| Production Years | 1982 – 1985 |
|---|---|
| Engine Type | Air-cooled, 4-stroke, Twin (TSCC) |
| Engine Oil | SAE 10W-40 (2.1L – 2.3L) |
| Spark Plug | NGK D8EA (0.6 – 0.7 mm gap) |
| Tire Pressure (F/R) | 1.75 bar / 2.0 bar |
| Battery | YB10L-A2 |
The Suzuki GSX 250 E Black Hawk (GJ53B) occupies a unique position in motorcycling history as one of the primary beneficiaries of Suzuki’s Twin Swirl Combustion Chamber (TSCC) technology. Unlike the standard GS series, the GSX designation signified a leap into 4-valve-per-cylinder heads, where the TSCC design induced a high-velocity swirl of the air-fuel mixture to ensure faster flame propagation and improved thermal efficiency. This engineering choice allowed the 250cc twin to punch significantly above its weight class in the early 1980s.
Technical Engineering Analysis
The GJ53B variant, often referred to as the ‘Black Hawk’ in specific markets, features a robust parallel-twin engine that balances mid-range torque with a respectable top-end rush. The chassis is a traditional steel cradle, providing predictable handling that remains a hallmark of Suzuki’s era-specific design. Its 4-valve head configuration was revolutionary for a sub-400cc machine, offering a glimpse into the performance-oriented future of the GSX line.
Maintenance Guide & Service Requirements
1. Lubrication System
To maintain the integrity of the TSCC valvetrain, high-quality oil is non-negotiable. Use SAE 10W-40 meeting API SE/SF and JASO MA standards.
- Oil Change: 2.1 Liters
- With Filter Change: 2.3 Liters
Regular intervals of 3,000 miles (5,000 km) are recommended to prevent sludge buildup in the narrow oil galleries.
2. Ignition & Electrical
The GJ53B utilizes the NGK D8EA spark plug. For optimal combustion stability, the gap must be precisely set to 0.6 – 0.7 mm. Electrical reliability is anchored by the YB10L-A2 battery; ensure terminals are clean and the charging system maintains 14.0-14.5V at 5,000 RPM.
3. Tires and Chassis
The Black Hawk runs on classic 18-inch wheels. Maintaining correct pressures is vital for the bike’s ‘flickable’ nature:
- Front: 3.00-18 4PR (1.75 bar / 25 psi)
- Rear: 3.75-18 4PR (2.0 bar / 28 psi)
Given the age of these machines, inspect the rim tape and inner tubes (if applicable) for signs of dry rot during every tire change.
Editor’s Verdict
The Suzuki GSX 250 E Black Hawk (GJ53B) remains a highly collectible and rideable classic. Its combination of advanced 80s engine tech and straightforward maintenance makes it an ideal entry point for vintage enthusiasts. Proper adherence to the 10W-40 oil specification and spark plug gapping is the key to preserving the ‘Black Hawk’ legacy for the next generation of riders.