30/06/2012
The Mazda RX-7 FD is a legend. Its distinctive rotary engine, sleek styling, and renowned handling have cemented its place as a true JDM icon. For enthusiasts, owning an FD is a dream, but for those new to the rotary world, buying one can be a daunting prospect. This guide aims to equip you with the knowledge to navigate the market and find a well-maintained example of this remarkable machine.
Understanding the RX-7 FD
Before diving into the buying process, it's crucial to understand what makes the RX-7 FD so special, and also what its potential pitfalls are. Produced from 1992 to 2002, the FD generation (third generation) is celebrated for its twin-turbocharged 13B-REW rotary engine, producing around 255 bhp in early models and up to 280 bhp in later versions. Its lightweight chassis and near-perfect 50/50 weight distribution contribute to its agile and engaging driving dynamics. However, the rotary engine, while brilliant in its performance, requires specific maintenance and can be prone to certain issues if not properly cared for.
Where to Find an RX-7 FD
Finding an RX-7 FD for sale requires patience and a bit of research. The most common avenues include: * Online Marketplaces: Websites like eBay Motors, Bring a Trailer, Cars & Bids, and enthusiast forums (e.g., RX7Club.com) are excellent places to start. These platforms often feature detailed listings with extensive photo galleries and often owner histories. * Specialist Dealerships: Some dealerships specialise in JDM (Japanese Domestic Market) cars or rotary-powered Mazdas. These can be a good source for well-inspected and sometimes imported examples. * Private Sellers: While potentially offering better value, buying from a private seller requires more due diligence on your part. Networking within the RX-7 community can also lead to private sales.
Key Areas to Inspect
When you find a potential RX-7 FD, a thorough inspection is paramount. Focus on these critical areas:
1. The Rotary Engine (13B-REW)
The heart of the RX-7 FD is its rotary engine. This is where most potential buyers express concern, and rightly so. Apex seals are a critical component, and their wear directly impacts compression. Low compression is a death knell for a rotary engine. * Compression Test: This is non-negotiable. A healthy rotary engine should have good, even compression across all rotor faces. Ideally, you want readings above 6.0 bar (approx. 87 psi) for each face, with minimal variation between them (less than 0.5 bar). A reputable mechanic with rotary experience can perform this test. * Oil Consumption: Rotary engines naturally consume oil as part of their lubrication system. However, excessive oil consumption can indicate worn apex seals or oil control rings. Monitor the oil level regularly. * Cooling System: Overheating is a major enemy of rotary engines. Check the radiator, hoses, water pump, and ensure the fans are operational. Look for any signs of leaks or corrosion. * Turbochargers: The sequential twin-turbo system is complex. Listen for unusual noises from the turbos, check for oil leaks, and inspect the intercooler for damage. * Maintenance History: Ask for detailed service records. Look for evidence of regular oil changes with the correct oil (synthetic is recommended), coolant flushes, and any rebuilds or apex seal replacements.
2. Bodywork and Chassis
Rust is a common enemy for many older performance cars, and the RX-7 FD is no exception. * Rust Inspection: Pay close attention to the wheel arches, sill panels, rear quarter panels, boot floor, and around the windscreen and rear window seals. Surface rust can be dealt with, but structural rust is a serious and expensive problem. * Accident Damage: Inspect the panel gaps for consistency. Look for signs of poor repairs, such as overspray, mismatched paint, or ill-fitting panels. Check the chassis rails and suspension mounting points for any signs of straightening or damage. * Paint Condition: While cosmetic, a good quality paint job indicates a car that has likely been well cared for. Check for fading, swirl marks, or dents.
3. Interior
The FD's interior is a blend of sporty and driver-focused design. Check for: * Wear and Tear: Examine the seats (especially the driver's bolster), steering wheel, gear knob, and pedals for excessive wear. * Electronics: Test all electrical components, including the power windows, mirrors, air conditioning, stereo system, and dashboard lights. The digital climate control unit can be a point of failure. * Smell: Any unusual smells, like mould or persistent dampness, could indicate water ingress.
