How to Install Spirolox Retaining Rings - Engine Building 101

Spirolox--something referred to as spiral retaining rings--are used to secure pistons and wrist pins to connecting rods. Using Spirolox on each side of the wrist pins is a popular method on high performance and racing engines. Unfortunately, installing Spirolox can be a challenge--at least initially. Spirolox have sharp edges, and it can be a time-consuming, and even painful, task to get them installed properly without the right approach. In this video, we'll take you through the process for installing spiral retaining rings and share some helpful tips and tricks. Once the job is done, you'll have peace of mind as Spriolox retaining rings are one of the most effective (and cost-effective, too) ways to keep your wrist pins in place. For our Summit Gen. III LS engine build, we used Summit Pro LS pistons, which utilize the Gen. III's full floating pin design. That's why we opted for a double Spirolox to compete the piston and rod assembly. Using a rod vise, along with the small screwdriver, we're able get our Spirolox in place. However, there are a few techniques to make the job just a little bit easier. Watch the video to learn more!