What material are these exhaust valves made from?

These Manley Race Master exhaust valves are constructed from XH-426 stainless steel, known for its durability in high-heat engine environments.

Are these valves suitable for high-RPM engines?

Yes, Manley's Race Series valves are engineered for engines operating under 8000 RPM, making them suitable for demanding racing applications.

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

The swirl polished under-head area is designed to help improve airflow into the cylinder, contributing to better combustion efficiency.

Specifications

Brand: Manley Performance
Part #: 11671B-8
UPC: 807298009834

Manley Chrysler Hemi 6.1L 1.625in Race Master B/L Exhaust Valves (Set of 8)

Name: Manley Chrysler Hemi 6.1L 1.625in Race Master B/L Exhaust Valves (Set of 8)
Brand: Manley Performance
SKU: manley-performance-manley-chrysler-hemi-6-1l-1-625in-race-master-b-l-exhaust-val-t14-4338809
Price: 230.31 USD
Availability: BackOrder

$230.31

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Manley Chrysler Hemi 6.1L 1.625in Race Master B/L Exhaust Valves (Set of 8). Stainless steel construction for durability.

Key Features

Fits Chrysler Hemi 6.1L engines.
Set includes 8 exhaust valves.
Each valve has a 1.625 inch diameter.
Constructed from durable XH-426 stainless steel.
Chrome stems and hard tips offer enhanced longevity and wear resistance.
Swirl polished under-head areas and fully machined combustion faces help optimize airflow and combustion efficiency.

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About this part

Product Details

Manley Performance is well-known for making strong engine components, and these Race Master exhaust valves are a prime example. If you're rebuilding a Chrysler Hemi 6.1L engine, especially one that sees regular track use or operates above 8000 RPM, these valves are built to handle the stress.

These exhaust valves are made from XH-426 stainless steel, which is a solid choice for durability under high heat. They also feature chrome-plated stems and hardened tips to resist wear over time, which is important for maintaining a good seal. The under-head area is swirl polished to help improve airflow into the cylinder, and the combustion face is fully machined for better efficiency. Manley recommends these valves for alcohol-fueled engines, so you know they're built to withstand demanding conditions.

This set includes eight valves, and they are the Race Master straight stem style, designed for specific engine builds. Make sure these are the right fit for your cylinder head porting and valve guide setup.