How to adjust Corvette Coilovers

Rings are aluminum and spanner wrenches are steel, hence wrenches do not scratch. You can however scratch the rings if adjusted incorrectly.

1. figure out the height of your springs (mine are approximately 7 & 7/8th”)
2. If springs were touched then you need to expand them. It’s easy to tell, there should not be scratches on the metal rings from raising under pressure. You can unlock the bottom ring then loosen the top ring to lower the spring until it’s loose. Then tighten slightly. I tightened my springs to 7.75″ height. This keeps them taught but no preload.
3. The coilover is adjusted by raising/lowering the threaded pipe (not springs). Unlock the steel perch (bottom part of damper that threaded pipe goes in to) by loosening the third/bottom ring and raise it up. You will adjust by turning the two locked rings under the spring (top one). Since there is no preload, it should turn very easily and you won’t scratch the rings.
Tip: You can double stack the wrenches which gives you more torque to adjust height.
4. Using a tape measure, measure from the floor to the inner lip of each fender well. You are looking for 26.5″ on the front wheels and 27″ for the rear. After each adjustment you will need to let the car suspension settle before you readjust.
5. Expect it to take some time if doing it by yourself as you will most likely need to adjust every corner several times. Make sure you lock the rings and torque the lug nuts properly.
Tip: You can determine your weight drop yourself with a measuring tape (metal retractable) and a business card. Open the door and measure from the floor to the X on the scuff plates. Then sit in it and measure again. Use a business card sticking outward to line up with the tape. Pinch the tape where the business card touches and read measurements. Make sure you measured at the same point the second time. This isn’t as good as corner weight but pretty damn good for free and doing it yourself.