Here are some key factors that contribute to the difficulty of rebuilding an RX-7 engine:
1. Rotary Engine Complexity: The rotary engine in the RX-7 has a unique design that involves a triangular rotor spinning within a figure-8 shaped chamber. This design requires precise tolerances and proper assembly to ensure proper sealing and smooth operation. Rebuilding the rotary engine involves disassembling and reassembling various intricate components such as the rotor housing, rotors, apex seals, and side seals.
2. Specialized Tools and Equipment: Working on a rotary engine requires a range of specialized tools and equipment that may not be commonly found in a typical garage. These tools are designed for specific tasks such as measuring and adjusting seal clearances, removing and installing apex seals, and honing the rotor housings. Accessing certain parts of the engine may also require specific removal procedures and precautions.
3. Knowledge and Expertise: Rebuilding an RX-7 engine requires a thorough understanding of the rotary engine's unique design and operation. This includes knowledge of the proper techniques for disassembly, inspection, and reassembly. Rebuilding a rotary engine requires attention to detail and the ability to troubleshoot potential issues that may arise during the process.
4. Part Availability: Some parts for the rotary engine in the RX-7 may be difficult to source, especially if the vehicle is older. Certain components may be discontinued or hard to find, which can impact the overall rebuild process.
5. Time and Labor: Rebuilding an RX-7 engine can be a time-consuming process, often taking several weeks or even months depending on the extent of the work required. The labor involved is highly skilled and requires patience to ensure proper completion.
6. Cost: Rebuilding an RX-7 engine can be a costly endeavor, as it requires specialized parts and labor. The cost of the rebuild will depend on factors such as the condition of the engine, the parts needed, and the labor rates in your area.
Overall, rebuilding the engine on a 1987 Mazda RX-7 is a challenging task that is not recommended for inexperienced mechanics. It is advisable to seek the help of a qualified rotary engine specialist or a reputable automotive workshop with experience in rebuilding rotary engines to ensure the proper and successful completion of the project.
