Racing Engine Valves
Supertech Racing Engine Valves are engineered for high RPM stability, durability under extreme heat, and precise airflow control. Whether you are building a boosted street car, a road-race endurance engine, or a dedicated drag application, our materials, profiles, and surface finishes deliver proven gains in reliability and performance.
Key Benefits
Why Choose Supertech Valves
- Optimized head profiles and Superfinished stems surfaces reduces friction.
- Unmatched overall dimentional tolerances, ensures consitency, and perfection.
- Multi stage heat treatments and stress relieving, improved longevity.
- Materials, for any build desired ( Stainless steel, Inconel, Sodium filled, Titanium)
- Proven in professional motorsport and demanding street builds.
Build for Your Use Case
- Stainless Intake with Black Nitride for reduced friction and wear.
- Inconel/Superalloy Exhaust for extreme temperature resistant.
- Titanium Options (select platforms) for ultra-low mass and faster acceleration.
- Undercut stems and back-cut heads where flow gains are validated.
- OE-diameter and +Oversize selections for ported heads.
Materials & Surface Finishes
Stainless Steel
High-grade stainless (e.g., 21-4N/EV8) with Superfinished stems.
- Black Nitride treatment.
- One Piece forged valve (non Magnetic)
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Inconel / Superalloy
For forced induction engines, and High EGTs
- High temperature alloy, prevents valve warppage
- harden tips, swirl polish
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Titanium (Select)
Ultra-light, high-strength valves to reduce valvetrain mass.
- CrN Nitride
- Profesional use
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Surface Treatments
- Black Nitride - lowers friction and improves wear.
- CrN / PVD - best used with most guides, and seats
- Swirl-Polish & Back-Cut - increased flow rates
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Geometry & Options
- OE, +1mm, +2mm (varies by platform).
- Flat, dished
- Undercut vs. straight stems
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Quality & Tolerances
- Precision stem roundness and surface finish.
- Concentricity and seat-face accuracy.
- 100% inspected critical dimensions.
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Fitment & Shopping Help
Choosing Valve Size
Stay at OE diameter for stock ports and pump-gas builds. Use +oversize with ported heads and when airflow testing shows a measurable gain. Always verify piston-to-valve and seat throat dimensions.
Street vs. Track Use
Street/NA: stainless intake + stainless exhaust. Forced Induction / Track : consider inconel exhaust and a matched spring/retainer set to control valve motion at elevated RPM and EGT.
Recommended Complements
- Supertech valve springs and retainers matched to your cam.
- Precision valve guides for longevity.
- New stem seals and proper machine work for best results.
Installation Notes
- Measure guide ID and hone to spec; set correct stem-to-guide clearance by material.
- Cut seats with proper angles and concentricity; verify contact width and placement.
- Check installed height, spring pressure, coil bind, and retainer-to-seal clearance.
- Verify piston-to-valve clearance at intended lift and cam timing.
- Follow appropriate break-in and re-torque procedures per platform.
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