Re: dead coil on springs (lotus7)
The way I've seen aftermarket spring companies adjust for small heights like the thickness of wire differences is to just change the free length of the spring another 10mm or so. Using dead coils isn't the way to do it. They're only used to make a flat resting face which is important when the spring is very weak, long, or the load is very heavy. Sometimes there will be two coils at the end to support the top face, especially if the spring is strong.