Instead of searching for a direct "drop-in" replacement, you'll likely need to focus on injectors with similar flow rates and impedance (resistance). You'll need to know the flow rate (typically measured in lbs/hr or cc/min) of your original 1987 RX-7 injectors to find suitable alternatives. This information is usually available in service manuals or online resources specific to your model and engine (13B-REI in this case).
Where to look for compatible injectors:
* Aftermarket suppliers: Companies specializing in performance parts for rotary engines are your best bet. They often offer injectors designed for modified RX-7s and will provide specifications. Search for "RX-7 fuel injector upgrades" or specify your engine (13B-REI).
* Cross-referencing databases: Websites and online catalogs for automotive parts sometimes allow searching by flow rate and impedance. This requires knowing the specs of your original injectors.
* Other Mazda vehicles: While unlikely to be a direct fit, some injectors from other Mazda models *might* have similar specifications. This is a less reliable approach and requires significant cross-referencing.
Important Considerations:
* Flow rate: This is crucial. Incorrect flow rates can lead to lean or rich conditions, harming your engine.
* Impedance: This affects how the fuel injectors are controlled by the ECU. Mismatch can cause poor performance or damage the ECU.
* Connector type: The physical connector on the injector must match your car's wiring harness. Adapters might be available, but it's simpler if they're the same.
* Length and overall dimensions: The injectors need to fit physically in the fuel rail.
In short: Don't just look for any "replacement" injector. You need to match the flow rate and impedance. Consult a rotary engine specialist or a reputable performance parts supplier to ensure compatibility. Improper injector selection can cause serious engine damage.
