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$2,000.00
13B 6-Port Street Port Rotary Engine
If you’re looking for a rotary engine that delivers the perfect balance of performance, drivability, and reliability, this Another 6-Port Street Port 13B Rotary Build, Freshly Put Together and Ready for Action is an excellent choice.
Built with enthusiasts in mind, this freshly assembled 13B combines the proven reliability of the 6-port design with the added airflow and performance benefits of a professionally executed street port. The result is an engine that offers a noticeable increase in power, crisp throttle response, and the unmistakable rotary sound that Mazda enthusiasts love.
Whether you’re restoring an RX-7, building a weekend street machine, completing a custom swap, or upgrading your current rotary setup, this engine provides a solid foundation for a fun and dependable performance build.
Price: $2,000 USD / $2,900 AUD
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$2,500.00
If you’re searching for a proven rotary engine for your Mazda RX-7 FB project, this 13B Rotary Engine Available – Limited-Time Price Reduction is a fantastic opportunity. Built using a carefully selected combination of desirable early and late-model Mazda rotary components, this rebuilt 13B offers the performance, reliability, and rotary character enthusiasts demand.
Featuring a street-ported 4-port configuration, strong compression numbers, low mileage since rebuild, and upgraded 3mm apex seals, this engine is ideally suited for street-driven RX-7s, weekend performance cars, restoration projects, and custom rotary builds.
Compatible with Mazda RX-7 FB models from 1979–1985, this engine includes both a clutch and flywheel, providing additional value and helping simplify installation. Whether you’re replacing a tired original engine or upgrading to a stronger rotary setup, this rebuilt 13B delivers the perfect blend of classic rotary performance and modern reliability.
For enthusiasts who appreciate authentic Mazda rotary engineering, opportunities like this are becoming increasingly rare.
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$2,000.00
If you’re searching for a serious rotary engine built to handle aggressive power goals, the 13B Turbo II Performance Build – Dowel Pinned & Bridgeported delivers the airflow, durability, and performance foundation enthusiasts demand. Based on the legendary Mazda 13B Turbo II platform found in the FC RX-7, this professionally prepared engine has been upgraded with performance-focused modifications designed to maximize horsepower potential while maintaining reliability under demanding conditions.
Featuring dowel-pinned irons, a fully bridgeported intake configuration, and semi-peripheral port enhancements, this engine is engineered for enthusiasts seeking exceptional top-end performance, aggressive throttle response, and a proven platform for high-boost turbocharged applications.
Whether you’re building a dedicated drag car, a competitive street machine, or a custom rotary-powered project, this engine provides a strong foundation capable of supporting serious performance goals.
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$1,800.00
The Mazda 13B 1/2 Studded Streetport Engine – Fresh Build is a performance-focused rotary engine designed for enthusiasts seeking a strong, reliable foundation for street, track, or custom swap applications. Freshly assembled using a genuine Mazda 13B rotary platform, this build combines proven reliability upgrades with performance-enhancing modifications that improve airflow, power potential, and durability.
Featuring a professionally prepared streetport configuration and upgraded 1/2-inch stud hardware, this engine offers the ideal balance between daily drivability and serious performance capability. Whether you’re restoring a classic Mazda RX-7, upgrading an RX-8 project, or building a custom rotary-powered vehicle, this engine provides a versatile platform capable of supporting naturally aspirated or turbocharged performance goals.
For rotary enthusiasts who understand the importance of a properly built engine, the Mazda 13B 1/2 Studded Streetport Engine – Fresh Build delivers confidence, performance, and long-term reliability.
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$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.
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$3,500.00
Product Overview
For Sale: Rebuilt Mazda RX-7 13B Turbo Bridge Port Motor (SER5 Update) – Block Only
If you’re searching for a serious foundation for your next rotary performance build, this Rebuilt Mazda RX-7 13B Turbo Bridge Port Motor (SER5 Update) – Block Only represents an increasingly rare opportunity. Freshly rebuilt and never started, this engine combines the legendary performance potential of Mazda’s 13B turbo rotary platform with desirable SER5 large dowel upgrades and professional internal enhancements.
Built specifically for enthusiasts who understand the value of a properly prepared rotary engine, this motor features a bridge-ported configuration for improved airflow, brand-new race apex seals, new corner seals, fresh springs, and a new water retention kit. The engine remains essentially untouched since assembly and was only removed from protective wrapping for inspection and photographs.
Whether you’re restoring an FD RX-7, building a dedicated track machine, assembling a high-horsepower street car, or creating a custom rotary-powered project, this rare SER5 large dowel engine provides an exceptional starting point.
Rotary enthusiasts know that finding a fresh, professionally rebuilt 13B turbo engine with the desirable SER5 update is becoming increasingly difficult. This engine eliminates the uncertainty often associated with used rotary motors and provides a proven platform ready for completion according to your specific goals.
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$2,500.00
If you’re searching for a high-performance rotary engine that combines reliability, responsiveness, and proven rotary engineering, this Semi-PP Dowel-Pinned Mazda 13B Rotary Engine – Fresh Build delivers exactly that. Built for enthusiasts who want more than a standard street-port setup, this professionally assembled engine features semi-peripheral porting for increased airflow and a reinforced dowel-pinned block for superior structural integrity.
The Mazda 13B rotary engine remains one of the most sought-after powerplants in the rotary community due to its lightweight design, high-RPM capability, and exceptional power potential. This fresh build is designed for enthusiasts building a serious Mazda RX-7, Mazda RX-8, track car, drift machine, or custom rotary swap project.
Combining the benefits of semi-peripheral porting with a strengthened dowel-pinned foundation, this setup offers the aggressive character rotary fans love while maintaining the reliability needed for street and track applications.
