The Atomic timing chains for the Ford Barra DOHC 6-cylinder engines are an excellent upgrade for those seeking enhanced reliability and performance, especially when using heavier than standard valve springs. Here is a detailed overview of the features and components included in this heavy-duty timing drive kit:

Key Features:

1. Strength and Durability: The Atomic timing chains are more than 80% stronger than the stock chains. This strength is achieved through features like pre-stretching at the factory, rollerised trunnions, and extra thick link plates.
2. Compatibility: These chains are designed to fit both standard and aftermarket sprockets, making them versatile for various applications.
3. Ease of Installation: The OE style timing links facilitate straightforward timing adjustments, ensuring the installation process is user-friendly.
4. Included Components:
   • Heavy-duty timing chain.
   • Three timing chain guides, including a billet driver’s side guide.
   • CHMO timing pivot bolt.

Required Modifications:

• Timing Cover Modification: A slight modification to the timing cover is required to provide clearance for the bolt. Detailed instructions should be referred to ensure proper adjustment and installation.

Additional Guide Features:

• Heavy-Duty Guide Pivots: To complement the robust timing chain, the kit includes CNC machined guide pivots made from 4140 chrome moly steel. These pivots are specifically designed to address the failure-prone nature of the original equipment (OE) guide pivots.
• Enhanced Design:
  • Larger Fillet Radii: The guide pivots feature larger fillet radii in the corners, which helps to improve strength and reduce stress concentrations.
  • Larger Locking Nut: An M8 locking nut (33% larger than the OE M6 nut) is used for more secure retention of the guide.
  • Heat Treatment: The pivots are heat treated to a hardness of 55 HRC, enhancing their wear resistance and longevity.
  • Black Oxidation: The black oxidised finish provides a clean appearance and additional protection against corrosion.

Considerations:

• Components Not Included: Note that this kit does not include a tensioner, sprocket, or gaskets/seals. These items must be sourced separately for a complete installation.

Conclusion:

The Atomic heavy-duty timing drive kit is a comprehensive solution for those looking to upgrade their Ford Barra DOHC 6-cylinder engine’s timing components. The significant enhancements in strength and reliability make this kit ideal for high-performance applications, particularly when paired with heavier valve springs. The robust construction and thoughtful design of the timing chain and guides ensure improved performance and longevity of the valvetrain system