Tein GSB48-91SS2 Street Advance Z Coil Over Suspension System Instruction Manual

1. Introduction

This manual provides essential information for the proper installation, operation, and maintenance of your Tein GSB48-91SS2 Street Advance Z Coil Over Suspension System. Designed for the 2004-2008 Acura TSX, this system offers enhanced driving dynamics and adjustability for both daily driving and spirited use. Please read this manual thoroughly before installation and use to ensure safety and optimal performance.

2. Product Overview

The Tein Street Advance Z Coil Over system is a high-performance suspension upgrade designed to improve handling, ride comfort, and vehicle aesthetics. It features updated internal components and external coatings for increased durability and product life. This system is manufactured in the United States, ensuring quality and reliability.

Figure 2.1: An overview of the Tein Street Advance Z Coil Over kit components, including the fully assembled coilover, separate spring, shock absorber, adjustment tools, and mounting hardware.

3. Key Features

The Tein Street Advance Z Coil Over system incorporates several advanced features for superior performance and user experience:

• Screw-Type Ride Height Adjustment: Allows for precise vehicle height customization.
• Twin-Tube Structure: Provides a longer stroke for improved ride comfort and handling on various road surfaces.
• OEM Mount Compatibility: Designed to utilize the vehicle's original upper mounts (mounts not included).
• Enhanced Durability: Features updated internal components and external coatings for extended product life.
• 16-Step Damping Force Adjustment: Enables fine-tuning of ride characteristics to match driving conditions and personal preference.
• EDFC Series Compatibility: Supports electronic damping force control systems for in-cabin adjustment.
• Reliable Warranty: Backed by a 3-year warranty.

Figure 3.1: An illustration of key features including screw-type ride height adjustment, twin-tube design, compatibility with genuine mounts, enhanced durability, a reliable warranty, optional eccentric camber adjustment, 16-step damping force adjustment (Street Advance Z only), and EDFC compatibility.

3.1. Shield Structure

Tein's innovative 'Shield Structure' is employed in the shock absorber design. This structure involves sealing oil and gas within the shell pipe using a new production method, enhancing durability and maintaining high performance over time. This design contributes to both high quality and cost reduction.

Figure 3.2: Diagram illustrating Tein's 'Shield Structure' for shock absorbers, comparing separable and non-separable designs, highlighting the sealing of oil and gas for improved durability and performance.

3.2. Screw-Type Ride Height Adjustment

The system allows for vehicle height adjustment by moving the lower spring seat up or down. This simple yet effective mechanism provides precise control over your vehicle's stance and handling characteristics.

Figure 3.3: Illustration demonstrating the screw-type ride height adjustment mechanism, where the lower spring seat is moved vertically to change the vehicle's ride height.

3.3. Twin-Tube Design

The twin-tube shock absorber design ensures a sufficient stroke, minimizing rebound force and contributing to a comfortable ride. This design is particularly beneficial for street use, where varying road conditions require ample stroke and smooth shock absorption to maintain stability and comfort.

Figure 3.4: Diagram explaining the twin-tube shock absorber design, which provides a longer stroke compared to a mono-tube design, contributing to a more comfortable ride on various road conditions.

3.4. OEM Mount Compatibility

The Tein Street Advance Z coilovers are designed to be compatible with and utilize the vehicle's original upper mounts. Please note that new upper mounts are not included with the coilover kit and must be reused from your existing suspension or purchased separately if replacement is needed.

Figure 3.5: Image showing an OEM upper mount, indicating that the Tein Street Advance Z coilovers are designed to be compatible with and utilize the vehicle's original upper mounts (mounts not included).

3.5. 16-Step Damping Force Adjustment

The Street Advance Z model features a 16-step damping force adjustment mechanism. By rotating the adjustment dial, you can change the shock absorber's characteristics to suit your preferred ride feel and various driving conditions. This allows for customization from a softer, more comfortable ride to a firmer, more responsive setup.

Figure 3.6: Illustration of the 16-step damping force adjustment mechanism, demonstrating how turning the adjustment dial alters the shock absorber's characteristics to suit different driving conditions such as street, highway, and winding roads.

4. Setup and Installation

Installation of the Tein GSB48-91SS2 Coil Over system requires specialized tools and automotive knowledge. It is highly recommended that installation be performed by a qualified professional technician. Improper installation can lead to vehicle damage, poor performance, or safety hazards.

