Upgrading your 318 engine's cylinder heads can significantly improve its performance and horsepower output. Here's a guide to help you choose the right 318 heads:
Casting Design:
Consider the casting design of the cylinder heads. Look for heads with efficient combustion chamber designs, optimal valve angles, and improved airflow characteristics. Choose heads designed for performance applications to maximize horsepower and torque gains.
Material Construction:
Evaluate the material construction of the cylinder heads. Aluminum heads offer lightweight construction, improved heat dissipation, and enhanced airflow compared to cast iron heads. However, cast iron heads may offer better durability and resistance to warping under extreme conditions. Select heads made from quality materials suited to your performance goals and budget.
Valve Size and Configuration:
Pay attention to the valve size and configuration of the cylinder heads. Larger valves and improved valve angles can enhance airflow and combustion efficiency, resulting in increased horsepower and torque. Consider the valve size relative to your engine's displacement and intended use when selecting cylinder heads.
Combustion Chamber Size:
Evaluate the size and shape of the combustion chambers in the cylinder heads. Smaller, more efficient combustion chambers promote better fuel atomization and more complete combustion, leading to improved engine efficiency and power output. Choose cylinder heads with optimized combustion chamber designs for maximum performance gains.
Port Design and Flow:
Assess the port design and flow characteristics of the cylinder heads. Look for heads with well-ported intake and exhaust ports that promote efficient airflow and scavenging. Consider aftermarket cylinder heads with CNC-machined ports for precise flow control and improved performance.
Brand Reputation:
Choose cylinder heads from reputable brands known for manufacturing high-quality performance components. Research customer reviews, testimonials, and professional recommendations to gauge the reputation and track record of different cylinder head brands. Select heads from manufacturers with a history of producing reliable and proven products.
Compatibility and Installation:
Ensure compatibility between the cylinder heads and your engine block, pistons, camshaft, and intake manifold. Consider factors such as bolt pattern, deck height, and valve train components when selecting cylinder heads. Plan for professional installation and potential modifications to accommodate the new heads.
In conclusion, selecting the best 318 heads involves considering casting design, material construction, valve size and configuration, combustion chamber size, port design and flow, brand reputation, compatibility, and installation requirements. By evaluating these factors and choosing heads that suit your performance goals and vehicle application, you can maximize the power, efficiency, and reliability of your 318-powered vehicle.