What material are these Manley intake valves made from?

These Manley Race Master intake valves are constructed from high-quality stainless steel. They also feature chrome stems and hard tips for added durability and wear resistance.

Are these valves suitable for a street-driven GT-R, or only for racing?

While designed for demanding race applications, the durable stainless steel construction and optimized airflow design can also benefit a high-output street-driven GT-R. They are a well-built component for any VR38DETT engine build.

What is the difference between Race Master and Race Flo valves?

The Race Master valves have a straight stem design, which is a popular choice for many engine builds. The Race Flo option offers a different shape, potentially suited for specific engine configurations or airflow requirements.

Specifications

Brand: Manley Performance
Part #: 11190-12
UPC: 807298074221

Manley Nissan GT-R 3.8L (VR38DETT) DOHC 37.15mm Race Master Intake Valves (Set of 24)

Name: Manley Nissan GT-R 3.8L (VR38DETT) DOHC 37.15mm Race Master Intake Valves (Set of 24)
Brand: Manley Performance
SKU: manley-performance-manley-nissan-gt-r-3-8l-vr38dett-dohc-37-15mm-race-master-int-t14-250574
Price: 488.42 USD
Availability: BackOrder

$488.42

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Fits 2009-2014 Nissan GT-R. Manley 37.15mm Race Master intake valves improve airflow for demanding engine builds.

Key Features

Fits 2009-2014 Nissan GT-R.
Intake valves feature a 37.15mm diameter.
Constructed from durable stainless steel for longevity.
Chrome stems and hard tips enhance wear resistance and lifespan.
Swirl polished under head areas and fully machined faces optimize airflow.
Race Master (straight stem) design is suitable for many racing applications.

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About this part

Product Details

Starting with a 37.15mm intake valve diameter, these Manley Race Master valves are built for the 3.8L VR38DETT engine found in the 2009-2014 Nissan GT-R. They are constructed from high-quality stainless steel, offering solid durability for engines that see regular track use or operate above 8000 RPM. The chrome stems and hard tips are there to help them last longer and resist wear, especially important in high-performance applications.

Manley also fully machines the combustion faces and swirl polishes the under-head areas. This design work helps optimize airflow into the cylinders and can contribute to better combustion efficiency. These are the Race Master, straight-stem version, which is a popular choice for many engine builds. They are also recommended for use in alcohol-fueled engines, which can be particularly demanding on exhaust valve components.

If you're rebuilding the top end of your GT-R's engine, especially for racing or high-output street use, these valves are a well-built option to consider. They are sold as a set of 24, covering all intake valves for the VR38DETT.