BLOX RACING Block Guards

Honda D-Series SOHC VTEC (D16Z6-Y8) 1990–2005

Part #: BXPT-10201

Overview

The BLOX RACING Block Guards are precision-engineered engine components designed specifically for Honda D-Series SOHC VTEC engines, including models with the D16Z6 and Y8 engine codes. These billet aluminum guards provide essential reinforcement to the upper cylinder walls, helping to support the engine during high-stress conditions such as forced induction or spirited driving. Whether you're building a performance street car or a dedicated race engine, these block guards are a vital upgrade to enhance durability and reliability.

Constructed from high-quality AL6061 aluminum, the BLOX Racing block guards are CNC-machined to exact specifications, ensuring a perfect fit and maximum strength. They are ideal for enthusiasts seeking to prevent cylinder wall deformation, reduce the risk of head gasket failure, and improve overall engine integrity under demanding conditions. If you're pushing your Honda D-Series engine beyond stock power levels, these billet guards will help support your performance goals and extend engine life.

Key Features

The BLOX Racing Block Guards incorporate several advanced features to optimize engine support and cooling:

• Manufactured from high-grade AL6061 billet aluminum for exceptional strength and lightweight performance.
• CNC-machined for precise fitment, ensuring seamless integration with the engine block.
• Designed to reinforce the upper cylinder walls, especially in open-deck engine configurations.
• Provides maximum coolant passage to the cylinder head, aiding in efficient heat dissipation.
• Helps minimize the risk of head gasket failure and cracked cylinder sleeves during high-boost or high-RPM applications.
• Necessary for forced-induction setups, including turbocharging and supercharging, where cylinder wall support is critical.
• Enhances engine durability without adding significant weight or complexity.
• Compatible with a wide range of Honda D-Series engines from 1990 to 2005.

Construction & Design

The BLOX Racing block guards are meticulously CNC-machined from AL6061 billet aluminum, a material renowned for its excellent strength-to-weight ratio and corrosion resistance. The one-piece design ensures maximum structural integrity, providing a solid barrier that supports the upper cylinders against the stresses of high-performance operation. The guards feature precisely machined coolant passages that align perfectly with the engine block, promoting efficient cooling and reducing thermal stress.

The compact and lightweight construction minimizes any impact on engine weight or balance, while the robust design withstands the rigors of forced induction, high RPMs, and aggressive driving styles. The high-quality finish and tight tolerances guarantee a seamless fit, making installation straightforward for experienced mechanics and enthusiasts alike.

Installation & Fitment

The BLOX Racing Block Guards are designed as a direct bolt-on upgrade for Honda D-Series SOHC VTEC engines from 1990 through 2005. Installation typically involves removing the cylinder head and engine block components to access the upper cylinders. The guards are then carefully positioned and secured with the appropriate fasteners, following the included instructions. No cutting, drilling, or extensive modifications are required, making this a straightforward upgrade for experienced DIY enthusiasts or professional technicians.

• Easy, bolt-on installation with standard hand tools
• No need for engine disassembly beyond removing the cylinder head
• Designed to fit OEM and aftermarket engine blocks with open-deck configurations

What's Included

• Billet aluminum engine block guard
• All necessary mounting hardware and fasteners
• Installation instructions

Ideal For

• Honda D-Series engine enthusiasts seeking increased durability
• Builds involving forced induction such as turbocharging or supercharging
• High-performance street and race applications
• Engine builders aiming to prevent cylinder wall deformation under high stress