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214 Posts
Discussion Starter · #1 ·
Just wanted to find out if anyone else here does any autocrossing. Share your stories or tech talk, either way just thought i'd make a thread about it since i haven't seen one on here.

With the box, last year was my first season. 6 wins, 2 losses. I lost two (events) due to they had the track laid out with a pretty long straight away, killed my times.

214 Posts
Discussion Starter · #3 ·
Well, basically autocross is usually set up at a set track, or used with cones. Its a track set up for cornering, handling and no matter what car you are using, its depends on drivers skill. I'm not very good at explaining, but its basically a smaller version of a road course.

As to websites, you could go to and just search for Autocross, or autocross events, pictures, which ever you are requesting.

Heres a quote off a website for general rules with classes:
As a rough guide, if your car has modifications beyond this list it is not eligible for Stock Category:
Anything available on the exact model and year of your car as standard or optional equipment, as installed on the factory assembly line (nothing available only dealer-installed is allowed), plus
Standard OEM identical replacement parts
Accessories, gauges, appearance, comfort, and convenience items (not replacement driver's seat, though) that basically don't help
Added roll bar or roll cage to spec (not required, though)
Driver harness (no cutting seats to install, though)
Trailer hitch and/or tow bar mountings
Any wheel of diameter and width identical to a stock or factory optional wheel, offset within +- 0.25 inch
Most street legal tires that will fit the mounted wheels and stock bodywork
Any shock absorber of the same type and mounting as original; no change to standard spring mountings is allowed; suspension geometry may not be altered; gas or hydraulic shocks are permitted
Any brake linings; pre-1992 cars may use solid/braided metal brake lines.
Any front anti-roll bar (no change to stock/optional rear anti-roll bar, if present)
Manufacturer specified ignition settings only
Any replacement air filter element (or removal of air filter element); no plumbing changes, however
Engine bored no more than .020"; no balancing or porting/polishing of head
Replacement of any part of the exhaust system past the catalytic converter (if quiet)
Any oil filter
Added clutch scattershield
Street Touring - S
If your car is a normally aspirated sedan (four seats, four factory seatbelts, not sports-car derived) of 3.1 Liters or less, or one of a few small turbocharged cars specified in the rules, and perhaps prepared further than allowed in Stock Category, it may be eligible for one of the Street Touring Classes. Street Touring - S is an SCCA National class, but Street Touring-R is an optional Regional only class. Street Touring allows anything allowed in Stock, plus (roughly) these modifications:
Any shocks, struts, and springs, using original attachment points
Any sway bars
Any wheels up to 7.5" in width that fit over stock brakes
Tires up to and including a width of 225, with a treadwear rating of 140 or greater.
Strut bars/braces as allowed in Street Prepared.
Exhaust system downstream of catalytic converter(s)
Short throw shift kits
Spoilers, body kits, rear wings, etc.
Pedal kits and other interior cosmetic accessories
Alternate brakes pads and linings
Any fully padded and upholstered front seats with reclining seat backs
Removal of factory trim (rub strips, emblems)
Alternate steering wheels of any diameter, otherwise meeting Stock rules
Cross drilled and/or slotted brake rotors
Alternate air cleaner enclosures
No limited slip differentials except factory viscous coupler type units
Stock brake calipers/drums
Fenders may not be cut or flared (but specific modifications for tires OK)
Emission-legal headers
Emission legal modifications to Engine management system, either electronic or mehanical, but not both.
Engine and transmission must remain unmodified, including emissions equipment
Street Touring - 2
This is a regional class implemented in San Francisco and other places, not a National class. Same limitations as Street Touring - S, but generally allows 2-seater sports cars cars and 2 + 2 sports-car derivatives.

Street Touring - X
Same limitations as Street Touring - S, but generally allows cars up to 5 liters or 2 liters turbo- or supercharged, with Limited Slip Differential, and certain other extensions.

Street Touring - U
Same limitations as Street Touring - X, but generally allows cars of unlimited displacement , or up to 3.1 liters turbo- or supercharged, with unrestricted wheel width, tire width up to 275 (RWD) or 245 (AWD), .

Street Modified
Street Modified is a pretty free-for-all class that is a full National class since 2002. For streetable sedans, expands eligible vehicles and modifications above Street Touring, above Steet Prepared, and perhaps even above Prepared category.
All Street Prepared modifications are allowed, plus
Unrestricted modification of engine, drive train, and suspension, and some other modifications, as long as the car uses highway fuels."

Some have more classes, usually all events nation wide guy by a similar guide to determine what class you are. Depending on how long the event is scheduled to last, you get anywhere from 3 to 5 runs. If its an official event, at the end of the day they will add up times and see who came in 1-3rd place per class. Sometimes you win something, sometimes you don't just depends on whos hosting the event.

214 Posts
Discussion Starter · #4 ·
Also, any light weight body parts such as carbon fiber, almost all events will require pins no matter what it is. hood, hatch, ect.

Hope this helps you and others requesting similar information!

1,478 Posts
cf hatch pins? lol impossible with xb's . well just about . eww . ha ha haha

way too many rules.

Who am I to say this?
2,110 Posts
smoke20 said:
I will sometime this season. Just need to kill the body roll, it's pretty fast in the corners but that body roll is a confidence killer.
I know you guys are talking about racing, wich is a whole different animal than just road driving, but I think the box has way less body roll than my civic did, and it was lowered slightly.
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