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TurboRX7

The ultimate resource for rotary engine RX-7s — factory documents, rotary engine fundamentals, and PowerFC tuning guides.

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Rotary Basics

Covers the 13B 2‑rotor and 20B 3‑rotor engines — both production and racing variants. Includes a GT35R single turbo build image gallery, various rotary engine photos, and wideband datalogging information.

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TitleDateExcerpt
Choosing Fuel Injectors For Turbocharged Rotary BuildsInjector selection sets the ceiling for a turbo rotary engine long before the dyno operator reaches the final boost target. A 13B or 20B can make impressive…
Basic ignition timing maps for a street ported 13B-REWA street-ported 13B-REW needs a timing strategy that balances response, exhaust temperature, fuel quality and knock resistance. Porting changes how the engine…
PowerFC, Haltech Or Adaptronic For Your RX-7Choosing an engine management system for an RX-7 involves more than comparing features on a specification sheet. The best ECU depends on the rotary engine’s…
How to Use the Apex’i PowerFC Commander for Real-Time MonitoringThe Apex’i PowerFC Commander gives RX-7 owners a practical window into what the ECU is doing while the engine runs. Rather than relying on guesswork, you can…
PowerFC Tuning Parameters For A Reliable Rotary EnginePowerFC tuning parameters give an RX-7 owner direct control over fuel delivery and ignition behaviour, but each value affects several others. Injection timing,…
Apex'i PowerFC overview and basic 13B-REW setupThe Apex'i PowerFC has become a mainstay in Australian RX-7 workshops, sitting in many tuned FD3S cockpits as the go-to aftermarket ECU for the 13B-REW…
Why RX-7 Engines Sputter in Hot Weather and How to Fix ItAn RX-7 that runs cleanly on a cool morning can cough, hesitate or fall flat once the temperature climbs. Rotary engines are especially sensitive to heat…
How to Bleed the Cooling System on an FC3S Turbo IIThe FC3S Turbo II is a finely balanced bit of kit, but its rear radiator layout and the long coolant run through the chassis make air pockets a recurring…
RX-7 Overheating: Common Causes and How to Diagnose ThemAn RX-7 cooling system has little tolerance for neglected maintenance. A blocked radiator, weak water pump, failing thermostat or trapped air can quickly turn…
Cooling System Upgrades for the FD3S RX-7: Radiators, Ducting, and FansThe FD3S chassis was engineered in a colder climate than the one many Australian owners run their cars in. A long summer blast from Sydney up to the Gold…