GSC Oversize Size 37mm Intake Valve Set for Subaru EJ20 / EJ25 Turbo
GSC2014-8
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$166.99
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$166.99
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CA WARNING:
Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands. For more information go to
www.P65Warnings.ca.gov/motor-vehicle-parts.
Valve Features:
- +1mm Oversize 37mm intake valves
- Swirl polished heads for smoother air flow over the valve
- Back cut to reduce valve weight for higher rpm, higher boost pressure and allow for more aggressive cam profiles without increasing valve spring seat pressures.
- Valve stems are micropolished to allow for less oil retention on the stem which creates less drag on the stem to guide for a smoother motion.
- Intake valves are a modified 21-4n stainless steel
- Valve tips are either hardened or have a stelite wafer tip fused so that the tip is within 5 Rockwell C of the rocker or valve tappet for extended life and less wear
- Valve tip lengths. GSC took extra time to adjust tip heights on the applications to require less tipping of the valve to maintain proper tip height for proper valve train geometry and to cut down on install times when setting valve lash.
- GSC also adjusted the Keeper grove to properly balance intake spring pressures to reduce the use of valve spring shims and maximize performance from spring and retainer kits.
- Valves will work with an oem keeper/lock or when available, GSC upgrade keeper/lock.
- *It's not mandatory but it is suggested that any valve lock not be reused on performance applications do to material grooving.
Installation Instructions
Installation Instructions
Fitment
Fitment
