Tomei Type A Valve Spring Set fits Nissan Skyline GTR & Stagea 260RS (RB26DETT)173001
At TOMEI, after researching the design concept and production technology including materials and surface treatment, we manufacture a number of prototypes, repeat rigorous tests to thoroughly control quality, and valves that can respond to each situation. We have a lineup of springs. High-speed, high-power tuning engines require highly accurate, calculated valve springs that reliably convey the cam profile to the valve.
Description
High-quality designed springs are required to transfer the exact movement of the camshaft to the valves at high engine speeds on high-performance engines.
The TOMEI products are always engineered with precision in mind to suit the user’s needs. So with this in mind, careful choices in material selection are made with surface coating and other technologies. Then the pre-production products are put through an extensive testing program for checking durability, quality, and performance. We spend time and money to help you save your valuable time and money.
PRODUCT INFO
| APPLICATION | TYPE | COMPATIBLE LIFT(mm) | P/N | ||
|---|---|---|---|---|---|
| RB26DETT | A | ~10.85 | 173001 |
FEATURE / SPEC
| DIA METER | FREE LENGTH(mm) | SET LENGTH(mm) | LIFT LENGTH(mm) | COMPRESSED LENGTH(mm) | SET LOAD(kgf) | LIFT LOAD(kgf) | MATERIAL | PROCESS | COLOR ID | |
|---|---|---|---|---|---|---|---|---|---|---|
| A TYPE | Φ3.90 | 44.0 | 37.7 | 27.2 | 26.1 | 24.0±7% | 77.2±7% | SWOSC-VX | Nitride | White |
■ Multi Coil Unequal Pitch Springs
By combining several steps of spring rates into one spring, and vibration frequency becomes amazingly high. This greatly minimizes resonance and the chances of surging.
■ Oil Tempered Chromium-silicone Alloy Steel Core(SWOCN-V)
Oil-tempered chromium-silicone alloy steel wire is used, which is considered to be the best material for springs for performance applications, and evolved it even further.
Combined with a new optimized design, not only did we make it tougher, but we also succeeded in suppressing valve jumps or bounce even when raising the engine's speed RPM limit.
■ Shot Peening
A process that strikes many small steel balls onto the surface of the spring at high speeds is used to enhance the surface of the spring to raise its fatigue limit. Although it has been carried out earlier during the manufacturing process.
■ Warm Setting
The process that is adding higher loads beyond the actual limits to the highly heated spring. This will modify its shape and keep it permanently fixed. We succeeded in securing the highest performance over a long period of time while preventing sagging.
■ Nitriding
The surface treatment method for making nitrogen permeate the spring gives it a large surface compression repulsion. This method was chosen to raise the fatigue limit to suit the demands of running high-lift camshafts. The dangers of spring failure is greatly reduced with the 1.5 times increase in the springs fatigue limit with the combined use of oil-tempered chromium-silicone alloy steel wire and Nitriding. This is how our valve springs are suitable for use on extreme engine speed conditions of super-high revs exceeding 10,000 RPM, which had not been previously possible with high lift camshafts.
Vehicle Compatibility:
- Nissan R32 Skyline GTR RB26DETT
- Nissan R33 Skyline GTR RB26DETT
- Nissan R34 Skyline GTR RB26DETT
- Nissan C34 Stagea 260RS RB26DETT
Specifications
SKU 173001
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