Not in stock at our Sanford, FL location but electronically verified in stock at the Manufacturer/Distributor within the last 12 hours. (aka: not experiencing a supply delay)
GSC Intake Valves Subaru EJ205 EJ257 WRX Sti 36mm STD When creating our new valve line we set out to create the best performance longest lasting valves available to the aftermarket. Using advanced 3D design and simulation programs we have created a stronger and higher flowing valve head design. We flow test prototype valve heads in the specific applications to make sure we have the highest flowing valve head available on the market today. With the materials used we have less valve distortion at the face than any of the tested designs. Less distortion allows or better sealing under extreme conditions and more consistent performance threw the life of the valve. GSC Power-Division's new valves are sure to become the industries standard for sport compact performance valves.
Valve Features
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.
Fully nitrated ( this includes the 45 which increases valve life and makes a better seal at the valve seat for improved cylinder pressure) also reduces carbon buildup on the backside of the valve.
Intake valves are a modified 21-4n stainless and Exhausts are a modified 23-8n stainless material for high heat capacity while maintaining longevity.
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. We have taken 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.
We have also adjusted the Keeper grove to properly balance intake and exhaust spring pressures to reduce the use of valve spring shims and maximize performance from our spring and retainer kits.
Valves will work with an oem keeper/lock or when available our 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.
Specifications
More Information
Vendor Name Code Part Number
GSC2012-8
Availability New
In Stock / Available
Barcode
GSC2012-8
Valve Size
36mm (Standard)
Shipping Weight (Dimensional)
1.250000
Clearance Sale
No
Availability
Available
Part Type
Valves
Make
Subaru
Model
STI JDM 01-02 GD, STi 04-07 GD, STi 08-14 GR, STi 15-21 VA, WRX 02-05 GD, WRX 02-05 GG, WRX 06-07 GD, WRX 06-07 GG, WRX 08-14 GR
Engine
EJ205, EJ207, EJ255, EJ257, EJ257B
Brand
GSC Power Division
Stem Diameter
5.96mm
Valve Length
104.4mm
Valve Head Size
Standard
Valve Head Diameter
36mm
Valve Type
Intake
Valve Stem Diameter
5.96mm
Valve Material
Stainless Steel
Valve Finish
Polished
Valve Face
Dish
Carb Legal
Unspecified
Shipping Label
Free Shipping
Reviews
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