S-Tec Motor Sports

S-Tec Motorsports is a high-performance machine shop in Stanton, California, serving customers in Orange County and beyond. With more than a decade of experience, the company provides contract machining and engine work across a range of performance and repair needs. Its services include cylinder-head remanufacturing to factory specifications using modern machinery, multi-angle valve jobs, valve-guide honing, porting and polishing, oversized valves, and high-performance valve springs and retainers. S-Tec also resurfaces cylinder heads to finishes it describes as better than factory.

For engine blocks, the shop offers boring, honing, and surfacing for many engine types, as well as repairs to cracked or damaged cylinders using sleeves and big-bore conversions. One example is its Porsche 996 3.4-liter upgrade, which can use larger sleeves and JE pistons to create a 3.8-liter engine. S-Tec Motorsports also supplies aftermarket engine components, including JE pistons and rings, Carrillo connecting rods, Supertech valve springs, and Manley parts. Its versatility supports both custom performance projects and general contract machine work.