Tomei Racing Valve Springs, A Type Without Retainers for the RB25DET R33 GTS25T, are designed to ensure optimal performance in high-powered engines. These springs are meticulously engineered to deliver precise camshaft movement to the valves at high engine speeds. Tomei, known for its commitment to quality, selects only the best materials, such as oil-tempered chromium-silicone alloy steel wire, for its springs. This alloy is further enhanced through advanced surface treatments, such as nitrogen permeation, which boosts the spring's fatigue limit and durability, especially for high-lift camshaft applications.
The innovative design of these valve springs minimizes issues like resonance and surging, often associated with high RPMs. By incorporating multiple spring rates into one, Tomei has developed a product that not only withstands high engine speeds but also suppresses valve jump and bounce, even at extreme RPM limits. These springs have been rigorously tested for durability, ensuring that they resist sagging and maintain performance under the harsh conditions typical of high-performance engines.
The surface of the springs undergoes a specialized process where small steel balls are shot at high speeds to further enhance the spring’s fatigue limit, ensuring longevity and reliability. This process is crucial for maintaining the integrity of the springs under extreme conditions, such as super-high revs exceeding 10,000 RPM—previously unattainable with high lift camshafts.
At Terra Firma Automotive, we understand the importance of durability and reliability in high-performance applications. That’s why we offer Tomei Racing Valve Springs, a solution that ensures long-term, consistent performance for enthusiasts seeking maximum engine output.
- Comes With Intake Retainers
- NOT compatible with NEO 6
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