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

The swirl-polished under-head area helps to smooth the path for air entering the combustion chamber. This design choice can contribute to improved airflow and overall engine efficiency.

Are these valves suitable for a high-performance engine rebuild?

Yes, these valves are part of Manley's Race Series and are designed for engines operating under 8000 RPM. They feature a Race Flo shape and are fully machined for optimized performance, making them a well-built option for performance builds.

Specifications

Brand: Manley Performance
Part #: 11112-8
UPC: 807298056012

Manley 91-98 Nissan Sentra SE-R 2.0L DOHC 16V 35.15mm Head Dia Race Flo Intake Valve (Set of 8)

Name: Manley 91-98 Nissan Sentra SE-R 2.0L DOHC 16V 35.15mm Head Dia Race Flo Intake Valve (Set of 8)
Brand: Manley Performance
SKU: manley-performance-manley-91-98-nissan-sentra-se-r-2-0l-dohc-16v-35-15mm-head-di-t14-190170
Price: 229.72 USD
Availability: BackOrder

$229.72

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Fits 1991-2002 Infiniti G20. Manley Race Flo intake valves improve airflow with a 35.15mm head diameter.

Key Features

Fits 1991-2002 Infiniti G20, 1995-1998 Nissan 200SX, 1989-1998 Nissan 240SX, 1991-1993 Nissan NX, and 1991-1994 Nissan Sentra.
Features a 35.15mm head diameter for improved airflow.
Constructed from stainless steel for durability and heat resistance.
Chrome-plated stems enhance longevity and wear resistance.
Swirl-polished under-head areas and fully machined combustion faces optimize airflow and efficiency.
Race Flo shape is designed for specific airflow characteristics.

⚠️ 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

These Manley Race Flo intake valves feature a 35.15mm head diameter, designed to optimize airflow into your engine. They are constructed from durable stainless steel, chosen for its strength and resistance to heat, making them a solid option for engines that see regular use or operate under demanding conditions. The stems are chrome-plated for improved wear resistance, and the under-head areas are swirl-polished to help smooth the path for air entering the combustion chamber.

The Race Flo shape is a specific design choice that can help improve airflow characteristics depending on your engine's setup. These valves are fully machined, including the combustion faces, to ensure consistent performance and efficiency. While recommended for alcohol engines as exhaust valves, these intake valves are built to handle the stresses of engines running up to 8000 RPM, making them a well-built choice for performance-oriented builds.

This set includes eight intake valves, enough for a typical four-cylinder engine. They are a direct fit for several Nissan and Infiniti models from the early 90s through the early 2000s, including the Infiniti G20, Nissan Sentra SE-R, 200SX, 240SX, and NX. Ensure you have the correct specifications for your engine rebuild or performance upgrade.