4.1. Pre-Installation Checks

• Verify all components are present and undamaged according to the packing list.
• Ensure the vehicle is on a level surface and properly secured with jack stands.
• Gather all necessary tools, including spring compressors, wrenches, and torque specifications for your vehicle.

4.2. General Installation Steps (Consult a professional or vehicle-specific manual for detailed steps)

1. Safely remove the original suspension components.
2. Transfer OEM upper mounts to the new Tein coilover units, if applicable.
3. Install the new Tein coilover units, ensuring all bolts are torqued to manufacturer specifications.
4. Adjust initial ride height settings as desired (refer to Section 5.1).
5. Perform a wheel alignment after installation to ensure proper vehicle handling and tire wear.

5. Operation and Adjustments

The Tein Street Advance Z system allows for two primary adjustments: ride height and damping force.

5.1. Ride Height Adjustment

To adjust the vehicle's ride height, use the provided adjustment wrenches to loosen the lower spring seat lock ring and rotate the spring seat. Moving the spring seat up will lower the vehicle, and moving it down will raise it. Always ensure both sides of an axle are adjusted equally to maintain balance. After adjustment, securely tighten the lock ring. It is recommended to perform a wheel alignment after any significant ride height changes.

5.2. Damping Force Adjustment

The damping force can be adjusted in 16 steps using the dial located at the top or bottom of the shock absorber, depending on the specific unit. Turning the dial clockwise typically increases damping force (firmer ride), while turning it counter-clockwise decreases it (softer ride). Experiment with different settings to find your preferred balance of comfort and performance for various driving conditions.

• Softer Settings (e.g., 1-5 clicks from full soft): Suitable for daily driving, rough roads, and enhanced comfort.
• Medium Settings (e.g., 6-10 clicks from full soft): Balanced performance for spirited street driving and occasional track use.
• Firmer Settings (e.g., 11-16 clicks from full soft): Ideal for track use, aggressive driving, and minimizing body roll.

Always adjust damping force in pairs (front left/right, rear left/right) to maintain vehicle balance.

6. Maintenance

Regular maintenance ensures the longevity and optimal performance of your Tein coilover system.

• Regular Cleaning: Keep the coilover bodies, springs, and adjustment threads clean from dirt, salt, and debris. Use mild soap and water, then rinse thoroughly.
• Inspection: Periodically inspect the coilovers for any signs of damage, leaks, or corrosion. Check for loose bolts or worn bushings.
• Thread Lubrication: Apply a thin layer of anti-seize lubricant to the adjustment threads annually or as needed to prevent seizing and ensure smooth height adjustments.
• Dust Boots: Ensure dust boots are intact and properly seated to protect the shock shaft from contaminants.

7. Troubleshooting

This section addresses common issues you might encounter with your coilover suspension system.

7.1. Abnormal Noises (Clunking, Squeaking)

• Loose Components: Check all mounting bolts, spring seats, and lock rings for proper tightness.
• Worn Bushings: Inspect bushings for wear or damage. Replace if necessary.
• Spring Bind: Ensure springs are seated correctly and not binding.

7.2. Uneven Ride Height

• Improper Adjustment: Re-measure and adjust ride height on both sides of the vehicle to ensure they are equal.
• Spring Sag: In rare cases, a spring may sag over time. Inspect and compare spring lengths.

7.3. Poor Ride Quality / Handling

• Damping Force Setting: Adjust damping force to a softer or firmer setting as desired (refer to Section 5.2).
• Tire Pressure: Ensure tire pressures are set correctly.
• Wheel Alignment: An improper wheel alignment can significantly affect handling. Have the alignment checked by a professional.
• Damaged Component: Inspect for any bent or damaged suspension components.

If issues persist after troubleshooting, contact a qualified technician or Tein customer support.

8. Specifications

9. Warranty and Support

The Tein GSB48-91SS2 Street Advance Z Coil Over Suspension System is backed by a 3-year warranty, reflecting Tein's commitment to quality and durability. For specific warranty terms, conditions, and claim procedures, please refer to the official warranty documentation provided with your product or visit the official Tein website.

For technical assistance, installation questions, or warranty support, please contact Tein customer service directly. Ensure you have your product model number (GSB48-91SS2) and proof of purchase available when contacting support.

Figure 9.1: A banner highlighting the Tein Street Advance Z series and its 3-year warranty, emphasizing Tein's commitment to superior quality and safety.