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04-16-2002, 08:12 PM | #1 |
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Auto-X Rules: Read This First
This is a summary of important SCCA Auto-X (Solo II) rules, with a special emphasis on classes that the 2.5 RS and the WRX can run in, listing which popular mods are allowed in which class. It should answer the most common question, but it does not replace the official rule book, which contains the full details for all the points mentioned here, plus many more rules. There is also a number of links to additional valuable resources at the end of this post.
Last modification: March 24, 2005 (update with 2005 rules) Classes Which class you are running in is decided by the car model you drive, plus a category depending on the modifications you make to your car. With increasing levels of modifications, a logical progression is from Stock category (cars with no or minimal modifications) over Street Touring, Street Prepared to Street Modified. There are categories beyond Street Modified (Prepared, Modified) that are not within the scope of this document. The possible classes for a 2.5 RS are:
The possible classes for a WRX are:
The possible classes for an STi are:
The possible classes for a Forester XT are:
The possible classes for a Legacy 2.5GT are:
One essential principle is common to all the rules: If a modification is not explicitly authorized by the rules, it is not allowed, no matter how trivial it seems. Stock Rules (DS, GS) The following modifications are allowed in stock class:
STS Rules All modifications from the Stock rules are allowed, except for:
In addition, the following modifications are allowed:
STX Rules All modifications from the STS rules are allowed. In addition, the following modifications are allowed:
STU Rules All modifications from the STX rules are allowed. In addition, the following modifications are allowed:
Street Prepared Rules (DSP/ESP) All modifications from the STU rules are allowed, except for:
In addition, the following modifications are allowed:
Street Modified Consult the rule book for details of the Street Modified rules. Street Modified inherits all allowances from Street Touring and Street Prepared. The following does not attempt to list all additional modifications that are legal in this class, it just lists a few popular mods that are common in Street Modified, but not allowed in Stock, Street Touring or Street Prepared:
Beyond Street Modified Consult the rule book for Prepared and Modified categories. The following list is just a reminder of a few popular mods that are not allowed in Stock, Street Touring, Street Prepared or Street Modified, they will put you into Prepared/Modified classes where you will be competing with race cars:
Not Allowed In Any Class The following are not allowed in any class:
Uncertain Mods No clear rules are currently available for the following popular mods:
Common Questions
Additional Resources Official rule book (available for download) FasTrack (official SCCA publication containing latest rule changes) Solo II information on SCCA web site Rules on moutons.org (partly outdated) Rules in table form (seems to have a few mistakes) Rule and car setup information at subrew.com SCCA Forums (message boards) Solo2.org (message boards)
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Last edited by Scooby South; 01-21-2007 at 12:28 PM. |
04-16-2002, 09:17 PM | #2 |
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you sure ALK leaves you in Smod?
I was thinking modified suspension pick up points put you in prepared? |
04-16-2002, 09:30 PM | #3 |
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Great work...
For reference, I have asked these questions from a member of the SEB, Charlie Davis.
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04-16-2002, 10:31 PM | #4 | |
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Quote:
Chris: Thanks for the remarks, I might have to check about some of these things another day. Just quickly: I mentioned the STi engine mounts according to this STX rule: "Alternate motor mounts and/or engine locators (bobble struts) sold by the vehicle's manufacturer or their Motorsports subsidiary or affiliate (Chrysler/Mopar, Toyota/TRD , Honda/Mugen, etc.) are allowed." STX has more generous rules for seats that STS: "Alternate driver and front passenger seats are allowed, but they cannot be constructed of a solid outer shell and must have a suspended bottom cushion and be fully upholstered." Note that they don't have to be reclining. |
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04-17-2002, 02:52 AM | #5 |
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One thing IMHO about modding past DS and STS. If you do those, you might as well throw yourself in SM and have fun. In CP and whatnot you usually have few competitors and if someone has a REAL CP car you will get your arse kicked.
