Manley Valve Spring, SPRING-1.500 DOUBLE

Manley Performance has been a go-to name for serious engine builders for decades, known for their well-built internal engine components. This set of double valve springs, part number 221455-16, is designed for high-performance applications where precise valve control is critical. When you're pushing an engine hard, especially at higher RPMs, the valve springs need to be strong enough to close the valves quickly and reliably, preventing valve float which can lead to serious engine damage.

This particular set features a double spring design, meaning there are two springs working together for each valve. This setup offers increased stability and control over the valve train, especially under demanding conditions. The springs are made from high-tensile spring wire, a material chosen for its ability to withstand the constant stress and heat cycles found in performance engines. Each spring is carefully manufactured to ensure consistent tension and fatigue resistance, which is crucial for maintaining proper valve seating and preventing misfires at high engine speeds. The set includes 16 springs, enough for a typical V8 engine.

For builders working on a performance engine, these springs are a solid choice. They are designed to work with Manley's own retainers and valve locks, ensuring a matched system. Always refer to the manufacturer's installation instructions for proper setup and compatibility with your specific cylinder heads and camshaft. Ensuring correct spring installed height and seat pressure is key to achieving optimal performance and reliability from your engine build.