Need autox alignment suggestion/specs: 285/35 19" Sq. tires, stock suspension
 

Hey guys,

As you saw from this thread, I have been autox-ing regularly now. I am hoping to do 3 events every month (at least hoping to).

I ended up getting 285/35-19" RE-11 all around sq. setup and I love it. Best decision ever made. So, finally I wanted to get an alignment that will take advantage of the wide REs and give me even quicker time. My suspension is bone stock including all stock sways.

So, what kind of autox friendly alignment do you recommend? I want to stay in street (C Street) class. Remember, I still have to make it to the event driving on regular roads/highways (sometimes in rain) etc. So maybe a spec that works for regular driving and autox? Also keep in mind, this will be my 2nd season. So, I may not be there quite yet. A 5 year old autox PRO may benefit from certain spec vs. me on the same car.

I asked a national driver,"What if I get a front sway, what's alignment should I get?" He suggested try to minimize rear camber/toe (-1.5 camber, 0 toe). In the front, 1/8" total toe out in the front.

Perhaps I need more positive camber/toe in the rear (than above mentioned) with stock front sway? Lets hear your suggestions. Thank you in advance

vh1's alignment specs
 

Here is what I am running on my car for the street. The intent was to get it close to AutoX numbers and livable on the street.

Disclaimer: Haven't run it on the track but feels pretty balanced in the canyons(slight oversteer in the canyons on stock RE050's). Might try going down to -1.5 Deg. on the rear camber as you noted to see what effect it has.

Front Camber: -2.2 Deg.
Front Toe: 0
Front Caster: 5.5 Deg.

Rear Camber: -1.8 Deg.
Rear Toe: 1/16" or 0.01 Deg. Total (1/32" Right + 1/32" Left)

I have swift springs with SPL Front and Rear Camber adjustment and SPC Toe Bolts on the rear.

Hope this helps or gives you a starting point.

AK,

I know on the track zero toe on the back was horrible. Made the rear break loose far to soon. Zero to up front you will love as the steering feels much lighter and easier to turn in.

For rear toe I shot for just under the factory recommended spec. Much much better stays planted now.

When you went square, did you match the rim widths? or stayed with the front stock width?

Thank Vh1. Those are some nice camber. I am not sure if I can do something similar on stock suspension as C Street class (in Autox) do not allow any camber kit/toe bolts etc. This is Stock Suspension spec for 09 Nissan 370Z

http://i576.photobucket.com/albums/s...alignment1.png

http://i576.photobucket.com/albums/s...lalignment.png


Thanks for the input. That's why I wanted to post it here so that I can hear more. I rarely have been doing HPDE lately due to car getting older (almost 85K and the lack of oil cooler). So, I'm pretty much focused on Autox. So, an autox only alignment spec is what I was interested in.

I am def. keeping your suggestion written down. :tup:


Stock front rims (19" Sport Rays). Fits fine, no rub - no issues.

i dont have a issue with zero toe in the back, i ran slight toe in before, then went zero and didnt find the rear any less stable

You can't do much in class.

Dial in minimal camber in the rear. The rear camber curves are aggressive and you want to be flat as possible to get power down. I like a little toe in out back on the Z, but it's personal preference.

You definitely need toe out up front, how much is preference. I kept mine pretty aggressive for autoX, but it makes the car trouble on the highway. 1/8 should be a good starting point.

A good front bar will help reel in the rollover the Z struggles with as well. In my experience the Hotckis is too stiff to use without extremely aggressive camber dialed in, but others have had different experiences.

The square setup should do you well. I'd consider going down in height next round of tires for the gearing advantage, nice to have on the autoX course.

AK

I have a setup simialr to yours. Front swaybar, 275/35/19 square on stock rays and no front camber arms. I did some research and came up with zero toe up front, either zero or 1/8 toe in, in the rear and -1.5 rear camber. I got these numbers from the forum and then found an article on motoiq that suggest the same setup, hope that helps. Also I saw that toe out is good but I dont want the car going all over the road on the hwy. http://www.motoiq.com/MagazineArticl...ing-your-Toe.a

http://www.motoiq.com/MagazineArticl...ve-Camber.aspx

Boy I sure did rear would hook inot a corner then just let go. I did have 2.5 neg camber at the back at the time. Have since changed to just under stock toe and 1.8 neg camber and it is night and day.

what sway bars do you run? yeah that -1.8 is better for the rear. in general id never run over -2 out back since out rear suspension has a very aggressive camber curve under comrpession

Everthing is stock Nismo on the rear. Front is SPL upper control and everything else stock Nismo.

i have a large front sway, so it prolly contributes to a more tame rear even with the rear toe set at zero. These cars seriously like a big front sway

Whats that mean? Please say toe out or toe in and if you have a degree number vs a length number.

yes! Synolimit is here!!!

:tiphat: