Fatigue is the major cause of connecting rod failure. At Carrillo Industries, we use proprietary steel, manufactured and forged to our own custom specifications. After experimenting with virtually every other reasonable material, we have found this chromium / nickel / vanadium / molybdenum FORGED alloy to be the best product to meet our stringent requirements for strength and durability.
Our connecting rods are fully machined to guarantee the removal of all surface imperfections in the forging. After heat treatment, each connecting rod is 100% magnaflux inspected and hardness checked, then machined to final size. Each set of rods is balanced and then shot peened to achieve the ultimate in strength and fatigue properties.
All Eagle "ESP" Connecting Rods are manufactured from a TWO-PIECE FORGING. The forging process forces the grain into the shape of a connecting rod, resulting in a superior fatigue life. The rod cap is forged separately so that the grain runs perpendicular to the load forces, which strengthens the connecting rod. Many aftermarket connecting rods are manufactured from 4340 steel. 4340 specs allow a range of different materials to achieve the desired results. Although it is a more expensive process, all Eagle "ESP" 3-D connecting rods also include higher content of nickel & chrome, which increases the strength & fatigue life without making the connecting rod brittle.
Extensive testing has proven Eagle's two-piece forging superior to any one-piece forging on the market! All Eagle "ESP" Rods are clearly identified. Proper rod bolt torque is vital to connecting rod life. A rod bolt fastner is without question the highest stressed fastener in the engine. The big end bore of the connecting rod is a stressed bore in much the same way as cylinders are on a block. It is equally important to torque properly to provide proper strength & to insure the big end of the rod sizing is correct. Improper torque will result in premature rod failure!
Pauter Rods has years of hands-on experience working with rods of all shapes and materials. Through different types of racing-related abuse, and the resulting design successes (and failures), PAUTER has acquired a fairly comprehensive file on just what works - and what doesn't - on the subject of high performance connecting rods. From this body of knowledge they’ve selected and incorporated elements into what they think a great rod should be.
PAUTER RODS features:
E4340 vacuum melt chrome moly forging, heat-treated to Rockwell C36
All surfaces 100% CNC machined, and shot peened for stress relief
Pauter 220,000 psi tensile strength MSP220 steel, J-formed, rolled thread racing rod bolts
Aluminum-bronze wrist pin bushings
EDM pressure-fed oiling to pin (available at extra cost.)
Custom pin diameters and center-to-center rod lengths
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