Track Alignment

AlWakRa

Do you have true coilover setup at the back?

The front camber looks good for slicks, I would prefer less at the rear. As for extreme summer tires, I got luck with around -2.7 front camber and -2.0 rear, 0 or a hair toe out front with stock rear toe in value, and around +6 caster.

About rear sliding, maybe too much rear toe in.

__________________

Rusty

You want the tire temps even across the tire if possible. I would use this to set your alignment to. But if you run on a different track. The alignment might need changed to suit.

Slick can run a little more camber, but not much. Dial in your caster to +7, more if you can get away with it.

The Z has a weird camber curve built into it's rear suspension. The more it squats. The more camber it has. It's not linear. My 2 cents. Anything more then -2 camber is a waste unless you tire temps are even across.

Also, you can play around with tire pressure too.

Get a big 3 ring binder and keep track of all the changes you make. Keep notes on everything.

__________________

浪人 - 殺し屋
"The Difficult Anytime, The Impossible By Appointment Only"
http://www.the370z.com/members-370z-...o-journal.html

Mn23

I have divorced setup in the rear, will lessen the camber in the rear to around -2 first.

Thanks Rusty, I’m currently at +6 caster, is there any cons for going +7?

Rusty

No.

__________________

浪人 - 殺し屋
"The Difficult Anytime, The Impossible By Appointment Only"
http://www.the370z.com/members-370z-...o-journal.html

AlWakRa

So the rears aren't that hard, it may even be on the soft side, as most divorced setups focused on track have an equal or stiffer rear spring rates compared to fronts. I would suspect camber + toe in. I used to have a lot of toe in rear, around 0.9 total toe in, and the rears were sketchy and love to slide even with semi-slicks, getting it down to stock toe in value made it very sticky even with street tires.

Second guess would be very low rear height which mess the rear geometry.

__________________

Rusty

People don't realize this when they lower the rear. The rear camber curve is not linear.

__________________

浪人 - 殺し屋
"The Difficult Anytime, The Impossible By Appointment Only"
http://www.the370z.com/members-370z-...o-journal.html

Mn23

Yes I am planning to raise the height a bit as it is quite low. My spring rates are quite stiff at 20k front and 18k rear. Should I set the rears height a bit higher than the fronts?

My rear slicks were somehow sliding a lot at the last track day, I thought the tires were done. My rear toe is at 0.07