Using Honda springs for coil overs

[Uzelac]

There is a problem with cutting springs, and that's travel you end up with.
Cut 4 coils and you will end up in 20cm free length region, and that leaves around 12cm of travel until bind from free length.
Installed, 8kg/mm spring will compress 3+cm so you have ~9cm until coil bind.
For me it sounds you are missing few cm.

BTW. there are various TRD springs for AE86. 5-10 kg/mm for the front and 4.3-9kg/mm for rear.
TRD calculates with loading rate of 210kg for front and 190kg for rear, per wheel/spring. That ends at 800kg for whole car. Most of our cars are ~900kg so i use 250kg for front and 225kg for rear.

p.s. Front short stroke shocks on AE86 have 160+mm of travel.