The Honda Del Sol, a targa-topped coupe produced from 1992 to 1997, occupies a unique space in the automotive landscape. While not originally conceived as a hardcore machine, its lightweight chassis and responsive handling have made it a compelling platform for amateur and professional racing alike. This guide explores the evolution, modifications, and competitive history of the Honda Del Sol race car, detailing why this civic-minded sports car continues to captivate builders and fans on the track.
From Civic SiR to Track Weapon: The Del Sol's Racing Heritage
To understand the Honda Del Sol race car, one must first appreciate its road-going origins. Launched as the successor to the CRX SiR, the Del Sol was engineered from the ground up with performance in mind. The base models featured a capable 1.6-liter SOHC VTEC engine, but it was the Si and SiR variants that packed the 1.6-liter B16A2 engine, producing 160 horsepower. This robust powerplant, combined with the car's relatively light curb weight of approximately 2,400 pounds, provided an ideal foundation for significant power upgrades without excessive structural reinforcement.
Chassis Dynamics and Handling Advantages
The Del Sol's chassis is a key reason for its racing success. Unlike many of its contemporaries, it utilized a front-wheel-drive layout with a transverse engine layout, similar to the Civic and Integra. This configuration, paired with a solid rear axle, results in a predictable and balanced chassis. The car exhibits oversteer characteristics that are generally easy to correct, making it forgiving for drivers learning the limits of adhesion. For race preparation, this inherent stability allows tuners to focus on suspension geometry, brake upgrades, and traction control rather than fighting an unpredictable platform.
Essential Modifications for Competitive Performance
Transforming a street-legal Del Sol into a race car involves a series of critical modifications that enhance power, durability, and safety. While the specific setup depends on the racing class, certain upgrades are almost universal among competitive builders. These modifications not only improve lap times but also ensure the vehicle can withstand the rigors of repeated track sessions.
Engine Management and Tuning: Replacing the stock ECU with a programmable unit is essential for optimizing ignition timing, fuel delivery, and boost pressure for turbocharged variants.
Suspension Overhaul: Installing performance coilovers, adjustable control arms, and anti-roll bars allows for precise tuning of camber, caster, and toe for maximum grip.
Braking System Enhancements: Upgrading to larger brake discs, performance pads, and braided stainless steel lines provides the necessary stopping power for high-speed circuits.
Weight Reduction: Removing interior panels, replacing glass with acrylic, and using lightweight materials reduces unsprung mass, improving handling responsiveness.
The Honda Del Sol in Competition: Classes and Circuits
The versatility of the Honda Del Sol race car is evident in its participation across multiple racing disciplines. It is a common sight in amateur road racing series, time trial events, and even some forms of autocross. The car fits neatly into several established racing classes, often categorized alongside other popular four-cylinder platforms.
