Front Sway bar? LSD?? - 986 Forum - The Community for Porsche Boxster & Cayman Owners

Mrmaddbrad · 09-24-2011, 10:01 PM

Hey everyone!! A few quick questions for those of you running your boxsters in C-stock!! Do people run bigger front sway bars?? Is it necessary or does it just give you to much under-steer??

Anndd on R-compounds, does anyone notice the lack of a limited slip? Or does the open differential do just fine?

j.fro · 09-25-2011, 02:36 AM

Over the winter I had my trans rebuilt and I added a Guard Torque-biasing diff. The change is significant. In a straight line, both wheels hook and the car accelerates MUCH better. Around corners, the rear end is predictable and controllable. It's much easier to manage throttle steer and rotate the car, and it also seems easier to avoid pushing the front.

Mrmaddbrad · 09-25-2011, 09:28 AM

Hmm alright! Cool! Seems like its worth it then! At least if i'm dying to spend mass amounts of money XD

Mind me asking how much that rebuild cost you?

blue2000s · 09-25-2011, 03:01 PM

I've only been on a track a couple of times in my 2000S. But I really didn't miss the limited slip differential. It depends on the track and skill level, of course, but I never had trouble with getting the power down. Especially with hot tires. I'd actually like to have it, but I don't think I need it.

I'm on the M030 suspension. I think it does a nice job of giving the car very neutral handling.

j.fro · 09-27-2011, 03:59 AM

The rebuild plus the diff was $4000. In hindsight, I overpaid. I believe you can buy a rebuilt trans directly from Guard for $3600 with the diff. Whatever you do, get the G-Box detent and swap it for the stock detent. It's $100, an easy job, and the trans will not pop out of second or third gear ever again.

jsceash · 09-27-2011, 03:16 PM

I believe the mod you are talking about will put you into a street prepared class. The limited slip differential is not an allowed replacement in stock. Sway bars are allowed to be changed if they are stock on a car of the same year or older and the part or vehicle don't have to be modified to install it.

Mrmaddbrad · 09-27-2011, 08:43 PM

Quote:

Originally Posted by jsceash

I believe the mod you are talking about will put you into a street prepared class. The limited slip differential is not an allowed replacement in stock. Sway bars are allowed to be changed if they are stock on a car of the same year or older and the part or vehicle don't have to be modified to install it.

Haha no no no. According to SCCA Solo rules, front sway bars may be removed or replaced without limit as long as it has the same mounting point, but rear sway bar may not be touched. And STR (Street Touring Roadster), and all ST classes for that matter, allow for the use of ANY differential. :P

Yay for spending way to much time with a rule book XD