Performance Springs Toyota 1JZ Valve Spring Kit
For shipping cost -add all the products you would like, then navigate to the shopping cart to calculate shipping quote.
Valve Spring Set for Toyota 1JZ Engines
This spring pack is engineered for 1JZ-GTE and 1JZ-GE engines requiring increased spring load to support aftermarket cams or elevated RPM. The spring profile ensures consistent force across the valve lift curve.
Spring Characteristics
- O.D.: 1.085"
- I.D.: 0.780"
- Installed: 85 lbs at 34.8 mm
- Open: 185 lbs at 10 mm lift
- Maximum Valve Lift: 10.5 mm
- Coil Bind: 0.890"
Direct installation using the factory retainers and keepers.
| Product Name | Performance Springs Toyota 1JZ Valve Spring Kit |
|---|---|
| Brands | Performance Springs |
| Engine | 1JZ |
| Make | Toyota |
Delivery & Freight
We are an Australian-based company that ships items nationally and internationally, usually within 48 hours of receiving your order. High-value items shipped internationally are sent via DHL Express, while lower-value items are sent via Australia Post Express unless otherwise instructed.
You can calculate shipping rates inside the shopping cart. After adding all the products you would like, navigate to the cart and click the ESTIMATE SHIPPING & TAX link. .
If you only see the Click and Collect shipping option, it means that your address was not validated correctly.
If you have issues calculating freight, please get in touch. We are happy to help.
Disclaimer:
Product images are for description purposes only. Actual product may vary.
Shipping calculations available at checkout.
If you are unsure, get in touch by emailing [email protected], messaging us on Facebook, or phoning us at +61 7 5645 1333 (8am to 2pm AET).
What information do I need to match these pistons to my engine?
You need the engine code, bore size, stroke, rod length, pin diameter and target compression ratio. These determine the correct piston compression height and crown design.
How should ring gaps be set for these pistons?
Ring gaps must be set by your engine builder based on fuel type, boost level and the intended rpm range. Forced-induction engines usually require larger gaps.
Are forged pistons suitable for street engines?
Yes. Forged pistons handle detonation and high cylinder pressure better than cast units. Your builder should set the piston-to-bore clearance to suit your application.
What is the maximum valve lift supported by the Toyota 1JZ Valve Spring Kit?
The Toyota 1JZ Valve Spring Kit supports up to 10.5mm of valve lift. Ensure that your camshaft specifications are compatible with this lift to maintain optimal performance.
Can I use the stock retainers and locks with this valve spring kit?
Yes, the Toyota 1JZ Valve Spring Kit is designed for a straightforward drop-in installation, allowing you to use the stock retainers and locks without any modifications.
What are the seat and open pressures of the valve springs?
The valve springs have a seat pressure of 85 lbs at 1.370 inches and an open pressure of 185 lbs at 10mm lift. These pressures are crucial for maintaining valve control at higher RPMs.
Is there a specific coil bind height I should be aware of?
Yes, the coil bind height for the Toyota 1JZ Valve Spring Kit is 0.890 inches. It's important to ensure that your setup does not exceed this height to prevent spring failure.
Will these valve springs improve my engine's performance?
The Toyota 1JZ Valve Spring Kit is engineered to enhance performance and reliability, especially at higher RPMs. However, overall performance gains will depend on your entire engine setup, including tuning and other modifications.
