I see a heavy duty spring compressor at Princess Auto (Canada), sale for $99, normally $150. A pair of tubular "jacks" that fit onto side of spring, with a centred screw in each to compress them. Various safety features to clamp the spring, prevent slip, etc. There's a third "arc" piece that I have no idea how'd to fit, and why?
Anyway I notice there's a rating on the box. Rated at 1200 lbs. I'd assume that's 1200 per pair of jacks put into action on one spring. So a spring pressure of 1200. I don't often see ratings like this for various compressors.
These ones are the best looking (solid) generic spring compressors, way more engineering to them than the simple "strut" compressor screws you see everywhere. I'll try to grab a picture.
Anybody comment on spring rating of pounds for a w124 diesel front spring?
Heavy Duty Coil Spring Compressor | Princess Auto
Here's a pix: