Originally posted by JeffYoung+Dec 17 2005, 01:41 PM-->
<!--QuoteBegin-Joe Harlan
@Dec 17 2005, 01:41 AM
Thanks guys. Ty, are you in a 260? What spring rates?
Joe, here is how it "feels" to me:
1. During the first 3-4 laps of a session/race, entry understeer was severe, mid corner understeer moderate, and a bit loose on exit. Note that when the NISMO diff is "cold" the car is impossible to push by hand with the wheel turned, just like a locked diff, leading me to believe the diff is indeed too tight.
I would try different corner entry speeds and am convinced that it was not too much speed on entry. Additionally, during mid corner throttle on, the car would push, but I could get the nose to tuck and turn with a lift, which of course killed exit speed.
What confuses this some is I am used to the TR8, which has an 85" wheelbase, turns (or spins) on a dime (which can be good or bad), and oversteers naturally because of the torque from mid-corner on. Maybe I'm expecting the Z to behave the same and overeacting when it doesn't, but the "nose slide" the car has just doesn't feel right.
2. Things get better over the course of a session as the diff heats up. But it will push the nose more than I like even when the tires and rear end are up to operating temperature.
I'll drop the springs down some I guess and see what happens.
3. Is your issue with the Quaife the fact that if you lift a wheel you lose the torque bias? I have a Quaife in the TR8, and you have to watch the curbs in the slow corners, but other than that, it seems to work pretty well.
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