Standard Transmission Gear Flywheels for FW Conversions Product Category Specialty

For automotive enthusiasts and professional builders undertaking flywheel (FW) conversions, particularly for vehicles transitioning from automatic to manual transmissions, the flywheel is a critical interface between the engine and clutch. Our product category specializes in Standard Transmission Gear Flywheels, engineered to deliver flawless performance, exact engagement, and robust durability in high-stress drivetrain applications.

Premium Material and Metallurgical Integrity

Our flywheels are precision-cast from high-grade nodular or ductile iron (e.g., GGG70). This material is chosen for its superior strength-to-weight ratio, excellent thermal stability, and outstanding fatigue resistance. Unlike standard gray iron, nodular iron provides enhanced impact toughness, which is crucial for handling the sudden shock loads and repeated engagement cycles of a performance clutch. The material's inherent resistance to warping under high heat ensures consistent clutch contact and prevents chatter, providing smooth and reliable power transfer from the engine to the transmission input shaft.

Precision-Controlled Production Process

Manufacturing begins with a premium casting process to create a near-net-shape blank with a dense, uniform grain structure. This foundational casting is then subjected to a series of critical machining operations on CNC lathes and milling centers. We achieve exacting tolerances for the friction surface flatness, pilot bearing bore diameter, and crankshaft flange mounting surface. Each flywheel is dynamically balanced to a high standard to eliminate vibrations that can damage engine bearings and cause driveline harmonics, ensuring smooth operation at high RPM. The final step often includes a surface grinding or turning operation to provide the optimal surface finish for the specific type of clutch disc (organic, ceramic, or sintered metallic).

Specialty Application for FW Conversions

This product category is specifically tailored for conversion projects. Our flywheels are engineered to match the original engine's bolt pattern and pilot bearing size while providing the correct thickness and friction surface diameter for the targeted manual transmission and clutch assembly. This ensures proper clutch actuation, starter motor engagement, and overall drivetrain geometry. They are the cornerstone of a successful swap for a wide range of applications, from classic muscle car restorations to modern performance builds, delivering the robust performance and reliability that converters demand.

Choose our specialty flywheels for your next conversion project—the definitive solution for integrating a standard transmission with precision-engineered durability.