Hot Hone System

Our Hot Hone System was developed jointly with Sunnen Products to give high‑performance engine builders tighter control over ring seal, power, and repeatability from build to build. By honing blocks at operating-like temperatures, you match bore geometry to real running conditions instead of cold-shop dimensions.

In practice, that means more stable ring contact, better blowby control, and a measurable increase in usable horsepower without exotic hardware changes. Builders who use this system see reduced scatter in leak-down, compression, and oil consumption across engines that share the same design.

The system integrates into existing honing workflows, so your operators can maintain throughput while gaining data-driven control of bore size, shape, and taper at temperature. For racing, performance street, and specialty engines, the payoff is straightforward: higher, more repeatable power with fewer "mystery" outliers on the dyno.