Since 1963, Carrillo is recognized as the preeminent custom connecting rod manufacturer in the world. Carrillo has provided custom and prototype connecting rods to virtually every major automotive and motorcycle venue, most notably to the high performance and speed equipment industry. Whether it is a development engine or a modified existing engine, when nothing but the finest, most accurate, proven part is needed, Carrillo has earned the reputation of simply being the best.

Carrillo has been working to improve the availability of our products to the entire motorsports industry. In an effort to allow more access to Carrillo’s unsurpassed attention to detail, exceptional processing, and proprietary materials, we increased our standard stocking inventory of parts.

In addition to our well known H beam connecting rod, we offer an A beam configuration as well. The A beam configuration is available in a Pro-A, Pro-A-Ltd and Pro-Super A (SA) and Heavy Duty configurations.

Typically, the Pro-A beam configuration is well suited for less demanding, more economical, high-performance, aftermarket applications. Pro-A-Ltd connecting rods are designed for limited and restricted motor applications. And the Carrillo Pro-Super-A (SA) bridges the gap between the Pro-H and Pro-A applications.

All versions of Pro-H and A are stocking parts, which are limited to the more popular dimensions and part numbers. To decide which beam type is best suited for your application, please call our Technical Sales staff. Together we can build a rod that is best suited for your application and needs.

Rods

Carrillo uses proprietary chrome, nickel, moly, vanadium alloy which meets all VAR (vacuum arc re-melt ASTM standards). The heat is validated, both by the supplier and an independent metallurgist whom confirm the desired physical and chemical properties of steel.

All heat treat processes are via a mar-aged operation, resulting in UTS of 195,000 with a yield of 182,000 while maintaining the critical elements of low notch-sensitivity and ductility.

All Carrillo connecting rods are manufactured from an oversized forging resulting in the proper grainflow as well as the surface removal of any potential inclusions or surface conversions generated by the forging process. All critical CNC machines at Carrillo are equipped with probing to accurately validate dimensional integrity. In the production process each part is magnafluxed at least twice, further each piece is Rockwell tested to validate the heat treat procedure. A final shotpeen operation completes the part.

Back to top

Carrillo employs fasteners jointly designed by Carrillo. We employ two different materials: H-11 tool steel (220,000 UTS) as well as Multiphase TM (285,000 UTS). All our fasteners employ a patented thread design as well as the highest dimensional integrity in the industry. Each lot is sample tested destructively for both ultimate tensile strength as well as fatigue.

The CARRILLO connecting rod is a precision, high strength, quality connecting rod, which when properly installed and maintained, will perform flawlessly in today’s racing and high performance internal combustion engines. We would like to offer some suggestions and specifications that should be helpful in your installation.