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Old 12-26-2005, 09:35 PM   #1
zx3freak
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new to autox

Im getting ready for the upcoming autox season and i wanna run some races. I have a stock 01 zx3. Im debating on going stock class or street touring. What would be good setup for tires/rims and suspension or any other mods allowed for each class. Thanks for input in advance


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Old 12-27-2005, 09:47 AM   #2
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here's what I could dig up from my regions site....you may wanna go to www.SCCA.com for more in depth rules.

Stock

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
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Old 12-27-2005, 01:29 PM   #3
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Here's all the rules

http://www.scca.org/_filelibrary/File/2005SoloRules.pdf

Honestly, don't do much your first year, since it really won't matter anyway. Find out precisely how to handle your car in stock form, then you'll be able to figure out what aspects of the car you would like to improve through modification. The car will remain much faster than you for quite a while. Try to go to an autoX school, like Evolution, at the end of the year. You'll be 100% shocked at how much faster it'll make you. Also, read the sticky in this forum on AutoX.

Good tires are the best thing to start with, though. Get some summer-only max performance tires like Kalken Azenis. Best performance upgrade you'll do short of a full turbo kit.
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Old 12-27-2005, 04:48 PM   #4
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Tires are the first performance upgrade I plan on making for my car sometime during next season - the Falken Azenis. Take it from someone who just began this season, after my last two events of the year, all I wanted to spend my money on was a new set of tires.

To stay stock (as listed above), make sure to stay on factory sized rims. Since you're on the ZX3 model, you can go for the larger sized rim offered on the car, which is 16" I believe to still stay in HS.

I totally agree with Carrera. There's no point in pooring money into modifications on a car when you haven't even experienced it out on the course. You'll be making changes to the car without knowing what you really need to do, especially if you intend for you modifications to make you more competitive for autocross.

For the most part, it's your driving that needs the upgrade and not the car as stated. Stay stock for now, save your money, and then spend accordingly after getting to know your car better.
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Old 12-27-2005, 07:59 PM   #5
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i was thinking of getting some rota's with some hankook rs-2's. So to stay in stock i couldnt even go to svt suspension could i?
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Old 12-27-2005, 08:14 PM   #6
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so like hoosier v710's right
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Old 12-27-2005, 08:28 PM   #7
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Yep...or V700s

Rotas:
Technically, they would not be legal in stock class.
The rule states that the wheels must be within 1/4" (6.35mm) of the stock offset.
Which on your car is 52.5mm.
Most Rotas are at 42-45mm IIRC (If I Recall Correctly).
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Old 12-27-2005, 09:00 PM   #8
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Run a few events first and make sure you're into the sport before you start spending a bunch of money. In other words, work on your driving skills first.

Remember to add air to your tires and get there early so you can spend time walking the course and getting to know the folks you'll be racing with.

Most experienced drivers are pretty good about giving rides and riding with the newer drivers. So see who's good and don't be shy about asking for advice and pointers on your driving.

Once you've decided that this is the sport for you and your ready to start spending some money on your ride...go get some good tires!
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Old 12-28-2005, 12:38 AM   #9
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if i wanted to run touring class what would i need to do to make it competitive?
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Old 12-28-2005, 07:25 AM   #10
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Also, you will want to run 15" rims/tires...not 16. The 15's will let you accelerate and brake quicker due to the smaller diamiter and mass.
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