What material are these Manley intake valves made from?

These Manley Race Master intake valves are constructed from NK-842 stainless steel. This material is chosen for its durability and resistance to high temperatures, making it suitable for demanding engine applications.

What is the benefit of the swirl polished under-head area and machined faces?

The swirl polished under-head areas help to smooth the flow of air into the cylinder, which can improve efficiency. The fully machined combustion faces are designed to optimize combustion within the cylinder.

Are these valves suitable for all engine builds?

These Race Master valves are specifically recommended for engines operating under 8000 RPM, and are particularly noted as a good choice for alcohol engines. They are designed for demanding racing applications.

Specifications

Brand: Manley Performance
Part #: 11790-4
UPC: 807298052656

Manley Ford 2300 2.3L inEsslingerin Race Master 1.890 Intake Valves (Set of 4)

Name: Manley Ford 2300 2.3L inEsslingerin Race Master 1.890 Intake Valves (Set of 4)
Brand: Manley Performance
SKU: manley-performance-manley-ford-2300-2-3l-inesslingerin-race-master-1-890-intake--t14-4315757
Price: 109.49 USD
Availability: BackOrder

$109.49

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Manley Ford 2300 2.3L Race Master 1.890" Intake Valves (Set of 4). Stainless steel construction for durability.

Key Features

Fits Manley Ford 2300 2.3L engines.
Set includes four 1.890 inch diameter intake valves.
Constructed from NK-842 stainless steel for durability.
Chrome stems and hard tips are included for improved wear resistance.
Swirl polished under-head areas and fully machined faces optimize airflow and combustion.
Recommended for alcohol engines, ensuring reliable performance.

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About this part

Product Details

These Manley Race Master intake valves are made from NK-842 stainless steel, a material chosen for its strength and resistance to heat. They're built for engines that see a lot of action, especially those running up to 8000 RPM, like you'd find in bracket, drag, or oval track racing applications. The 1.890-inch diameter is specific to certain Ford 2.3L engines, making sure they're the right size for the job.

You'll notice the stems are chromed and the tips are hardened, which helps them stand up to wear and tear over time. The under-head area is swirl polished to help smooth out airflow into the cylinder, and the faces are fully machined to help with combustion efficiency. These are a solid option if you're working on a performance Ford 2.3L build and need reliable valves.