STU Classifications

[deadlydave]

With the brake upgrade and such, The Baja-Turbo is no longer fit for Autocross duty in stock class.

So, my target is STU. Is there anything I should watch out for? I don't want to get forced into SM...

Is the 245 width tire restriction for all AWD vehicles still in effect for 2008. (I only have the 2007 Rulebook). Is the 7.5" Wheel/Rim width restriction still in effect? Would an exhaust bypass throw me out of STU?

[SammyDaFish]

what group puts on the autocross events you attend? You're up near Troy right? I'd like to take the wagon for a spin in an autocross. I haven't autocrossed in years.

[deadlydave]

what group puts on the autocross events you attend? You're up near Troy right? I'd like to take the wagon for a spin in an autocross. I haven't autocrossed in years.

It's the Mohawk-Hudson Valley SCCA chapter. They have recently switched to running in a large parking lot in Albany/Bethlehem. Sometimes the events are as far north as Adirondack Community college. Come on up.

[Mr. Sociable]

Ok. I may never have raced before, but I've been (trying) to do my research. From my Autocrossing Performance Handbook for STU it says:

SCCA Allowed Modifications

Suspension
Aftermarket Shocks w/ more than 2 external adj. - Yes
Any shock absorber bushing (not offset) - Yes
Aftermarket shocks w/ external resivors - Yes
Springs - Yes
Front Sway Bar - Yes
Rear Sway Bar - Yes
Strut Tower Bars - Yes
Tie Bars - Yes
Aftermarket suspension bushings - Yes
Crash Bolts - Yes
Camber Plates - Yes
Traction Bars, torque arms - Yes
Panhard Bar - Yes
Camber Kits - Yes
Subframe connectors - No

Wheels and Tires
Street Tires (treadwear rating 140 or higher) - Yes (up to 245 width for AWD)
DOT-approved R-compound tires - No
Racing Slicks - No
Wheels, stock diameter, width, and offset +/-0.25" - Yes
Wheels, any diameter - Yes

Engine
Alternate Air Filter - Yes
Alternate Air intake - Yes
Alternate throttle body - No
Intake Manifold - No
Header(s) - Yes
Catalytic Converter - Yes
Exhaust (cat back) - Yes
ECU - Yes (no boost changes)
VTEC controller - Yes
Short Throw Shifter - Yes
Accessory Pulleys - Yes
Cams - No
Cam gears - No
Pistons - No
Valvetrain - No
Connexting Rods - No
Crankshaft - No
Headwork - No
Motor Mounts - Yes
Spark plugs and wires - Yes
Replace intercooler - No
Add Intercooler - No
Replace/add turbo - No
Accusump-type system - No
Alternate Fuel Pump - No
Replace Engine - No

Brakes
Aftermarket brake pads/shoes - Yes
Stock size/type rotors or drums - Yes
Cross Drilled/slotted rotors - Yes
Replace drums with rotors/calipers - NO ANSWER
Replace stock rotors and/or calipers with larger units - Yes
DOT-Approved replacement brake lines - Yes
Addition of cooling ducts - NO ANSWER
Speedbleeders or alternate bleeder fittings - Yes

Body Work
Do I really have to type this out? It's super long.

Transmission
Add/replace LSD - Yes
Replace transmission - No
Gears - No
Differential - No
Driveshaft - No
Clutch - No
Flywheel - No

Other
Keep your stock size/shape/voltage battery and leave your ABS and power steering.



Now its a copyright 2007 book so I don't know if those are the 2008 rules or not. I don't even know if that helps you in any way, but thats what info I can provide. Sorry if you didn't need all that. :-? [/list]

[deadlydave]

Thanks for the help! That looks correct--i checked in the scca 2008 rulebook.

However, due to the addition of a new hood in the spring, I will be bumped to Street Mod. Whereupon, I will be spanked.

[rougeben83]

Yeah, the only thing you have to watch out for is the new catalytic converter rules in STU/STX.

I think you can't run an "aftermarket cat" now or something to that effect. A few guys had to ditch their catted DP's because of it (I scored a Helix catted DP for $120 from an autox friend of mine because of it :D)