Ran SCCA STU moving to CAM need suspension help

[WKT]

Ran my first SCCA Autocross today, ran STU class. I need some help with what class I should be in and what mods are legal. I need to balance out the front and rear grip. Need to help the understeer, May need sway bars and possible spring change to start with?

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[Static_LV]

You can do a lot in STU. You can do everything in Street which would allow a front or rear sway bar swap, plus a lot more. You are way over the tire allowances for STU on your rears, as the limit is 285.

You can find all the rules here: http://cdn.growassets.net/user_file...street_touring_category_online.pdf?1432652724

 

[WKT]

Any idea what class they should have put me in?

 

[Static_LV]

Probably one of the CAM classes or ESP.

 

[Norm Peterson]

CAM, or CAM-C (contemporary) if broken up into sub-classes.

The Invo is a street tire with >200 treadwear rating. ESP allows much stickier DOT-R compound tires, so you'd be at a pretty big disadvantage running Invos there.


Norm

 

[WKT]

Thanks Norm and Static_LV, I'll go back and read thru CAM rules.

 

[WKT]

[MENTION=10893]David@Steeda[/MENTION] David I need some help on which way to go with the suspension.

 

[David@Steeda]

[MENTION=10893]David@Steeda[/MENTION] David I need some help on which way to go with the suspension.

pm incoming!

 

[jdub.csu]

I would race CAMC with your mods

 

[pinero61]

Sorry to derail, but how do you like running 325's?

 

[WKT]

325's, no rubbing, really good bite to be a dusty parking lot, if I got real aggressive I could hang the back end out. My car is a daily driver that will get autocrossed 4-6 times a year, so I'm very pleased with these tires, ride very good, have done very well in pouring rain and did well with me behind the wheel autocrossing.

 

[WKT]

Thanks [MENTION=10893]David@Steeda[/MENTION] !! I ordered my front and rear Steeda sway bars today, hopefully will come in Saturday. Next will be the G-Trac brace and rear subframe support brace.

 

[David@Steeda]

Thanks [MENTION=10893]David@Steeda[/MENTION] !! I ordered my front and rear Steeda sway bars today, hopefully will come in Saturday. Next will be the G-Trac brace and rear subframe support brace.

Awesome news, bud!! Happy to have you on board! We'll make sure we ship those out asap to you

 

[WKT]

Using the GT350 as a bench mark, how does an S550 compare handling wise with Steeda's sway bars, Ultralite linear springs, Strut tower brace and G-trac brace and equal tires with the GT350. I know the Trac pack and the R have Magna ride so that isn't a fair comparison.

 

[Static_LV]

The cars are so different to begin with that this is a very difficult question to answer.
Track, weight, active suspension, suspension geometry, and chassis stiffening are all in the GT350's favor on this one. Given a proper setup, a GT PP can probably get close enough that only a really good driver is going to be able to squeeze that difference.

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