BUILT 4G63 Valves

BUILT 4G63 Valves
Our price: $100.00
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Black Nitride Series valves are forged in one piece using a two step forging process from only the highest grade EV-8 stainless steel alloy, the valve is then precision machined to tolerance using the most advanced CNC equipment available. A special aging process is employed and a solution style heat treat process is used to maintain a consistent grain flow in the valves material, extensive flo testing is been conducted in designing the valves profile and achieve optimum flo efficiency for unsurpassed ductility, longevity, reliability and of course performance.

Remember, black nitride is "NOT" a coating, it is a process that is done to achieve higher tensile strengths as well as higher surface hardness, another benefit is better surface porosity for enhanced lubricity.

Spring and retainer:

Mitsubishi = 85 lbs 34MM / 235 lbs 11MM Lift

(Chrome Silicone Vanadium Valve Springs) precision wound springs using only the purest chrome silicone wire available this material is also partially blended with vanadium for higher rigidity, this vanadium blend is similar to tool steel but eliminates the possibilities of brittleness that tool steel can present. Valve springs are finished with a surface micro polish to ensure a smooth substrate and eliminate any possibilities of stress risers, our dual springs are also interference fit to dampen high frequency vibrations (harmonics) at high RPM.
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