Supertech Nissan SR20DET Dual Valve Spring Kit

This dual valve spring kit from Supertech is built for the Nissan SR20DET engine. It uses a unique spring design with a smaller inner spring working in tandem with a larger outer spring. This setup is designed to handle higher RPMs and more aggressive camshaft profiles than stock springs can manage. The springs are made from a high-tensile chrome-silicon wire, which is known for its strength and ability to resist fatigue under extreme conditions. This means they can maintain consistent pressure across a wide temperature range and over many cycles, which is crucial for preventing valve float at high engine speeds.

When you're pushing an SR20DET, especially with upgraded camshafts, the stock valve springs can become a limiting factor. They might not be able to close the valves fast enough, leading to valve float, misfires, and potentially catastrophic engine damage. This Supertech kit addresses that by providing a well-built, dual-spring solution that offers more control over valve motion. The kit includes the necessary springs to replace all the valves in your engine. Proper installation is key to realizing the full benefit of these springs, so ensure you follow the manufacturer's guidelines for setting valve spring installed height and checking for coil bind, especially if you're using aftermarket camshafts.

This kit is a solid option for anyone rebuilding or significantly modifying their SR20DET engine and looking to improve its high-RPM performance and reliability. It's a critical component for building a robust valvetrain that can withstand the demands of performance driving.