duration: These modifications allow for enhanced exhaust flow, improving engine power and efficiency, especially at higher RPMs.
  • Motorsport Focused: Designed for closed-circuit racing, this camshaft improves throttle response and overall performance, making it ideal for high-performance driving.

• Compatibility:

  • Engine Type: Nissan RB26DETT
  • Vehicle Model: Nissan Skyline GT-R BNR34
  • Valve Springs Required: HKS Step 2 strengthened valve springs (Part No. 22001-AN001), designed to handle the increased lift and higher RPMs safely.

• Installation Requirements:

  • Cylinder Head Modification: The cylinder head must be modified to provide 0.5–1.0 mm clearance between the camshaft lobes and the head for smooth operation.
  • Valve Clearance Adjustment: Since the base circle diameter is smaller than stock, valve clearance must be adjusted during installation.

• Supporting Modifications:

  • Valve Springs: HKS Step 2 strengthened valve springs are required for safe operation at high RPMs.

• Additional Notes:

  • Motorsport Use: This camshaft is developed for closed-circuit racing and motorsport. It may not be suitable for street use in certain regions due to local emissions regulations.
  • Professional Installation Recommended: Installation requires precision and careful adjustments, so professional installation is advised to ensure proper setup and engine safety.

The 2202-RN138 camshaft is an excellent choice for performance enthusiasts looking to extract maximum power from the Nissan RB26DETT engine, particularly in motorsport environments where high RPMs and quick throttle response are crucial.