GSC Intake Valves 36mm Standard - Set of 8 (Subaru EJ20 / EJ257 Turbo) GSC2012-8

GSC Power-Division Intake Valve Set, 36mm (Subaru EJ20 / EJ257 Turbo) - GSC2012-8

For a complete cylinder head build or valvetrain refresh on your Subaru EJ series turbo engine, the GSC Power-Division Intake Valve Set offers the ultimate solution. This set of eight high-performance valves is meticulously engineered to provide superior airflow and durability. Using cutting-edge 3D design and simulation, GSC has created a stronger, higher-flowing valve head that outperforms standard designs. Each valve is individually flow-tested to guarantee the best performance possible. The advanced materials and design lead to minimal valve face distortion under extreme conditions, ensuring a better seal and consistent power output throughout the engine's lifespan.

Key Performance Features

• Complete Set of 8: This comprehensive kit includes eight intake valves, providing a full set for your entire cylinder head.
• Swirl Polished Heads: Precision polishing enhances airflow and optimizes efficiency, contributing to improved engine performance.
• Back-Cut Design: Reduces valve weight, a critical factor for high-RPM and high-boost applications, allowing for more aggressive camshaft profiles without increasing valve spring seat pressures.
• Micro-Polished Stems: The valve stems feature a micro-polished finish to reduce oil retention and friction, ensuring a smoother motion within the valve guide for extended longevity.
• Advanced 21-4N Stainless Material: Constructed from a modified stainless alloy specifically chosen for intake valves, offering exceptional durability and performance.
• Hardened Tips: Tips are hardened or feature a stellite wafer for maximum resistance to wear from the rocker or tappet, extending valvetrain life.

Installation & Fitment

The GSC2012-8 valve set is a direct fit for Subaru EJ20 and EJ257 turbo engines. GSC has fine-tuned the valve tip lengths to ensure proper valvetrain geometry and reduce installation time by minimizing the need for extensive valve tipping during lash adjustments. The keeper groove has been adjusted to balance spring pressures, maximizing performance when used with GSC's spring and retainer kits. These valves are compatible with both OEM and upgraded keepers/locks. For any performance application, it is highly recommended to use new valve locks to avoid issues with material grooving.