240sx Right Hand Drive Conversion

So, you're thinking about converting your 240SX to right-hand drive (RHD)? Or maybe you're already in the middle of it and hitting a few snags? It's a popular modification, especially for those who want that authentic JDM feel or are importing a chassis and want it to match the local driving orientation. It's a challenging project, though, definitely not for the faint of heart. This article aims to cover some common problems and provide solutions I've seen in the field, hopefully making your RHD swap a little smoother.

Common Problems & Solutions

1. Wiring Harness Woes

This is arguably the biggest hurdle. The wiring harness in your 240SX is designed for left-hand drive. Shifting everything to the right means a lot of extension and rerouting. You'll encounter issues with everything from headlight wiring to gauge clusters.

Solution:

• Consider a pre-made RHD conversion harness: Companies like Wiring Specialties and Chase Bays offer harnesses specifically designed for RHD 240SX conversions. This is the easiest, albeit most expensive, option. Expect to pay between $800-$1500 depending on the harness type and features. The upside is that it’s plug-and-play, saving you countless hours of frustration.
• DIY Harness Modification: This is the more budget-friendly, but also the more time-consuming, approach. You'll need a wiring diagram for your 240SX model year, along with a good multimeter, wire strippers, crimpers, heat shrink tubing, and plenty of extra wire. Important tip: Use the same gauge wire as the original harness to avoid voltage drops and potential electrical fires. Take your time and label everything meticulously! Before cutting any wires, plan your rerouting and take detailed measurements for the extensions. This can easily turn into a multi-day project.
• Professional Wiring Services: If you're not comfortable tackling the wiring yourself, consider hiring a professional automotive electrician. They can handle the modifications safely and efficiently. Expect to pay upwards of $500-$1000 for labor, depending on the complexity.

2. Steering Rack and Column Compatibility

The steering rack and column need to be swapped to the right side. Simply mirroring the existing system won't work.

Solution:

• RHD Steering Rack and Column: The most straightforward solution is to source an RHD steering rack and column from a Japanese market S13 or S14 (depending on your 240SX model). Ensure compatibility with your specific chassis. Verify the rack's condition before installation, checking for leaks, play, and smooth operation.
• Custom Steering Shaft: Some individuals opt to modify the existing steering shaft. This is generally not recommended unless you have extensive fabrication experience and access to proper welding equipment. Steering components are critical for safety, and any modifications should be performed with extreme care. If you are going this route, consult with a qualified engineer.

3. Dashboard and Interior Modifications

The dashboard and center console are designed for a left-hand drive configuration. Adapting them to RHD requires some ingenuity.

Solution:

• RHD Dashboard and Components: Importing an RHD dashboard, center console, and associated trim pieces from Japan is the cleanest solution. This provides a factory-like appearance. However, finding these parts can be challenging and expensive, especially for less common model years. Factor in shipping costs and potential import duties.
• Custom Fabrication: Some enthusiasts choose to modify the existing dashboard. This can involve cutting, reshaping, and fiberglassing to reposition gauges, vents, and other components. This is a highly skilled process and requires significant time and expertise. It's best left to experienced fabricators.
• Hybrid Approach: You can use a combination of RHD parts and modified LHD components. For example, you might use an RHD gauge cluster surround but modify the existing dashboard to accommodate it.

4. Brake and Clutch Lines

The brake and clutch lines will need to be rerouted and possibly extended to reach the master cylinders on the right side.

Solution:

• Custom Brake and Clutch Lines: The best approach is to have custom brake and clutch lines made to the correct length. This ensures proper fitment and avoids potential leaks. Many automotive hose and fitting shops can fabricate custom lines to your specifications. Use high-quality stainless steel braided lines for improved durability and performance.
• Rerouting Existing Lines: While possible, rerouting the existing lines can be tricky. Ensure the lines are not kinked or stretched during the rerouting process. Using new fittings is highly recommended.

5. Pedal Box

The pedal box needs to be relocated to the right side. This involves removing the LHD pedal box and installing an RHD version.

Solution:

• RHD Pedal Box: Source an RHD pedal box from a Japanese market 240SX or equivalent Nissan model. Ensure compatibility with your specific chassis. Inspect the pedal box for wear and tear before installation.
• Reinforcement: When installing the RHD pedal box, reinforce the mounting points. The chassis may not be designed to withstand the stress of pedal operation on the right side. Welding in reinforcing plates can help prevent cracking and flex.

6. HVAC System

The HVAC system (heating, ventilation, and air conditioning) is another area that requires modification. The blower motor and ductwork are typically located on the left side and need to be relocated or adapted.

Solution:

• RHD HVAC System: Importing an RHD HVAC system is the most straightforward solution, but it can be expensive and difficult to find all the necessary components.
• Custom Ductwork: Modifying the existing ductwork is a common approach. This involves cutting, reshaping, and extending the ducts to reach the vents on the right side. Use heat-resistant materials for the extensions.
• Simplified System: Some enthusiasts choose to simplify the HVAC system or even remove the air conditioning altogether to save weight and complexity. This is not recommended if you live in a hot climate!

7. Windshield Wiper Motor and Linkage

The windshield wiper motor and linkage need to be adapted to operate the wipers in the correct direction from the right side.

Solution:

• RHD Wiper Motor and Linkage: Sourcing an RHD wiper motor and linkage is the ideal solution. Ensure compatibility with your specific model.
• Modifying the Linkage: Modifying the existing linkage can be tricky and may require some fabrication skills. The goal is to reverse the direction of the wiper arms while maintaining proper range of motion.

8. Legality & Inspection

Always check your local laws and regulations regarding RHD conversions. Some jurisdictions may have restrictions or require inspections to ensure the vehicle meets safety standards.

Solution:

• Research Local Laws: Contact your local Department of Motor Vehicles (DMV) or equivalent agency to inquire about the legality of RHD conversions.
• Inspection Preparation: If an inspection is required, ensure that all modifications are performed to a high standard and that the vehicle meets all applicable safety requirements. This may include brake testing, headlight alignment, and emissions testing.

Essential Tools

Here's a list of tools that will be invaluable for your RHD conversion:

• Socket set and wrenches (metric)
• Screwdriver set (Phillips and flathead)
• Multimeter
• Wire strippers and crimpers
• Heat gun
• Soldering iron (optional, but highly recommended for secure wiring connections)
• Pliers (needle-nose, side cutters)
• Drill and drill bits
• Grinder (for minor modifications)
• Welder (if you plan to fabricate any components)
• Wiring diagrams for your specific 240SX model year
• Pen and paper (for labeling and taking notes)

Approximate Costs

The cost of an RHD conversion can vary widely depending on the approach you take and the parts you source. Here's a rough estimate:

• Parts (RHD dashboard, steering rack, pedal box, etc.): $1500 - $5000+
• Wiring harness: $800 - $1500 (if purchasing a pre-made harness)
• Custom brake and clutch lines: $200 - $400
• Labor (if hiring a professional): $2000 - $5000+
• Miscellaneous (wire, connectors, fluids, etc.): $200 - $500

Total Estimated Cost: $4700 - $12,400+

Note: These are just estimates. The actual cost may be higher or lower depending on your specific circumstances.

Final Thoughts

Converting your 240SX to RHD is a significant undertaking. It requires a considerable amount of time, effort, and money. However, the end result can be a unique and rewarding modification. Before embarking on this project, carefully consider your skills, resources, and budget. Do your research, plan thoroughly, and don't be afraid to ask for help from experienced individuals or online communities. Good luck with your conversion!