GSC P-D Chrome Polished Exhaust Valve 32mm Head (STD) WRX / STI Subaru – Import Image Racing
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GSC P-D Chrome Polished Exhaust Valve 32mm Head (STD) WRX / STI Subaru EJ Series 2002-2021 (Set 8)

GSC P-D Chrome Polished Exhaust Valve 32mm Head (STD) WRX / STI Subaru EJ Series 2002-2021 (Set 8)

Rated 5.0 out of 5
Based on 4 reviews
SKU: gsc2011-8
Availability: 87 In Stock
Product Type: Intake and Exhaust Valves
$146.70
$172.59
$146.70
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Part #: 2011-8

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.

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average rating 5.0 out of 5
Based on 4 reviews
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Review posted
Reviewed by Ian, from United States
Rated 5 out of 5

Nice valves

This is the same review I gave the Intakes but wanted to leave it here also.

"My machinist was very pleased with the quality of the valves and they were almost all had nice contact surfaces. He did have to turn a few to correct them. But he said it is very common now days on almost all valves so I would recommend checking the contact surface with the valve seat and have a machinist correct them if they are not perfect. This will make the lapping go much better."

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Reviewed by Mike D., from United States
Rated 5 out of 5

Great upgrade

A must when building your motor. Great price n part.

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Reviewed by Colton, from United States
Rated 5 out of 5

Best bargain

When building my ej205 stroker, I decided to go with these valves for a couple of reasons reputation, value, price, material, and attention to detail.

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Reviewed by Sean C., from United States
Rated 5 out of 5

Got valve float?

Perfect upgrade for those upgrading their cams, the sirwl polish on these are sexy!!!

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