Eagle's Subaru connecting rods are crafted from high - quality 4340 forged steel. They go through a series of strict tests including x - raying, magnafluxing, sonic testing, and shot - peening, guaranteeing top - notch quality and strength. These rods come in weight - matched sets with an end - to - end weight difference of just +/- 1 gram. The STI rods are forged in two pieces in China and then sent to the US for final machining and testing, offering a cost - effective yet durable and precise solution. The EJ257 STI rods are equipped with ARP 3/8in 2000 rod bolts, providing excellent power - handling and boosting capabilities. With a rod length of 5.137in, they are a great choice for your Subaru engine. Note that these connecting rods are not compatible with OEM Subaru pistons. Part number is CRS5137S3D. Torque them to 43 ft - lbs using only ARP moly lube. Key features include 3/8' ARP 2000 bolts, forged 4340 steel material, a center - to - center length of 5.137', a pin size of 0.906', a pin end width of 0.842', a rod journal of 2.047', a housing bore of 2.165', a big end width of 0.842', a typical weight of 530g, and being bushed for a full - floating piston pin.
Using these Eagle connecting rods in your Subaru engine is a straightforward process. First, make sure you've got the right engine model as these rods don't fit OEM Subaru pistons. When installing, use only ARP moly lube and torque the bolts to 43 ft - lbs. This will ensure a proper and secure fit. For maintenance, regularly check the bolts for tightness. If you notice any unusual noises or vibrations from your engine, it might be a sign to inspect the rods. Keep the engine clean to prevent dirt and debris from causing wear on the rods. Overall, these rods are built to last, but proper care will help them perform at their best for a long time.
