The Official 370Z Autocross Thread

[JSBZ]

Nice result. Were you running the stock B'stones?

Originally Posted by ChrisSlicks

Had an awesome auto-x this past Saturday. This particular club is one that runs a long course, a little over 100 seconds this week (actually short for them). This is also an anything goes club as far as mods go. There are 2 classes, cars with tires of 140 treadwear rating or above, and everything else.

There were 4 Corvette Z06's, a Viper, a supercharged Exige, supercharged Miata, twin turbo Miata, turboed MR2, and a bunch of other machinery there.

I pulled off a win in the "street tire" class with a 1.5 second gap to 2nd. Got 5th overall (0.2 seconds away from 3rd).

For this event I ran camber control arms and dialed in -2.6 degrees in front and -1.6 in the rear, as well as the Hotchkis sway bars. The car was very responsive and handling was excellent!

[ChrisSlicks]

Originally Posted by JSBZ

Nice result. Were you running the stock B'stones?

I was running the Bridgestone RE-11's in oversized width. 275/30 front, 305/30 rear. I had to water the tires at the end of every run to prevent them from overheating, they fall off quickly when hot.

[JSBZ]

Originally Posted by ChrisSlicks

I was running the Bridgestone RE-11's in oversized width. 275/30 front, 305/30 rear. I had to water the tires at the end of every run to prevent them from overheating, they fall off quickly when hot.

100 sec run is long. I can see the need for cooling the tires. Any rubbing issues?

[ChrisSlicks]

Originally Posted by JSBZ

100 sec run is long. I can see the need for cooling the tires. Any rubbing issues?

We've had courses with 140 second runs, it all depends on how many cones they feel like laying down.

Happy to say no rubbing issues with the camber arms. Only negative about them is that they are heavy (about 2 pounds each) due to being fabricated out of steel, vs the ultra lightweight stock aluminum which are light as a feather. Probably about 50% of the weight is considered unsprung. Very easy to install, 3 bolts. Easy to adjust as long as you don't want to change the caster. I stayed with stock caster so installation was less than 30 minutes per side.