Connecting Rods STD Mazda 1970-1979 NA, VC 1586-1769cc ACL ACL-4B1151-STD

STD bushings Mazda 1970-1979 NA, VC 1586-1769cc ACL ACL Race bearings are designed to work in the most extreme conditions and the most strenuous engines. Thanks to many years of experience in the production of bushings, each set is perfectly matched to the engine. The bushing adjusts to the deformation generated at high RPM and helps in the formation of hydrodynamic oil films. This technology, combined with the advanced geometry of the bushings, makes them ideal for heavily stressed engines. Most bushings are also available in several other dimensions: STDX -0.025 mm (looser than nominal) STD +0.000 mm (nominal) +0.025 mm (tighter than nominal) +0.25 mm (first shaft grinding) +0.50 mm (second shaft grinding)