GSC Power Division Exhaust Valve Guides

2009–2011 Nissan GT-R (R35) 5.6L V8 VK56 Engine

Part #: 3047.001-1

Overview

The GSC Power Division Exhaust Valve Guides are precision-engineered components designed specifically for high-performance Nissan VK56 engines, including the Nissan GT-R models produced between 2009 and 2011. These valve guides are crafted from high-quality manganese bronze, offering excellent durability and heat resistance essential for demanding driving conditions. Whether you're building a race-ready engine or enhancing your vehicle's reliability during spirited driving, these guides provide a reliable solution for maintaining optimal valve operation.

Designed for enthusiasts who seek to maximize engine longevity and performance, these guides help ensure proper valve alignment, reduce wear, and maintain proper valve stem clearance. Their oversize OD (+.001 inch) allows for precise fitment and can be used in applications requiring a slight bore increase, making them suitable for engine rebuilds or upgrades where precision is critical. With these guides, you'll support your engine's ability to handle increased power and higher operating temperatures, ensuring consistent performance over time.

Key Features

GSC Power Division's Exhaust Valve Guides are built with the following features to meet the demands of high-performance applications:

• Constructed from high-grade manganese bronze, offering superior wear resistance and thermal stability compared to OEM guides.
• Total length of 1.534 inches (38.96 mm) ensures proper valve stem support and alignment within the cylinder head.
• Outer diameter of 0.3948 inches (10.03 mm) with an oversize bore of +.001 inch, providing a precise fit for rebuilds or bore enlargements.
• Designed specifically for Nissan VK56 engines, including the 2009-2011 Nissan GT-R models, ensuring perfect compatibility and fitment.
• Manufactured to strict quality standards, backed by GSC Power Division's reputation for performance engine components.
• Ideal for engine rebuilds, performance upgrades, or restoring engine reliability in high-stress environments.
• Easy to install with proper tools and techniques, ensuring a secure fit and long-lasting performance.
• Backed by a manufacturer standard warranty for peace of mind and quality assurance.

Construction & Design

The GSC Power Division Exhaust Valve Guides are meticulously machined from manganese bronze, a material renowned for its excellent wear characteristics and thermal conductivity. The guides feature a one-piece construction that ensures durability and consistent performance under high temperatures and pressures typical of high-performance engines. Their precise dimensions and oversize bore facilitate a snug, accurate fit within the cylinder head, reducing valve stem wobble and promoting optimal sealing and combustion efficiency.

The guides are engineered with attention to detail, including smooth internal bores to minimize friction and wear on the valve stems. The oversize OD allows for slight bore enlargements during engine rebuilds, providing flexibility for precision machining and ensuring a perfect fit for demanding applications. These guides are designed to withstand the rigors of high RPM, forced induction, and extended racing use, making them a reliable choice for performance enthusiasts.

Installation & Fitment

The GSC Power Division Exhaust Valve Guides are designed as direct replacements for OEM guides in the Nissan VK56 engine family. Installation involves removing the cylinder head from the engine, pressing out the old guides, and pressing in the new manganese bronze guides with proper tooling. No additional modifications are typically required, but precise bore sizing and alignment are essential for optimal performance. It is recommended to have a professional machine shop handle the installation to ensure proper fitment and longevity.

• Designed for use in 2009-2011 Nissan GT-R models equipped with the VK56 engine.
• Suitable for engine rebuilds, performance upgrades, or restoring engine reliability.
• Installation requires standard engine machine shop procedures, including guide removal and bore sizing.

What's Included

• One manganese bronze exhaust valve guide with a total length of 1.534 inches (38.96 mm)
• Oversize outer diameter (+.001 inch / 0.025 mm) for precise fitment
• Manufactured to strict quality standards, backed by GSC Power Division warranty

Ideal For

• Engine rebuilds for Nissan VK56 engines
• High-performance Nissan GT-R enthusiasts seeking durability and reliability
• Performance shops and professional engine builders
• Owners looking to restore or upgrade their engine's valve guide components