Professional Rotary Engine Rebuilding Service

Whether you're restoring a daily driver, building a spirited weekend car, or preparing an engine for the demands of endurance racing, the Rotary Engine Workshop provides precision rebuilding services tailored to your specific goals.

Simply ship your engine to us, and we'll perform a complete inspection, carefully measure every reusable component, and rebuild your engine using proven techniques developed through decades of hands-on rotary experience. Every build receives meticulous attention to detail, with reliability, performance, and longevity guiding every decision.

We work with genuine Mazda OEM components. Premium aftermarket parts from the industry's most respected manufacturers can be substituted upon request. 

Before assembly, you'll receive recommendations for any replacement parts or performance upgrades that best suit your intended application and budget.

From stock restorations to high-performance builds, each engine is assembled with the same commitment to precision craftsmanship and quality. Our goal is simple: deliver an engine you can install with confidence and enjoy for years to come.

Whether your Mazda is destined for the daily commute, canyon roads, autocross, road racing, endurance competition, or a dedicated race program, we're committed to building an engine that's engineered to perform and built to last.

12A & 13B - Labor Only $3,750 

20B - Labor Only $4,750

No Extra Charge Bearing Replacements

Inquire For Porting Charges

Contact us today at 209-770-5624 to discuss your project, performance goals, and shipping arrangements.