GSC Power-Division Conical Spring set with Titanium Retainer and Chromoly Seat for the Porsche 991/992 Turbo
GSC Power-Division High Reving Lightweight 991/2 3.8L Turbo Conical valve spring kit.
Check your valve spring install heights here
Warning:
This product can expose you to chemicals including Nickel (Metallic), which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.
More information on California Proposion 65 can be found on Proposion 65 Warnings and OEHHA websites.
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| GSC5094 Conical Valve Spring Kit with Ti Retainer for Porsche 991/2 Turbo | |||||
| Setup | Coil Bind mm/(in) | Install Height mm/(in) | Seat Pressure (lbs) | Open Pressure, 11.5mm Lift | Maximum Valve Lift mm(in) |
| Intake Conical | 20mm/.787" | 33mm/1.3" | 110 | 272lbs @ 21.49mm/ .846" | 11.5mm/0.453" |
| Exhaust Conical | 20mm/.787" | 33mm/1.3" | 142 | 292lbs @ 21.49mm/ .846" | 11.5mm/0.453" |
- Max RPM OEM Profile: 10,500 RPM
- Max Boost: 60psi
- Designed to use factory keepers
Valvetrain Mass Reduction
Intake: -19.1g
Exhaust: -19.0g
The GSC Power-Division Conical Valve Spring Kit with Ti Retainer for the Porsche 991/992 Turbo 3.8 includes (24) titanium retainers, (24) Superfinished Conical light weight Springs, and (24) Chromolly Spring seats.
True conical valve springs are not a new concept and are industry proven to provide several key advantages over traditional spring designs. A major advantage of conical springs vs. traditional cylindrical or beehive springs is the damping and removal of valvetrain harmonics. Of the three designs, conical springs are the front runners in valvetrain harmonic stability. Utilizing a varying coil diameter as well as coil spacing, a conical spring acts as a natural harmonic damper in the transfer of valvetrain shock. This translates to less stress, less wear, and a longer life of the included components. This level of protection is needed in today’s engines being pushed to their physical and mechanical limits. Every GSC conical spring offers a super finished surface treatment to go along with the patented, multi-step heat treatment process. The finished product is an extremely reliable, high-performance spring allowing the users to push higher RPMs, use more aggressive cam profiles.
