SCCAForums

No, he posted further down, that they used 2016 GT3 factory settings. Haven't seen any specific to the 2018's yet.

Best Regards,
Dave

orthojoe

Thanks. Curious about toe and caster settings too

SCCAForums

My car gets aligned Monday... I'll try to post before and after as well.

Best Regards,
Dave

porscheflat6

Mr. Turtles

Hams955

My settings:



Running a little more rear toe than I did on my .1. Balance between track/street.

- Chris.

orthojoe

That looks like a good setup. I assume that you used lca shims to get those numbers? Stock thrust arm bushings?

Did you see what the factory alignment was on your car?

Hams955

Used 13mm total shims on the LCA's (inclusive of the 7mm lamp height adjuster) to get to this setting. Still has full engagement on the the threads with the hardened washers.

Used the rennline thrust arm puck that still has rubber like OEM style but a little harder than OEM spec. Not quite a full billet piece but not soft OEM either.

I do have the before settings and the after settings on the print out in the car. I will get it and scan for you. My tech who does all the GT3 setups indicated that the .2 was around -1.3 all around but all the cars he'd set up have seen higher numbers like -1.6 to -1.7 from the factory; but still within spec.

- Chris.

orthojoe

Thanks, man.

Mvez

I may have to get a pair of these little guys. I assume you just install them clocked at the same angle the thrust arm/rod attaches to the control arm so you can use the off center hole to retain 9-10ish caster? I can't remember how the stock 2-hole 997 ones were oriented.

Are washers/spacer needed?

Mr. Turtles

Just wondering if I missed something, is there an important difference between the Rennline and Tarret thrust arm bushings?

Hams955

Tarett piece: http://www.tarett.com/items/996-997-...a01-detail.htm

Rennline piece I like to use: http://www.rennline.com/HD-Thrust-Ar...info/S-05028P/

The latter piece is a more street friendly version and won't add measurable harshness to your car. The .2 is so refined on ride I chose to use the Rennline piece over the more widely used Tarett billet piece.

- Chris.

Mvez

Can you let me know how your oriented the bushings in the control arms (and if they required the spacers). I assume you positioned the eccentric hole angled toward the thrust arm (running in the same angle), so that it would actually pull caster out?

So basically opposite of 997 GT3 arms that had the offset hole positioned away to increase caster for the cup cars (or the equivalent of if you swapped left to right sides).

Hams955

Check your inbox sir.

- Chris.

Hams955

I was visiting with my tech today as we are installing an Akrapovic race setup on my car with headers. We looked up the PET for the specs on alignment for the '18 model.

Their alignment machine has not updated with '18 settings yet but the PET has them listed:



Kind regards,

Chris.