The Hurst Roll Control is a system designed to provide positive locking action for drag racing, enhancing burnout performance and reducing wheel roll. Installation is straightforward with detailed instructions and diagrams, ensuring proper function and safety. Mounting the solenoid and connecting brake lines are key steps for effective operation.
Overview of Hurst Roll Control and Its Importance
The Hurst Roll Control is a specialized system designed primarily for drag racing applications, enabling drivers to lock the front wheels for controlled burnouts. This system enhances tire heating and improves traction, reducing the likelihood of rolling the lights. Its importance lies in its ability to provide precise control over the front brakes, allowing for consistent and effective burnout performance. The system is easy to install and integrates seamlessly with existing brake components, making it a popular choice among racers. Proper installation ensures safety and optimal functionality, while incorrect setup can lead to performance issues or brake failure. Understanding its operation is crucial for maximizing its benefits.
Key Components of the Hurst Roll Control System
The Solenoid Valve and Its Function
The solenoid valve is a critical component, controlling brake pressure for momentary front wheel locking. It requires proper NPT fittings and electrical activation to function effectively.
The solenoid valve is a key component of the Hurst Roll Control system, responsible for controlling brake pressure to lock the front wheels during burnouts. It operates electrically, requiring a 12V signal from the ignition switch. Proper installation involves mounting it in the engine compartment, preferably near the master cylinder, and connecting it with 1/4 NPT fittings. The solenoid activates momentarily, holding brake pressure for up to 60 seconds. Incorrect fittings, such as bubble or compression, should never be used, as they can damage the valve. Ensuring the solenoid is correctly installed and connected is crucial for safe and effective operation of the Roll Control system.
Brake Line Fittings and Connections
Proper brake line fittings and connections are critical for the Hurst Roll Control system to function safely and effectively. The solenoid valve requires 1/4 NPT fittings, as other types like bubble or compression fittings can damage the valve and lead to leaks. Brake lines should be connected without cutting stock lines to maintain system integrity. The master cylinder line must be rerouted to the Hurst unit, and a short line should be installed from the Roll Control to the master cylinder. Ensuring all connections are secure and leak-free is essential for proper braking performance and to prevent potential safety hazards during operation. Proper fitting selection and precise installation are vital for reliable functionality.
Pre-Installation Preparation
Gather tools, review instructions, and locate the master cylinder and brake lines. Ensure the engine compartment is clean and accessible for solenoid mounting and line routing.
Identifying the Mounting Location for the Solenoid
Select a spot in the engine compartment close to the master cylinder for the solenoid. Ensure it’s secure, away from heat sources, and accessible for wiring. Use existing brackets or drill new holes for a stable mount. Proper placement ensures efficient operation and prevents damage from heat or vibrations. Follow the manufacturer’s guidelines for optimal positioning to maintain system performance and longevity.
Understanding the Master Cylinder and Brake Line Routing
The master cylinder plays a central role in the brake system, distributing fluid under pressure to the wheels. Brake line routing must be carefully planned to ensure proper function. Identify the front brake line connected to the distribution block, as this will be rerouted to the Hurst Roll Control unit. A short line will then connect the Roll Control back to the master cylinder. Ensure all connections are secure and free from damage. If unsure about routing, consult a detailed diagram or seek professional guidance. Proper routing ensures reliable braking performance and prevents system failure. Avoid cutting stock lines to maintain integrity and simplify future repairs.
Step-by-Step Installation Process
- Mount the solenoid in the engine compartment near the master cylinder.
- Connect the brake lines to the Hurst Roll Control unit.
- Install a short line from the Roll Control to the master cylinder.
Mounting the Solenoid in the Engine Compartment
Mounting the solenoid in the engine compartment is a critical step. Choose a location close to the master cylinder for easy access and minimal brake line routing. Ensure the area is clear of obstructions and heat sources. Secure the solenoid using the provided hardware, making sure it is tightly fastened. Proper mounting ensures reliable operation and prevents damage to the system. Some users recommend double-checking the fitment and ensuring the solenoid ports align correctly with the brake lines. Using the correct NPT fittings is essential to avoid leaks and maintain system integrity. Once mounted, proceed to connect the brake lines as instructed.
Connecting the Brake Lines to the Hurst Unit
Connecting the brake lines to the Hurst Roll Control unit requires precision. Use 3/8-inch NPT fittings, as they are compatible with the solenoid ports. Avoid using VW bubble-flair or standard SAE compression fittings, as they may not seal properly. Ensure the brake lines are securely attached to the Hurst unit, following the manufacturer’s routing guidelines. Properly flare the lines to prevent leaks and maintain system integrity. Double-check all connections for tightness before testing the system. Incorrect fittings or improper connections can lead to brake failure, so attention to detail is crucial. Always refer to the installation manual for specific fitting recommendations and procedures.
Installing the Short Line from the Roll Control to the Master Cylinder
Installing the short line from the Hurst Roll Control to the master cylinder is a critical step. Begin by disconnecting the existing brake line from the master cylinder and attach it to the Hurst unit. Next, install a short brake line from the roll control solenoid back to the master cylinder. Ensure all connections are secure and properly flared to prevent leaks. Use the correct fittings, such as 3/8-inch NPT, to maintain system integrity. This setup allows the solenoid to control front brake pressure effectively. After installation, test the system by actuating the solenoid to confirm proper function and ensure no fluid leaks are present.
Post-Installation Testing and Troubleshooting
After installation, test the Hurst Roll Control by actuating the solenoid to ensure proper function. Check for leaks and confirm the system holds pressure. Address any issues like activation problems or fluid leaks promptly. Consult the manual for troubleshooting guidance to ensure optimal performance and safety.
Testing the Roll Control System for Proper Function
Testing the Hurst Roll Control system ensures proper operation. Start by actuating the solenoid to confirm it engages and disengages smoothly. Check for any fluid leaks at connections and ensure the system holds pressure when activated. Test the electrical connection to the solenoid, verifying it receives power when the ignition is on. Pump the brake pedal to ensure the front brakes function correctly after disengaging the roll control. If issues arise, consult the manual for troubleshooting steps. Proper testing confirms the system is installed correctly and ready for use, ensuring both performance and safety.
Addressing Common Issues and Adjustments
Common issues during Hurst Roll Control installation may include fluid leaks, improper solenoid function, or brake line routing problems. Inspect all connections for leaks and tighten fittings as needed. Ensure the solenoid receives proper electrical power and ground. If the system fails to engage, check the brake pedal operation and wiring connections. Adjustments may involve re-routing brake lines for better flow or ensuring the solenoid is mounted securely. Consult the installation manual for troubleshooting guides specific to your setup. Testing the system after adjustments is crucial to confirm functionality. Addressing these issues ensures reliable performance and safety, allowing you to enjoy the benefits of the Roll Control system.
Safety Precautions and Best Practices
When installing the Hurst Roll Control, adhere to all safety guidelines to avoid system failure or injury. Always use NPT fittings for the solenoid, as bubble or compression fittings can lead to leaks or damage. Ensure proper electrical connections to prevent malfunctions. Testing the system after installation is critical—actuate the solenoid and check for leaks or irregular operation. Avoid using the Roll Control on public roads, as it is designed for racing purposes. Regularly inspect brake lines and connections for wear or damage. Follow the manufacturer’s instructions precisely and consult a professional if unsure. Proper installation ensures both performance and safety.
