Stories
| Title | Date | Excerpt |
|---|---|---|
| The Complete Guide to Turbocharging an FD3S RX-7 | The FD3S RX-7 already left Hiroshima with one of the most distinctive turbo systems ever fitted to a production sports car. Its 13B-REW uses sequential twin… | |
| DIY Rotary Porting: Tools and Techniques for Australian Builders | Rotary engines reward hands-on owners, and nowhere is this more true than in Australia, where an FD RX-7 bought off a mate in Brisbane or a Perth auction yard… | |
| Choosing port timing for turbo and naturally aspirated rotaries | Picking the right port timing for a rotary build is one of those decisions that ripples through every other part of the engine package. The overlap between the… | |
| Peripheral port limits on a street-driven RX-7 | A peripheral port can transform the character of a Mazda rotary engine. By relocating the intake openings from the side housings to the rotor housings, the… | |
| Large street port tuning for the RX-7 — power with practicality | The Mazda RX-7 has held a quiet but devoted following across Australian garages for decades, from Sydney suburbs to the backstreets of Adelaide. A large street… | |
| Porting a 13B Rotary Engine: Bridgeport vs Peripheral vs Street Port | Porting a 13B rotary engine reshapes the intake and exhaust ports in the side and rotor housings to alter how much charge enters and exits the combustion… | |
| Nikasil vs iron liners in Mazda rotary rotor housings | The Nikasil and iron-sleeved rotor housings have split Mazda rotary enthusiasts for decades, and the debate still shapes how people build and rebuild their… | |
| How to properly break in a freshly rebuilt rotary engine | A freshly assembled 13B or 20B is a precision instrument, and the way it is treated during its first hundred hours determines whether the apex seals, eccentric… | |
| Side seal and corner seal failure in Mazda RX-7 engines | Rotary engines depend on a precise seal arrangement to keep combustion pressure inside each chamber. The apex seals receive most of the attention, yet the side… | |
| Cera-metallic vs carbon apex seals: Choosing the right seal | The apex seal is the single most critical wear component inside any Wankel-style rotary, and the material choice between cera-metallic and carbon defines how… |