rotary enthusiast build

  • 1984 Mazda 12A Rotary Engine

    1984 Mazda 12A Rotary Engine – Good Compression Running RX-7 FB Engine for Sale

    $1,500.00

    Finding a genuine running Mazda 12A rotary engine has become increasingly difficult as classic RX-7s continue to gain popularity among collectors, restorers, and rotary enthusiasts. This 1984 Mazda 12A Rotary Engine – Good Compression | Running presents an excellent opportunity to acquire a complete, running rotary engine with good compression, making it an ideal candidate for restoration projects, engine replacements, custom builds, or vintage Mazda preservation.

    Originally found in the iconic first-generation Mazda RX-7 (FB), the 12A rotary engine helped establish Mazda’s reputation for innovative engineering, lightweight performance, and high-revving excitement. Decades later, the 12A remains one of the most beloved rotary engines ever produced.

    This engine was running prior to removal and has demonstrated good compression, two of the most important factors buyers look for when evaluating a used rotary engine. Whether you’re restoring a classic RX-7 to factory specifications or searching for a solid foundation for a rotary project, this engine offers genuine Mazda rotary heritage and proven functionality.

    Sold exactly as shown in the photographs, this engine provides an authentic opportunity to own one of Mazda’s most recog

  • Mazda 13B 6-Port Street Port

    Mazda 13B 6-Port Street Port / Half Bridge Rotary Engine Build

    $2,500.00

    If you’re searching for the perfect balance between street drivability, responsive power delivery, and the unmistakable sound of a performance rotary engine, the Mazda 13B 6-Port Street Port / Half Bridge Rotary Engine Build delivers exactly that.

    Freshly built and designed for enthusiasts who appreciate naturally aspirated rotary performance, this engine combines a carefully executed street port with a half-bridge modification to maximize airflow while preserving reliability for real-world driving. The result is an engine that pulls hard through the mid-range, continues to build power at higher RPM, and produces the aggressive rotary exhaust note that enthusiasts seek.

    Whether you’re restoring an RX-7, upgrading an RX-8, or building a custom rotary-powered project, this freshly assembled 13B offers an outstanding foundation for a responsive and enjoyable driving experience.

    Unlike many turbo-focused rotary builds, this all-motor configuration emphasizes throttle response, linear power delivery, and the unique characteristics that made Mazda rotary engines legendary among performance enthusiasts worldwide.

  • SA / FC / FD Peripheral Port Rotary Engines

    SA / FC / FD Peripheral Port Rotary Engines – Built for Power

    $2,500.00

    If you’re searching for the ultimate rotary engine setup for your Mazda RX-7 project, the SA / FC / FD Peripheral Port Rotary Engines – Built for Power deliver the airflow, horsepower potential, and unmistakable rotary sound that enthusiasts crave. Designed specifically for performance-minded builders, these engines are engineered to thrive at high RPM while providing the aggressive power characteristics that make peripheral port rotary builds legendary.

    Whether you’re building a dedicated drag car, circuit racer, drift machine, or an extreme street build, these peripheral port rotary engines offer the foundation needed to achieve serious power goals. Built by experienced rotary specialists, each engine is optimized for maximum intake efficiency, improved breathing, and enhanced top-end performance.

    Compatible with multiple Mazda RX-7 generations including the SA22C, FC3S, and FD3S platforms, these engines represent some of the most sought-after rotary configurations available today.