How To Improve The Tr6 Rear Suspension

How to Improve Your Triumph TR6 Rear Suspension

The Triumph TR6, a classic British sports car, offers a thrilling driving experience. However, its rear suspension, while charmingly vintage, can benefit from some modern upgrades for improved handling, comfort, and reliability. This guide explores various methods to enhance your TR6's rear suspension, transforming your driving experience.

Understanding the TR6's Rear Suspension

The TR6 employs a live axle rear suspension, a system known for its simplicity but also its limitations compared to modern independent setups. This means the left and right wheels move together, impacting handling, especially over uneven surfaces. Understanding the system's weaknesses is the first step toward improvement. Key areas for improvement include:

• Stiffness and Compliance: The stock suspension can be too stiff, leading to a harsh ride, or too compliant, resulting in body roll and poor handling.
• Durability: The original components may have experienced wear and tear, leading to issues like axle tramp and excessive play.
• Handling: The live axle setup inherently limits precise cornering compared to independent suspension systems.

Upgrading Your TR6's Rear Suspension

Several options exist for improving the TR6's rear suspension, ranging from simple maintenance to more significant modifications. Let's delve into each:

1. Routine Maintenance: The Foundation of a Better Ride

Before considering major upgrades, thorough maintenance is crucial. This includes:

• Inspecting and replacing worn bushings: Worn bushings are a common culprit for poor handling and excessive noise. Replace them with high-quality polyurethane or rubber bushings for improved performance and durability.
• Checking and adjusting shock absorbers: Ensure your shock absorbers are functioning correctly. Replacing them with modern gas-charged units significantly improves damping and reduces body roll.
• Lubricating all moving parts: Regular lubrication prevents premature wear and keeps everything running smoothly.

2. Suspension Component Upgrades: Enhancing Performance

Beyond routine maintenance, several upgrades can enhance performance:

• Upgraded leaf springs: Consider replacing the original leaf springs with heavier-duty units or aftermarket options designed for improved handling and reduced body roll. Be mindful of the spring rate to balance ride comfort and handling.
• Anti-roll bar (sway bar): Adding an anti-roll bar significantly reduces body roll in corners, improving handling and stability. Various aftermarket options are available, allowing you to fine-tune the stiffness to your preferences.
• Panhard rod adjustment or replacement: This crucial component helps keep the axle centered. A worn or improperly adjusted Panhard rod can contribute to handling issues. Consider a replacement or adjustable unit to maintain optimal axle alignment.

3. Advanced Modifications: For the Dedicated Enthusiast

For those seeking a significant upgrade, more advanced modifications exist, though they usually require more mechanical expertise and cost:

• Converting to a modern independent rear suspension: This is a substantial undertaking, requiring significant fabrication and modification. While it dramatically improves handling, it's the most complex and expensive option.

Choosing the Right Upgrade Path

The best approach depends on your budget, mechanical skills, and desired level of improvement. Start with routine maintenance, which is essential regardless of other upgrades. Then, consider carefully the incremental enhancements offered by upgraded springs, shocks, and an anti-roll bar. Only then should you explore the complexities of a full independent rear suspension conversion.

By carefully considering these options and prioritizing your goals, you can significantly improve your TR6's rear suspension, resulting in a more enjoyable and rewarding driving experience. Remember to always consult reputable resources and experienced mechanics if you’re unsure about any aspect of the process.