Reminder. The initial harshness of the original front suspension setup is due to the rebound spring and main spring being compressed together at ride height, their stiffnesses add together resulting in a very stiff initial spring rate. That is what causes the nose of the cars to bob up and down, that is the car bouncing on the front tyres at around 3 Hz.
To get rid of that initial stiffness and resulting harshness to thus get the front suspension to actually work the rebound spring must be only just kissing the slider/hub at ride height, you must be able to turn it by hand. This requires a shorter main spring and/or a shorter rebound spring or go for a main spring supported on adjustable spring seats.
Declared interest - Director of SSL, product range includes the SSL 5L rear suspension, SSL RS front suspension and alterative springs and dampers.
Regards Peter J Ballard.
http://www.suspensionsupplies.co.uk/
