What are the differences between R33 Skyline GTST Spec 1 and Spec 2?

The differences between the R33 Skyline GTST Spec 1 and Spec 2 models can be summarized as follows:

Overview

During the production run of the R33 model, Nissan introduced a mid-life facelift that resulted in two distinct variants: Spec 1 and Spec 2. While many changes apply across all models of the R33, this comparison focuses primarily on the GTST variant.

Key Differences

Exterior Changes

• Front Bumper:
  • Spec 1: More edgy design with different indicators and driving lamps.
  • Spec 2: Features a more refined front bumper design.
• Headlights:
  • Spec 1: Taller and more rounded.
  • Spec 2: Slimmer and more rectangular in appearance.
• Grille:
  • Spec 1: More slats present.
  • Spec 2: Fewer slats, resembling a GTR design but with a more closed appearance.
• Bonnet:
  • Spec 1: Standard design.
  • Spec 2: Features a droop at the leading edge to accommodate the new grille design and has more pronounced bulge lines.
• Chin Spoiler: Spec 2 offers an optional chin spoiler that was not available in Spec 1.

Engine and Technical Changes

• Ignition System:
  • Spec 1: Has a coil/spark ignitor unit located on the rocker cover.
  • Spec 2: The ignitor is integrated into the ECU, eliminating the external unit.
• Other Engine Components: Late Spec 2 features a different CAS unit, throttle position sensor, and airflow meter unit, which has a pink label.

Additional Notes

If an R33 GTST is equipped with an RB25DET engine, it is classified as "TYPE-M," regardless of optional extras like bumpers and side skirts. This classification applies to models manufactured between 1993 and 1998. It is important not to confuse this with the "M-Spec," which is specific to the R34 GTR model.

These differences highlight the evolution of the R33 Skyline GTST from Spec 1 to Spec 2, reflecting Nissan's efforts to enhance both aesthetics and performance during its production run.