SKU: 5066
GSC Power-Division High Pressure Conical Valve Spring Kit with Ti Retainers for Toyota 2JZ-GTE & 1JZ-GTE (1990-2005)
GSC Power-Division GSC5066 kit includes 24 conical valve springs and 24 titanium retainers for Toyota 2JZ-GTE and 1JZ-GTE engines in Supra Aristo Chaser Mark II Cresta and Soarer models. Engineered for race applications this setup provides valvetrain stability up to 10000 RPM and 60 PSI boost. Conical design reduces harmonics through varying coil diameter and spacing for less component stress and extended durability under high boost and aggressive cams.
Key Features
- Conical Spring Design: Acts as natural harmonic damper minimizing valvetrain shock transfer for smoother high RPM operation
- Seat Pressure: 105 lbs at 1.316 inches for 2JZ 117 lbs at 1.278 inches for 1JZ ensuring reliable sealing
- Open Pressure: 253 lbs at 0.869 inches for 2JZ 250 lbs at 0.873 inches for 1JZ supporting 11.35mm lift
- Build Quality: Super finished surface and patented multi-step heat treatment for reliability in extreme conditions
- Performance Specs: Coil bind at 0.818 inches max valve lift 0.447 inches 2JZ 0.405 inches 1JZ max RPM 10000 max boost 60 PSI
Product Notes
- Race only application not for street use
- Verify valve spring install heights with GSC calculator before installation
- Kit contains 24 springs and 24 Ti retainers for complete cylinder head set
Installation Notes
- Professional installation recommended.
- Set install height to 1.316 inches for 2JZ-GTE 1.278 inches for 1JZ-GTE
- Compatible with stock valve retainers and keepers no additional hardware needed
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1993-1998 | Toyota | Supra | JZA80 2JZ-GTE |
| 1991-2004 | Toyota | Aristo | JZS147 2JZ-GTE |
| 1990-1996 | Toyota | Chaser | JZX90 Tourer V 1JZ-GTE |
| 1996-2001 | Toyota | Chaser | JZX100 Tourer V 1JZ-GTE |
| 1990-2004 | Toyota | Mark II | JZX90 JZX100 Tourer V 1JZ-GTE |
| 1991-2000 | Toyota | Cresta | JZX90 JZX100 Tourer V 1JZ-GTE |
| 1991-1995 | Lexus | Soarer | JZZ30 1JZ-GTE |
Why Choose GSC Power-Division?
- Racing developed for real world high boost and RPM demands
- Conical springs proven to cut valvetrain wear in modified engines
- Precision engineered with Ti retainers for lightweight strength
Frequently Asked Questions
- Q: Will GSC5066 fit my MK4 Supra 2JZ-GTE?
A: Yes fits 1993-1998 Toyota Supra JZA80 2JZ-GTE with specified install height of 1.316 inches - Q: What materials are used in the springs and retainers?
A: High strength steel springs with super finish and heat treatment paired with lightweight titanium retainers - Q: What is the warranty on this valve spring kit?
A: GSC offers limited lifetime warranty against spring failure when installed and used per specifications
Shipping & Handling
- Method: UPS Ground or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Secure GSC box 12 x 8 x 6 inches
- Weight: 4.8 lbs
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