Rotary Engine Building & Tuning

At Apex Motorsport, rotary performance is our passion. We specialise in rotary engine building, rebuilding, porting, and tuning services for Mazda RX models and custom applications. Whether you're chasing track-day reliability, street power, or competitive performance, our engines are built to exacting standards using proven techniques and premium parts.

- Engine Rebuilds (13B, 13B-REW, 20B, Renesis)
- Street & Race Porting
- Custom Turbo Builds
- ECU Setup & Tuning

Built with precision. Powered by passion. Proven on the track.

ROTARY EXPERTS, ENGINEERED FOR PERFORMANCE

At Apex Motorsport, we live and breathe rotary engines. Our team has extensive experience working with Mazda RX-7s, RX-8s, and rotary-powered conversions, and we’ve built engines for street use, drift, drag, and endurance racing. We combine in-depth knowledge of Wankel engine architecture with a workshop fully equipped for precision machining, cleaning, balancing, and assembly.

Every engine we build is treated like it’s going into our own car - with uncompromising attention to detail and the use of high-performance components from trusted brands.

SERVICES

FULL ROTARY ENGINE REBUILDS

We offer professional rotary engine rebuilds using OEM or upgraded internals. Every rebuild includes:

Full disassembly, cleaning, and inspection
Precision apex seal and side seal clearancing
Rotor balancing
New seals, springs, and gaskets
Optional stud kits, oil system upgrades, and coolant mods

SERVICES

STREET PORTING, BRIDGE PORTING, PERIPHERAL PORTING

Want more power and responsiveness? We offer custom porting solutions for your performance goals. From mild street ports to aggressive bridge and peripheral ports, we shape every port by hand and tune for drivability and powerband.

SERVICES

20B THREE-ROTOR BUILDS

Looking for something truly unique? We offer complete 3-rotor 20B builds, ideal for high-horsepower street or race applications. These builds include all necessary clearancing, balancing, and machining to run reliably at high RPM and boost.

SERVICES

ROTARY ENGINE DIAGNOSTICS & REPAIRS

Compression issues? Hard starting? Overheating? We diagnose and repair all common rotary engine problems with proper testing tools, including rotary-specific compression testing.

SERVICES

TURBOCHARGER & INDUCTION UPGRADES

We supply and fit single turbo conversions, V-mount intercooler setups, and custom intake manifolds to suit your build. Whether you're running a street 400hp setup or chasing 800hp+ drag power, we can spec and install the right solution.

SERVICES

ECU SETUP & TUNING

We offer ECU installation and mapping for rotary platforms using Haltech, Link, Motec, and other standalone systems. Every tune is dialed in on a dyno, ensuring safe AFRs, optimized ignition timing, and strong, smooth power delivery.