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EC 32mm Stainless Steel 5mm Valves for Tillotson/Predator Non-Hemi
EC 32mm Stainless Steel Valve with 5mm Stem
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EC 32mm Stainless Steel 5mm Valves for Tillotson/Predator Non-Hemi

Part Number: R-37
Online Price: $20.99
EC 27mm Stainless Steel 5mm Stem Valves for the Predator 212 Non-Hemi, Tillotson 212R and Tillotson 225
Availability: Out of Stock.

Description

EC 5mm Stainless Steel Valves for Tillotson 212R, 225RS, and Predator Non-Hemi Cylinder Heads


The EC 5mm Stainless Steel Valves are a game-changer for high-performance small engines, specifically designed for Tillotson 212R, 225RS, and Predator Non-Hemi cylinder heads. These valves are engineered to overcome the limitations of stock valves by offering enhanced durability, weight reduction, and flow performance.


Originally developed due to the lack of aftermarket 5mm valves for these engines, our stainless steel valves address the need for a stronger valve capable of handling higher RPMs, spring pressures, and taller valve spring install heights. By switching to a 5mm stem, we reduce reciprocating weight, allowing for higher RPM potential and less spring pressure, all while increasing flow potential for better engine performance.


Key Features & Benefits:

  • Precision Design: The 5mm stem reduces valve weight, making it ideal for high-RPM builds, improving valvetrain stability and minimizing spring pressure. A lighter valve allows for higher RPMs with less energy required to open and close the valve.
  • Increased Flow: The 32mm intake valve boosts airflow significantly compared to the stock 27mm intake valves, delivering more fuel and air to the engine for improved combustion and power output. The larger valve diameter requires machining and replacement of the intake seat to fit properly, ensuring an optimized port flow.
  • Enhanced Durability: These valves come with nitrided treatment on both the valve head and stem, providing heat resistance and reducing wear and tear over time. This treatment ensures the valves last longer and maintain optimal performance in demanding high-compression racing conditions.
  • Longer Length for Better Lift: These valves are +0.130” longer than stock valves, offering +0.050” additional valve spring install height. This extra height allows you to run cams with higher lifts without risking coil bind, which improves your engine’s power potential while maintaining proper spring pressure.
  • Weight Savings: With a stem diameter of 5mm, these valves are lighter than the traditional 5.5mm valves, reducing reciprocating mass and improving engine responsiveness


Valve Specs

Head Diameter 1.258”/32mm

Stem Diameter: .1945”/5mm

Overall Length: 2.650

Weight: 27.7g


Non-Hemi Heads with 5mm Guides:

Predator 212 Non-Hemi

Tillotson 212R/225RS

Wildcat WC946

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