Hi guys, I spent days researching spring rates for skylines (particularly GTT R34s) the general info was that 8/6kg setups were too stiff for the road and many said even too stiff for track...
My car felt way too soft on the track and still too much body roll after doing a larger front swaybar.
I went from 8/5kg to 14/8kg and the car felt amazing and no where near too stiff on track. The car was also lowered 20mm when the springs were changed.
Result was a 1.547 around Gardner Circuit at SMSP which is still slow. If you watch my vids, the car is very slidy which is fun but slow and rear grip is the next step.
https://youtu.be/PjyTZ4dOq0M
Basic info:
Front Tyres 235 Zestine 07R
Rear Tyres Chinese 265s
220rwkw 12 psi
Locked Diff
Drift knuckles (ex drift car)
Shockworks coilovers
Whiteline 24mm F swaybar
Ext front LCAs, basic adj rear arms.
Stock brakes
Bucket Seat, Half Cage and still has climate control.