What is the main benefit of using dual valve springs?

Dual valve springs help prevent valve float at higher RPMs by providing more consistent pressure. This ensures the valves close reliably, which is critical for engine performance and longevity, especially in modified engines.

What other parts are typically needed when installing these valve springs?

When installing new valve springs, it's common to also replace valve seals and potentially the valve retainers if they are not included in the kit. It's also a good time to inspect the valves and valve guides for wear. Always refer to the manufacturer's installation instructions for a complete list of recommended components.

Can these springs be used with stock camshafts?

While these springs are designed to support performance camshafts with increased lift and duration, they can also be used with stock camshafts. They offer improved reliability and control over stock springs, even in a naturally aspirated setup.

Supertech Mitsubishi 4G63 Dual Valve Spring Kit SPRK-M1007D

Name: Supertech Mitsubishi 4G63 Dual Valve Spring Kit
Brand: Supertech
SKU: supertech-supertech-mitsubishi-4g63-dual-valve-spring-kit-t14-316205
Price: 601.87 USD
Availability: InStock

Supertech Mitsubishi 4G63 Dual Valve Spring Kit

$601.87

Only 3 left in stock

Supertech Mitsubishi 4G63 dual valve spring kit.

Key Features

Fits Mitsubishi 4G63 engines.
Dual spring design for improved valve control.
Constructed from high-strength spring steel.
Includes springs and retainers for a complete kit.
Designed to prevent valve float at high RPMs.
Supports increased valve lift and duration from performance camshafts.

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Product Details

These Supertech dual valve springs are made from a high-strength spring steel, specifically chosen for its ability to handle the stresses of high-performance engine builds. The dual spring design means you get two springs per valve, which helps to prevent valve float at higher RPMs and ensures the valves close reliably. This is crucial for engines like the Mitsubishi 4G63, which are often pushed beyond their stock limits.

When you're rebuilding the top end of a 4G63, especially if you're planning on using a more aggressive camshaft or increasing boost pressure, upgrading your valve springs is a smart move. These springs are designed to handle the increased lift and duration from performance cams, and they provide the necessary seat and open pressures to keep everything in sync. The kit includes the springs and retainers needed for a complete installation, ensuring you have the core components to support your engine's new capabilities. Proper installation is key, so be sure to follow the manufacturer's guidelines for setting valve lash and ensuring correct spring alignment.

This kit is a solid choice for anyone serious about getting the most out of their Mitsubishi 4G63 engine. By upgrading to these dual valve springs, you're adding a layer of reliability and performance that will allow your engine to breathe and rev more freely, especially under demanding conditions. It's a foundational piece for building a robust and responsive engine.