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SKU: 5085
GSC P-D 1989-2002 Nissan Skyline GT-R RB26DETT Shimless Conical Valve Spring & Ti Retainer Kit (Max Boost PSI 50)
Upgrade your Nissan Skyline GT-R RB26DETT engine with the GSC P-D shimless conical valve spring and titanium retainer kit designed for 1989-2002 R32 R33 R34 models. This kit handles up to 50 PSI boost and 10500 RPM to prevent valve float in turbocharged setups. It delivers consistent valve control for drag racing track days and street performance.
Key Features
- Shimless Design: Uses stock height buckets for permanent lash settings without shims simplifying maintenance and ensuring repeatability
- Conical Spring Profile: Progressive rate reduces harshness at low RPM and firms up at high RPM for smooth valve action
- Titanium Retainers: 10-degree design cuts valvetrain mass by 30 percent over steel for faster response and less stress
- Pressure Specs: 98 lbs seat at 1.660 inches 220 lbs open at 0.386 inches lift supports 50 PSI boost reliably
- Super Clean Processing: Removes surface imperfections to extend spring life under sustained high boost and RPM
Product Notes
- Kit includes 24 springs 24 titanium retainers and seals for complete RB26DETT cylinder head coverage
- Coil bind height 1.150 inches max valve lift 10.5mm verify clearance before install
- Store in dry conditions to preserve spring coating integrity
Installation Notes
- Professional installation recommended.
- Check valve stem protrusion after spring install and adjust lash to spec 0.22-0.26mm intake 0.26-0.30mm exhaust
- Compatible with OEM RB26DETT valve locks and seats no modifications needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1989-1994 | Nissan | Skyline | GT-R (R32 BNR32 RB26DETT) |
| 1995-1998 | Nissan | Skyline | GT-R (R33 BNR33 RB26DETT) |
| 1999-2002 | Nissan | Skyline | GT-R (R34 BNR34 RB26DETT) |
Why Choose GSC Power-Division?
- Developed with input from GT-R drag teams and time attack drivers
- Made in USA with aerospace-grade materials for boost-heavy RB26 builds
- Backed by dyno testing to 50 PSI and 10500 RPM in real-world applications
Frequently Asked Questions
-
Q: Will this kit fit R34 GT-R V-Spec models?
A: Yes it bolts directly into all RB26DETT heads including V-Spec N1 and standard GT-R variants from 1989-2002 -
Q: What material composition do the springs use?
A: High-tensile chrome-silicon steel with super-clean shot peening and proprietary coating for fatigue resistance -
Q: What support comes with purchase?
A: Includes detailed instructions GSC lifetime defect warranty and US-based tech support for installation questions
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Securely boxed with foam protection
- Weight: 5.8 lbs
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