Eagle's Subaru connecting rods are crafted from high - grade 4340 forged steel. They go through a series of strict quality checks including x - raying, magnafluxing, sonic testing, and shot - peening to guarantee top - notch quality and strength. These rods come in weight - matched sets, with each set having a weight difference of just +/- 1 gram from end to end. The STI connecting rods are forged in two pieces in China and then sent to the US for final machining and testing. This process results in a cost - effective yet durable and precise rod. The EJ257 STI rods are equipped with ARP 3/8in 2000 rod bolts, which can handle high power and boost. They have a rod length of 5.137 inches. Note that these connecting rods are not compatible with OEM Subaru pistons. The part number is CRS5137S3D. When installing, torque to 43 ft - lbs and use 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 they are bushed for a full - floating piston pin.
Using these Eagle connecting rods is a great way to upgrade your Subaru engine. When installing, make sure to follow the torque specification of 43 ft - lbs and use only ARP moly lube as stated. This will ensure a proper and secure fit. Remember, these rods won't work with OEM Subaru pistons, so you'll need to use compatible pistons. For maintenance, it's a good idea to check the rods regularly for any signs of wear or damage, especially if you're pushing your engine hard. If you notice any issues like unusual noises or vibrations, have the rods inspected by a professional mechanic. Also, keep the engine well - lubricated to extend the life of the connecting rods. With proper use and care, these connecting rods will serve you well and help your Subaru engine perform at its best.
