Performance Valve Springs for Toyota 1FZ-FE 24V 4.5L Turbo engines
Specifications:
O.D. = 1.180
I.D. = .875
1.455 (37mm) = 100Lbs
0.400 = 190Lbs
Coil Bind = .950
More Information
Product Name
Performance Springs Toyota 1FZ-FE Valve Spring Kit
Brands
Performance Springs
Engine
1FZ-FE
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.
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 recommended application for the Toyota 1FZ-FE Valve Spring Kit?
The Toyota 1FZ-FE Valve Spring Kit is designed specifically for the 1FZ-FE 24V 4.5L turbo engines. It is ideal for both performance upgrades in racing applications and enhancing reliability in daily driving, especially under high-stress conditions.
What are the spring pressures for the 1FZ-FE Valve Spring Kit?
The spring pressure at 1.455 inches (37mm) is 100 lbs, while at 0.400 inches, it is 190 lbs. These pressures ensure optimal valve control, particularly in turbocharged setups.
Is there a specific coil bind height for the valve springs?
Yes, the coil bind height for the Toyota 1FZ-FE Valve Spring Kit is 0.950 inches. It's crucial to ensure that this height is not exceeded during engine operation to prevent spring failure.
What are the outer and inner diameters of the valve springs?
The outer diameter (O.D.) of the valve springs is 1.180 inches, and the inner diameter (I.D.) is 0.875 inches. These dimensions are important for ensuring proper fitment within the cylinder head.
Do I need to modify my cylinder head to install these valve springs?
In most cases, the valve springs should fit the stock cylinder head without modification. However, it's advisable to check for any specific clearance issues or modifications that may be necessary based on your engine's setup.
