What material are these Manley exhaust valves made from?

These Manley Race Series exhaust valves are constructed from stainless steel. They also feature chrome-plated stems and hard tips for added durability and wear resistance.

Are these valves suitable for high-performance or racing applications?

Yes, Manley's Race Series valves are engineered for demanding applications, including bracket, drag, and oval track racing, especially for engines operating under 8000 RPM. The stainless steel construction and specialized machining help optimize performance and longevity.

What is the difference between Race Master and Race Flo valve shapes?

The Race Master valves, like this specific exhaust valve, feature a straight stem. The Race Flo shape offers a different profile. You can choose the shape that best suits your specific racing engine's requirements for airflow and combustion.

Specifications

Brand: Manley Performance
Part #: 11147-8
UPC: 807298059969

Manley 91-98 Nissan Sentra SE-R 2.0L (SR20DET) DOHC 16 Exhaust 31.15mm Stainless Race Master Valves

Name: Manley 91-98 Nissan Sentra SE-R 2.0L (SR20DET) DOHC 16 Exhaust 31.15mm Stainless Race Master Valves
Brand: Manley Performance
SKU: manley-performance-manley-91-98-nissan-sentra-se-r-2-0l-sr20det-dohc-16-exhaust--t14-5548
Price: 325.61 USD
Availability: BackOrder

$325.61

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Fits 1989-1998 Nissan 240SX. Manley Race Series stainless steel exhaust valves for improved airflow and durability.

Key Features

Fits 1989-1998 Nissan 240SX.
Includes Manley Race Series exhaust valves.
Constructed from durable stainless steel for longevity.
Features chrome stems and hard tips for enhanced wear resistance.
Swirl-polished under-head areas and fully machined combustion faces help optimize airflow.
Race Master (straight stem) style is suitable for many racing engine requirements.

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

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About this part

Product Details

When you're rebuilding the top end of your 1989-1998 Nissan 240SX, especially if you're pushing the engine past 8000 RPM, you need parts that can handle the stress. This set includes Manley Race Series exhaust valves, specifically designed to meet the demands of racing engines. They're built from stainless steel, which is a strong material that holds up well under high temperatures and pressures.

These aren't just basic valves; they feature chrome-plated stems and hard tips to resist wear over time, helping to ensure a good seal and consistent performance. The under-head areas are swirl-polished to help smooth out airflow, and the combustion faces are fully machined. This attention to detail helps optimize how air and fuel move through the cylinder, contributing to better combustion efficiency. Manley also notes these are a recommended choice for exhaust valves in alcohol-fueled engines, which run hotter and require robust components.

This specific part number is for the exhaust valves, and they are the Race Master (straight stem) style, which is a popular choice for many racing applications. Make sure to check the full fitment details to confirm they're the right match for your engine build.