8. ACTUATOR SPRINGS
This product features interchangeable actuator springs, allowing you to set different boost pressures.
Use the following information as reference to choose the appropriate spring(s) for your setup.
CHOOSING ACTUATOR SPRINGS
The table on the next page shows the standalone pressure/spring rate of each spring.
All pressure/spring rates were measured just as the internal wastegate begins to open.
Always ensure you measure and choose the appropriate spring(s) for your particular setup.
For details on how to change actuator springs, please refer to the separate actuator manual.
※ The table on the next page shows the standalone pressure/spring rate of each spring
with 2mm of preload applied.
※ The included actuator ships preconfigured with 1.0kgf/cm
2
springs as shown in the
table on the next page.
※ The table on the next page should be used for reference only as actual boost pressure
will vary depending on the setup.
※ A boost controller should be used in conjunction to accurately adjust boost settings.
For best results, the boost controller should be used as the main boost control device,
with the actuator springs providing a secondary level of adjustment.
HOW TO CHOOSE ACTUATOR SPRINGS (EXAMPLE)
■ Clamp/secure the actuator on a stable surface so that it doesn't move.
■ Next, set up a dial indicator or similar tool so that you can accurately measure
actuator rod travel.
■ Using an air compressor and pressure gauge, apply air pressure to the actuator.
■ Note the pressure at which the actuator rod begins to move.
■ Then, use the following table to choose the appropriate spring(s) for your setup.
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