What is the purpose of a dual valve spring with a damper?

A dual valve spring setup provides more force to close the valves, helping to prevent valve float at higher engine speeds. The damper helps to control oscillations within the spring, further improving valve control and reliability.

What are the specific dimensions of this Ferrea valve spring?

The spring has an overall diameter range of 1.225 to 1.570 inches. The outer spring measures 1.04 inches in OD and 0.74 inches in ID, while the inner spring is 1.56 inches in OD and 1.145 inches in ID.

Is this valve spring suitable for stock engines?

This dual valve spring with a damper is typically used in performance or modified engine builds where higher RPMs or more aggressive camshafts are involved. For stock applications, a single spring might be sufficient.

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Specifications

Brand: Ferrea
Part #: S11012-1

Ferrea 1.225in to 1.570in Dia 1.04/1.56 OD 0.74/1.145 ID Dual w/Damper Valve Spring- Sngl (D/S Only)

Name: Ferrea 1.225in to 1.570in Dia 1.04/1.56 OD 0.74/1.145 ID Dual w/Damper Valve Spring- Sngl (D/S Only)
Brand: Ferrea
SKU: ferrea-ferrea-1-225in-to-1-570in-dia-1-04-1-56-od-0-74-1-145-id-dual-w-damper-va-t14-419214
Price: 55.56 USD
Availability: BackOrder

$55.56

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Ferrea dual valve spring, part number S11012-1. Designed for performance engine builds.

Key Features

Ferrea dual valve spring, part number S11012-1.
Dual spring design with a damper to control valve float.
Outer spring OD: 1.04 inches, ID: 0.74 inches.
Inner spring OD: 1.56 inches, ID: 1.145 inches.
Spring diameter range: 1.225 inches to 1.570 inches.

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About this part

Product Details

Ferrea is known for making high-performance engine components, and this dual valve spring is no exception. This spring is designed for engine builds where improved valve control is needed, especially at higher RPMs. It features a dual spring setup with a damper, which helps control valve float and ensures the valves close properly under demanding conditions.

The spring has a specific range of diameters, measuring from 1.225 inches to 1.570 inches. The outer spring has an outside diameter of 1.04 inches and an inside diameter of 0.74 inches, while the inner spring measures 1.56 inches in outside diameter and 1.145 inches in inside diameter. This dual-wound design with a damper is a popular choice for tuners looking to get the most out of their engine's valvetrain.