1993 Nissan 240sx Coilovers: Upgrade Options

The 1993 Nissan 240SX, a legend in the drifting and tuner communities, offers a fantastic platform for modification. One of the most common and impactful upgrades is the installation of coilovers. This article provides a comprehensive overview of coilover options for the 1993 240SX, helping you make an informed decision to achieve your desired handling and performance goals.

Why Upgrade to Coilovers on Your 1993 Nissan 240SX?

Before diving into specific coilover options, let's explore the advantages of upgrading from the factory suspension. The original suspension on a 1993 240SX, while adequate for everyday driving, lacks the adjustability and performance required for spirited driving, track days, or even a more aggressive street setup. Coilovers offer significant improvements in several key areas:

Ride Height Adjustment: This is perhaps the most immediate and noticeable benefit. Coilovers allow you to lower your 240SX, improving its stance and reducing body roll. The ability to fine-tune ride height also impacts the car's center of gravity, directly affecting handling.
Damping Adjustment: Many coilovers feature adjustable damping, which controls the rate at which the shock absorber compresses and rebounds. This allows you to tailor the suspension's responsiveness to different driving conditions, from comfortable street cruising to aggressive track performance.
Improved Handling: By lowering the car and optimizing damping, coilovers significantly improve handling characteristics. You'll experience reduced body roll, increased stability in corners, and more precise steering response.
Performance Potential: For serious performance enthusiasts, coilovers provide a solid foundation for further suspension tuning, such as corner weighting and spring rate adjustments. They are crucial for competitive drifting, time attack, and other motorsport disciplines.
Aesthetics: Let's be honest, a lowered 240SX looks great! Coilovers offer a clean and adjustable way to achieve your desired aesthetic.

Understanding Coilover Components and Terminology

Before comparing different coilover kits, it's important to understand the key components and terminology:

Shock Absorber (Damper): The shock absorber controls the movement of the spring and the suspension. Damping adjustment refers to the ability to alter the shock's resistance to compression and rebound.
Spring: The spring supports the weight of the vehicle and absorbs bumps and vibrations. Spring rates are measured in pounds per inch (lbs/in) or kilograms per millimeter (kg/mm), indicating how much force is required to compress the spring by one inch or millimeter, respectively. Stiffer springs provide better handling but can compromise ride comfort.
Coilover Body: This is the threaded housing that surrounds the shock absorber and spring, allowing for ride height adjustment.
Top Mounts: These connect the coilover to the vehicle's chassis. Top mounts can be fixed or adjustable. Adjustable top mounts, often with pillow ball bearings, allow for camber adjustment, which is crucial for optimizing handling and tire wear.
Ride Height Adjustment: Typically achieved by rotating the coilover body up or down on its threaded housing.
Preload: The amount of compression already present in the spring when the suspension is at rest. Preload can be adjusted, but it primarily affects ride height rather than spring rate.
Damping Force: The resistance offered by the shock absorber to the movement of the suspension.

Coilover Options for the 1993 Nissan 240SX

The market offers a wide range of coilover options for the 1993 240SX, catering to different budgets and performance goals. Here's a breakdown of some popular choices, categorized by price and intended use:

Entry-Level Coilovers (Budget-Friendly)

These coilovers are typically the most affordable option, ideal for those looking for basic ride height adjustment and a modest improvement in handling. While they may lack advanced features like damping adjustment, they can still provide a noticeable upgrade over the stock suspension.

Raceland Coilovers: A popular choice for budget-conscious enthusiasts. Raceland coilovers are known for their affordability but may compromise ride quality and long-term durability. Generally not recommended for serious track use.
Megan Racing EZ Street Coilovers: Another entry-level option that offers some adjustability. Ride quality is often firmer than stock but acceptable for street use.

Considerations: Entry-level coilovers may have limited damping adjustment or none at all. Their build quality may not be as robust as higher-end options. They are best suited for street use and occasional spirited driving.

Mid-Range Coilovers (Performance-Oriented Street)

Mid-range coilovers strike a balance between performance, adjustability, and price. They typically offer adjustable damping and a more refined ride quality than entry-level options. They are suitable for daily driving, weekend track days, and aggressive street use.

Tein Flex Z Coilovers: A popular choice for their damping adjustability and reasonable price. Tein is a reputable brand known for its quality and reliability.
BC Racing BR Series Coilovers: Another highly regarded option in this category. BC Racing coilovers offer a wide range of damping adjustment and are known for their performance and durability. They are a popular choice for both street and track use.
ISC N1 Coilovers: Feature 32-way damping adjustment. Good value for the money with options for custom spring rates.
Fortune Auto 500 Series Coilovers: Made in the USA with quality components, these coilovers offer excellent performance and customizability.

Considerations: Mid-range coilovers offer a good balance of performance and comfort. Consider models with independent ride height and preload adjustment for optimal tuning.

High-End Coilovers (Track and Competition)

High-end coilovers are designed for serious performance enthusiasts and competitive drivers. They feature advanced damping technology, high-quality materials, and extensive adjustability, allowing for precise suspension tuning. These coilovers are typically more expensive but offer unparalleled performance and durability.

Ohlins Road & Track Coilovers: Considered by many to be the gold standard in suspension technology. Ohlins coilovers offer exceptional damping performance and ride quality, making them suitable for both street and track use.
KW Variant 3 Coilovers: Another top-tier option known for its advanced damping technology and precise handling. KW coilovers are a popular choice for serious track enthusiasts.
Fortune Auto Dreadnought Pro 2-Way/3-Way Coilovers: With external reservoirs, these coilovers offer a wide range of adjustment for serious track applications.

Considerations: High-end coilovers are an investment. They require expertise in suspension tuning to realize their full potential. Professional installation and corner weighting are highly recommended.

Factors to Consider When Choosing Coilovers

When selecting coilovers for your 1993 240SX, consider the following factors:

Your Budget: Coilover prices can range from a few hundred dollars to several thousand. Determine your budget upfront and stick to it.
Your Intended Use: Are you primarily driving on the street, or do you plan on tracking your car regularly? Choose coilovers that are appropriate for your intended use.
Damping Adjustment: If you want the ability to fine-tune your suspension, choose coilovers with adjustable damping. The more levels of adjustment, the more tailored you can get the ride.
Spring Rates: Consider your desired ride quality and handling characteristics when selecting spring rates. Stiffer springs will provide better handling but may compromise ride comfort. A good starting point can be found within online 240SX forums.
Top Mounts: Adjustable top mounts allow for camber adjustment, which is crucial for optimizing handling and tire wear. Pillow ball mounts will transmit more road noise. Rubber isolated top mounts will result in a quieter ride.
Brand Reputation: Choose coilovers from a reputable brand known for its quality and reliability. Read reviews and do your research before making a purchase.
Installation: Installation can be done at home but requires mechanical experience and proper tools. Professional installation is recommended.

Installation and Alignment

Installing coilovers is a moderately challenging task that requires mechanical experience and the proper tools. If you're not comfortable working on your car's suspension, it's best to have them professionally installed. After installation, it's crucial to get a proper wheel alignment to ensure optimal handling and tire wear. Consider getting a performance alignment that takes into account your specific driving style and suspension setup.

Final Thoughts

Upgrading to coilovers is one of the most impactful modifications you can make to your 1993 Nissan 240SX. By carefully considering your budget, intended use, and the features of different coilover options, you can choose a kit that will significantly improve your car's handling, performance, and aesthetics. Remember to prioritize safety and proper installation to enjoy the full benefits of your new suspension.