What material are these Manley valves made from?

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

What is the purpose of the swirl polished and machined faces?

The swirl polished under head areas and fully machined combustion faces are designed to optimize airflow into the cylinder and improve combustion efficiency for better engine performance.

Are these valves suitable for high-RPM use?

Yes, these Race Series valves are designed for engines operating under 8000 RPM, making them suitable for demanding racing applications.

Specifications

Brand: Manley Performance
Part #: 11628-4
UPC: 807298086118

Manley Porsche 914 2.0L 42mm Head Diameter Triple Groove Race Master Intake Valves (Set of 4)

Name: Manley Porsche 914 2.0L 42mm Head Diameter Triple Groove Race Master Intake Valves (Set of 4)
Brand: Manley Performance
SKU: manley-performance-manley-porsche-914-2-0l-42mm-head-diameter-triple-groove-race-t14-472663
Price: 109.49 USD
Availability: BackOrder

$109.49

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Manley Performance Race Master intake valves for Porsche 914 2.0L. Set of 4, 42mm head diameter, triple groove.

Key Features

Fits Porsche 914 2.0L engines.
Set of 4 Race Master intake valves.
42mm head diameter.
Triple groove design for valve spring retainers.
Constructed from stainless steel for durability.
Chrome stems and hard tips enhance wear resistance.

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About this part

Product Details

Manley Performance is known for making strong engine components for racing applications. These Race Master intake valves are a solid choice for your Porsche 914 2.0L engine, especially if you're rebuilding the top end and looking for improved airflow.

These valves are made from stainless steel, which holds up well over time. They feature chrome stems and hard tips to resist wear, and the under-head area is swirl polished while the combustion face is fully machined. This design helps optimize how air moves into the cylinder and how efficiently the combustion happens. They are designed as a straight stem, or Race Master, type.

This set includes four intake valves, each with a 42mm head diameter and triple grooves for the valve spring retainer. They are recommended for engines running up to 8000 RPM.