4. Suspension and Brakes
Given its performance pedigree, these components are vital. * Suspension: Listen for any clunks or rattles from the suspension. Check for worn bushings, damaged shocks, or leaking suspension components. * Brakes: Inspect the brake discs and pads for wear. Ensure the braking system feels firm and responsive, with no pulling to one side. * Tyres: Check the tyre condition and age. Uneven wear can indicate alignment issues.
Common RX-7 FD Issues and Considerations
| Issue | Description | Potential Cost (£) | Mitigation |
|---|---|---|---|
| Apex Seal Failure | Worn apex seals lead to loss of compression and engine power. | £2,000 - £5,000+ | Regular maintenance, proper warm-up/cool-down, compression testing before purchase. |
| Overheating | Rotary engines are sensitive to heat. | £500 - £2,000+ | Meticulous cooling system maintenance, monitoring temperature gauge. |
| Vacuum Hose Issues | The complex vacuum system can degrade over time, causing running problems. | £100 - £500 | Inspect all hoses for cracks, replace as needed. |
| Ignition System | Coil packs and plugs can fail, leading to misfires. | £200 - £600 | Regular replacement of spark plugs and coils. |
| Catalytic Converter | Can become clogged, especially on poorly maintained cars. | £300 - £800 | Ensure the engine is running cleanly and efficiently. |
| Rust | Particularly in common areas like sills and arches. | £500 - £5,000+ | Thorough inspection, preventative undersealing. |
| Air Conditioning Unit | The digital climate control can fail. | £300 - £1,000 | Test operation thoroughly. |
Note: Costs are estimates and can vary significantly based on location and labour rates.
What to Ask the Seller
Don't be afraid to ask questions. A knowledgeable seller will be happy to provide details. Key questions include: * What is the car's service history? Are there records of apex seal replacements or engine rebuilds? * Has the car ever overheated? How was it rectified? * What oil do you use, and how often is it changed? * Has the car had any modifications? If so, what are they and why were they done? * Has the car had any accident damage? * When was the last compression test performed, and what were the results?
The Rotary Engine: A Different Kind of Care
Owning a rotary-powered car is a commitment. They require a different approach to maintenance than conventional piston engines. * Warm-up and Cool-down: Always allow the engine to warm up fully before driving hard and let it idle for a minute or two after a spirited drive to allow the turbos to cool down. This helps prevent thermal shock and premature wear. * Oil: Use a high-quality synthetic oil specifically recommended for rotary engines. Regularly check and top up the oil level – never let it get low. * Spark Plugs: Rotary engines use two spark plugs per rotor. They tend to wear out faster than those in piston engines and require specific types. * Fuel: While not as critical as oil and maintenance, using good quality fuel can help keep the engine healthy.
Conclusion
The Mazda RX-7 FD is a truly special car, offering an unparalleled driving experience. While the rotary engine demands respect and diligent maintenance, finding a well-cared-for example can be incredibly rewarding. By understanding the common issues, conducting thorough inspections, and asking the right questions, you can significantly increase your chances of finding a fantastic FD that will provide years of enjoyment. Patience and due diligence are your best allies in this pursuit. Happy hunting!
Frequently Asked Questions
Q1: Is the RX-7 FD a reliable car?A: When properly maintained and driven correctly, the RX-7 FD can be reliable. However, the rotary engine is more sensitive to neglect and requires a specific maintenance schedule. Key areas like the cooling system and lubrication are critical. Q2: How much does it cost to maintain an RX-7 FD?A: Maintenance costs can be higher than for a typical car, especially if you need to address rotary-specific issues like apex seals. Regular servicing, using the correct fluids, and proactive checks are essential. Q3: Can I import an RX-7 FD to the UK?A: Yes, many RX-7 FDs have been imported into the UK, particularly from Japan. Ensure any import has been correctly registered and has undergone necessary checks. Q4: What are the most common modifications on an RX-7 FD?A: Common modifications include exhaust systems, intake upgrades, ECU remapping, upgraded intercoolers, and sometimes engine conversions or turbo upgrades. Be aware that modifications can affect reliability and resale value if not done correctly. Q5: Should I buy an RX-7 FD as a first sports car?A: It depends on your mechanical aptitude and budget. If you are mechanically inclined and prepared for the unique demands of a rotary engine, it can be a thrilling first sports car. If you prefer a lower-maintenance ownership experience, other options might be more suitable.
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