GSC Power-Division Stainless Steel Exhaust Valves 32mm - Subaru Models (inc. 2002-2014 WRX / 2004+ STI)
Manufacturer Part # 2011-8
RallySport Direct is proud to carry the GSC Power-Division 32mm Stainless Steel Exhaust Valves.
When creating their new valve line they set out to create the best performance longest lasting valves available to the aftermarket. Using advanced 3D design and simulation programs they have created a stronger and higher flowing valve head design. They flow test prototype valve heads in the specific applications to make sure they have the highest flowing valve head available on the market today. With the materials used they 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.
•Swirl polished heads for smoother airflow 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 micro-polished 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. They 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 valvetrain geometry and to cut down on install times when setting valve lash.
•They 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 their spring and retainer kits.
•Valves will work with an OEM keeper/lock or when available their upgraded keeper/lock. It's not mandatory but it is suggested that any valve lock not be reused on performance applications due to material grooving.
RallySport Guarantee - 30 Days
Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.
RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.
The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
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longer than oem valve
MikeA 5 months ago
I'm down 12,000miles with is valves and still holding .. first impression made with very high quality standard .. down side like other reviews depending on your valve seat they can be longer than oem valve even with the smallest valve shims they are still longer ..you will have to grained down to size the valve steam . because of this i'll give it 2 stars for installation .. but over all I love this valve.
QUESTIONS & ANSWERS
Q: fitment and modifications e chavez 3 months agoAnswer
Can someone tell what retainers and locks do I need for these to work? and if i need to upgrade anything else ? thanks
A: OEM style retainers and locks will work just fine with these valves.
Luis L. 3 months ago
Q: contents MrRyan 11 months agoAnswer
Do these valves come with the keepers or valve locks?
A: These do not come with either. you would want to buy valve keepers/valve locks separate.
Luis L. 11 months ago