GENERATION_02 [SL]

// THE ARCHITECTURE

The 2nd Generation Civic (Chassis Code: SL) arrived in 1980. Marketing called it the "Super Civic." In data terms, this was a major version update (v2.0), not a patch.

The logic shifted from "Maximum Minimalism" (Gen 1) to "Optimized Comfort." The car grew larger, the glass area increased by 20%, and the wheelbase was extended. It was the first step toward the "Civic" becoming a primary vehicle rather than just a city runabout.

// THE HEART (POWERTRAIN)

"The CVCC-II Refinement"

Engine Code: EM / EJ Type: Inline-4 SOHC (CVCC-II) Displacement: 1335cc - 1488cc

The engine received a massive "refactoring." The original CVCC worked, but it was complex. CVCC-II streamlined the intake/exhaust flow.

• Cross-Flow Head: The intake and exhaust valves were moved to opposite sides of the cylinder head. This improved airflow efficiency (volumetric efficiency) and heat dissipation.

• Catalytic Converter: Introduced to meet tightening EPA standards, but Honda tuned the exhaust pulses to minimize power loss.

• The Output:

  • Horsepower: 67 - 69 hp.

  • Torque: 77 - 79 lb-ft.

  • Note: While peak numbers were low, the torque curve was flattened for better city drivability.

// THE RITUAL (TRANSMISSION)

"The Overdrive"

The 5-speed manual transmission became widely available, introducing an "Overdrive" gear for highway cruising.

• The 5-Speed: A definitive upgrade. The 5th gear dropped RPMs at highway speeds, reducing noise and wear.

• The Linkage: The shift feel was refined with stiffer bushings, moving away from the "loose" feel of the Gen 1 to a more notched, precise engagement.

• Rotary Hondamatic: The semi-auto lost its quadrant selector and gained a standard star-pattern shifter, though it still required manual intervention.

// THE EVOLUTION (THE 1500 S) 

"The Immediate Predecessor"

In 1983 (the final year of production), Honda released the Civic S. This is the specific trim that birthed the "Si" concept. It was not just an appearance package; it was a hardware upgrade.

• Suspension Tuning: Stiffer springs and firmer dampers.

• Rear Sway Bar: Standardized to induce rotation in corners.

• Tires: Shod with Michelin 165/70SR13 radials (high performance for the time).

• Visuals: Blacked-out grille, black window trim, and the iconic Red "S" badge.

• Legacy: The "S" proved there was a market for a "Driver's Civic" in the US.

// SYSTEM SPECIFICATIONS

[POWERTRAIN]

• Engine Code: EM (1.5L)

• Displacement: 1488 cc

• Induction: 3-Barrel Keihin Carburetor

• Redline: 6,000 rpm

[CHASSIS_DYNAMICS]

• Curb Weight: ~1,650 - 1,750 lbs

• Suspension: 4-Wheel Independent MacPherson Strut with Rear Stabilizer (S Trim)

• Brakes (Front): Disc

• Brakes (Rear): Drum

[ROLLING_STOCK]

• Wheels: 13-inch Steel (Styled Rings)

• Tires: 165/70SR13 (Michelin on S Trim)

• Bolt Pattern: 4 x 100