If the setup on my 94 Ace (No 44) was typical of cars leaving the factory the front springs were coil bound long before hitting the bump stops causing the suspension to “crash” driving on all but the smoothest roads (not easy to find in these days of prolific potholes!). Matters were made worse by the ride height, which was too low. Therefore to commission new springs using data from the existing ones will not sort the problems.
Because the steering and ride on my car was so awful I set about systematically going through steering and suspension geometries, making improvements where possible. Changes to suspension included relocating front and rear dampers, manufacture of longer stroke Koni’s, spring spacers to raise rear suspension and new front springs supplied by Coil Springs (1989) Ltd.
I don’t recall exactly the data Saturn Works needed to make the new springs, because this all happened a long time ago. However, I don’t remember them requiring anything particularly technical - I think it was outside diameter, free length and “compressed” length when at normal ride height.
www.coilsprings.co.uk coilsprings@saturnworks.fsnet.co.uk