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SKU: 3032.003-1
GSC P-D Toyota 2JZ/1JZ Manganese Bronze Intake Valve Guide +.003in Oversize OD - Single 1990-2005
GSC Power-Division manganese bronze intake valve guide with +0.003 inch oversize outer diameter fits Toyota 1JZ-GTE and 2JZ-GTE DOHC 24-valve engines in Supra Aristo Chaser and Mark II models. This single guide restores precise valve stem alignment in rebuilt cylinder heads handling high RPM and boost levels. It reduces oil consumption and wear for reliable power delivery in performance applications.
Key Features
- Manganese Bronze Material: Provides high strength corrosion resistance and longevity under extreme heat and pressure in turbocharged setups.
- +0.003in Oversize OD: OD measures 0.396in for secure installation in machined valve seats preventing guide movement and ensuring tight seal.
- Precision Specifications: ID 0.259in length 1.378in engineered for 6.6mm valve stems in 1JZ 2JZ intake ports.
- Intake Valve Design: Optimized flow characteristics support larger valves and aggressive cams without compromising stability.
- Single Guide Format: Allows custom replacement of individual worn guides during head refresh or full valvetrain upgrade.
Product Notes
- Intended for professional engine builders reconditioning cylinder heads with oversized seats.
- Pair with GSC intake valves for complete valvetrain compatibility and peak performance.
- Packaged securely to prevent damage during transit.
Installation Notes
- Professional installation recommended.
- Cylinder head valve guide area requires precise reaming to +0.003in using dedicated 10.05mm reamer.
- Compatible with OEM or aftermarket valve seats and GSC Power-Division valvetrain components.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1993-2002 | Toyota | Supra | JZA80 2JZ-GTE |
| 1991-2004 | Toyota | Aristo | JZS147 2JZ-GTE |
| 1989-2001 | Toyota | Chaser | JZX81 JZX90 JZX100 1JZ-GTE 2JZ-GTE |
| 1989-2001 | Toyota | Mark II | JZX81 JZX90 JZX100 1JZ-GTE 2JZ-GTE |
| 1989-2001 | Toyota | Cresta | JZX81 JZX90 JZX100 1JZ-GTE 2JZ-GTE |
| 1995-2000 | Toyota | Soarer | JZZ30 1JZ-GTE |
Why Choose GSC?
- Proven in drag racing and time attack with 1000hp 2JZ builds worldwide.
- CNC machined from premium alloys exceeding OEM standards.
- Exact tolerances support valve-to-guide clearances for high revving reliability.
Frequently Asked Questions
-
Q: Will this fit 2JZ-GE non-turbo engines?
A: Yes fits all DOHC 24v 1JZ and 2JZ variants including GE GTE with matching valve size head machining required for oversize. -
Q: What material properties make manganese bronze suitable?
A: Manganese bronze resists galling wear and embeds particles better than cast iron while maintaining dimensional stability at high temperatures. -
Q: Is there a warranty on this valve guide?
A: GSC offers manufacturer defect warranty contact support with installation details for claims.
Shipping & Handling
- Method: UPS Ground or USPS Priority
- Availability: In stock - ships same or next business day
- Packaging: Protective padded envelope 4x4x1 inches
- Weight: 0.05 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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