1. Thoroughly clean all the carbon off of the valve before you install. Not that you have to do this, but you have the valves out and there is performance to be gained here depending on how bad your valves are. The easiest way to clean the valves is with a wire brush wheel. Below are some before and after pictures of cleaning up the exhaust valves and the wire brush wheellused. 2. Slide the valve up through the valve guide and through the valve seal. 3. Place the valve spring around the valve guide. Then place the retainer on top of the spring. 4. Compress the spring with your compressing tool till you can clearly see the tip of the valve stem 5. Seat both retaining clips with the tapered end facing down around the valve stem and slowly release the spring. As you release the spring, make sure that the retaining clips seat correctly around the valve stem and seat well against the retainer.