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SKU: 2148-12
GSC P-D Nissan RB26DETT 35.65mm Head +1mm OS 103.8mm Long +1.5mm Tip Intake Valve - Set of 12 for 1989-2002 Skyline GT-R
Equip your Nissan RB26DETT engine with this complete set of 12 intake valves from GSC Power-Division designed for Skyline GT-R R32 R33 and R34 models. The +1mm oversize 35.65mm head diameter and 103.8mm extended length with +1.5mm tip enhance airflow and valve sealing for higher power output in turbocharged setups. Ideal for cylinder head rebuilds demanding reliability under extreme boost and RPM.
Key Features
- +1mm Oversize Head: 35.65mm diameter increases intake flow capacity over stock for noticeable power gains in modified RB26DETT engines
- Extended Length Design: 103.8mm overall length with +1.5mm tip improves valve train geometry and sealing precision
- Inconel 751 Material: Heat treated aerospace grade alloy withstands high exhaust gas temperatures and boost pressures without fatigue
- One-Piece Forged Construction: Provides unmatched strength to handle 9000+ RPM valvetrain demands in racing applications
- Precision Finishing: Swirl polished stems and bead blasted heads reduce friction wear and promote oil film retention for longer service life
Product Notes
- Full set of 12 valves covers all intake positions on RB26DETT twin-turbo V6
- Pair with GSC valve springs retainers and seats for complete valvetrain upgrade
- Special order item expect 3-7 business day lead time from manufacturer
Installation Notes
- Professional installation recommended.
- Machine valve seats and guides to accommodate +1mm oversize head diameter
- Compatible with OEM or aftermarket RB26DETT cylinder heads and keepers
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1989-1994 | Nissan | Skyline | GT-R (R32 RB26DETT) |
| 1995-1998 | Nissan | Skyline | GT-R (R33 RB26DETT) |
| 1999-2002 | Nissan | Skyline | GT-R (R34 RB26DETT) |
Why Choose GSC Power-Division?
- Proven in GT-R drag racing and circuit competition worldwide
- Valvetrain components built for 1000+ whp RB26 builds
- Engineered and tested in USA with focus on import performance durability
Frequently Asked Questions
-
Q: Do these fit stock RB26DETT cylinder heads?
A: Yes with valve seat machining for the +1mm oversize head. Guides may need minor adjustment for perfect fit. -
Q: What material and heat treatment do these valves use?
A: Forged from Inconel 751 with stress relief and heat treatment for resistance to high heat and stem stretch. -
Q: What warranty coverage applies?
A: GSC provides limited lifetime warranty against manufacturing defects when installed by certified shop.
Shipping & Handling
- Method: UPS Ground
- Availability: Special order ships in 3-7 business days
- Packaging: Protective foam-lined box 12in x 8in x 6in
- Weight: 3.2 lbs
GSC Power Division
GSC Power Division is a manufacturer of precision-engineered camshafts, valve springs, and valvetrain components designed for high-performance and competition engines across domestic, import, and diesel platforms. Founded by engineers with deep roots in motorsport, GSC Power Division components are machined to exacting tolerances and heat-treated to survive the demands of forced induction and high-rpm applications that destroy stock valvetrain parts. The brand is particularly well-known in the Mitsubishi Evo, Subaru STI, Nissan RB, and Toyota 2JZ communities where aggressive camshaft profiles are essential for extracting maximum power from turbocharged four-cylinder and six-cylinder engines. Whether building for drag racing, road course competition, or a high-powered street car, GSC Power Division camshafts and valve springs are a proven upgrade path. Popular Upgrades GSC Power Division S1, S2, and S3 camshafts are the most popular selections, with each profile offering progressivel...
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