MANLEY 11147-8 Exhaust Valve Kit Race Series for NISSAN SR20DET Engine

MANLEY 11147-8 Race Series Exhaust Valve Kit for Nissan SR20DET Engine

The MANLEY 11147-8 Exhaust Valve Kit is part of the Race Series line, engineered for high-performance Nissan SR20DET engines. Designed to endure the rigors of bracket, drag, and oval track racing environments operating under 8000 RPM, these valves are built from XH-426 stainless steel for maximum strength, thermal stability, and long-term durability. With chrome-plated stems, hardened tips, and swirl-polished underhead areas, this kit offers consistent performance and exceptional flow—particularly suited for alcohol-fueled racing applications.

• Constructed from premium XH-426 stainless steel for exhaust durability
• Chrome stems and hardened tips improve longevity and wear resistance
• Swirl-polished underhead and fully machined combustion face
• Available in Race Master (straight stem) and Race Flo profiles
• Ideal for alcohol-fueled engines in competitive racing environments

Specifications:

• Product Market: Sport Compact
• Head Diameter: 31.15 mm
• Stem Diameter: 0.274 in / 6.96 mm
• Overall Length: 102.40 mm
• Tip Length: 3.50 mm
• Margin Width: 0.065 in
• Seat Width: 0.080 in
• Top of Head: 9° Dish
• Underhead Angle: 15.00°
• Underhead Radius: 1/2 in
• Valve Series: Race Series
• Valve Type: Exhaust
• Product Type: Engine Exhaust Valve Kit
• Valve Quantity: 8
• Engine Detail: DOHC 16 Valve (Nissan SR20DET)