GREAT Job on the rules though! |
04-17-2002, 08:19 AM | #6 |
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Excellent job, sir; appreciate the time and effort. This ought to help a lot of people.
Len |
04-17-2002, 08:45 AM | #7 |
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Great job. Very clear and well organized reference for anyone who is unsure where they fit or contemplating additional mods. Thanks for your work.
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04-17-2002, 08:49 AM | #8 |
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After reading another thread, I have a question. Are data acquisition systems legal for auto-x? I don't recall seeing any mention in the rule book and I'm not sure this is really considered a mod. I'm not sure how useful it would be on an autocross course but it would be very nice for track days. I suppose you could just remove it for autocross . . .
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04-17-2002, 09:47 AM | #9 | ||
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TheWRX... I think Chris' list is referring to SP rules where things in STX cannot be carried over to SP (Additional items to add to your exclusion list... and they are all correct, none of the things Chris listed are legal in SP).
Also, I think there should be a note for STX that the rear differential mount is NOT considered a 'tranny' mount. (Reference April FasTrack for SP) Quote:
Quote:
Great job on the listing. --kC |
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04-17-2002, 07:10 PM | #10 |
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Moderators?!?!
Can we make this a sticky?
oh yeah, bump... |
04-17-2002, 09:34 PM | #11 |
Scooby Specialist
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updates
Edited with minor updates for:
Thanks to everybody for the positive response! Yes, I was hoping that this could be made STICKY. |
04-18-2002, 11:46 AM | #12 |
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Bump.
Yes. Sticky.... |
04-18-2002, 05:42 PM | #13 | |
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Re: Auto-X Rules: Read This First
Quote:
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04-18-2002, 05:45 PM | #14 |
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Yup, don't try a larger scoop in stock or STS(X). Thats a illegal flow mod. You might be able to get away with it in STX but you will get yelled at for running something like that in stock class.
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04-18-2002, 10:47 PM | #15 |
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Hey! Moderators
How about making this thread STICKY ? Great job of clarifying the rules that someone posts a question about, every other day or so.
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04-19-2002, 12:02 AM | #16 |
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DAMN, I'm gettin the ALK for my car.... so I gotta run in the modifieds....oh HELL NO!
Maybe I can make it look STOCK and no one will complain I KNOW its not polite to be in the wrong category...but HELL, I'm a newbie and want to at least have a little experience before I jump into a higher category....plus I never compete for points and if I ever did, then I would run in the right category. |
04-19-2002, 09:12 AM | #17 | |
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Quote:
If you're not going for points and just against yourself, then it doesn't matter what class you're in. The thing to think about is... you have someone who's worked really hard to prep his car for the class, and is going for class points. Then you show up in your wrong classed car. If you finish AHEAD of them, you have now robbed them of their rightful points, because if you were classed right, then you shouldn't have been there in the 1st place. And if that one time you run you take enough points away from them to trophy at the end of the year? NOT a good idea. Run in the class you belong in. Then you can compare your times to that in the class you WANTED to run in to figure how competitive you are. You said yourself, you're not going for points... but what about the other people that are? Run in the proper class and you don't have to worry about taking points away from people. --KC |
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04-19-2002, 11:07 AM | #18 |
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Maybe I missed it, but it's worth noting that removing the intake silencer on the WRX is enough to put you into STS(X) as well.
Even though my car is bone stock otherwise, including the super-sticky RE92's , my Kartboy shifter and "snorkellectomy" put me into STX. Doesn't seem fair, somehow! But "rules is rules"... Excellent post. I also vote to make it a sticky. |
04-19-2002, 11:43 AM | #19 | |
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Quote:
The STX index is only very slightly higher than the one of DS, so unless you want to run race tires, it's a great class to run in if you like to make a few small mods to your car. It will probably require more $$$ to get your car really competitive on a high level in STX, but as long as your driving skills still need work, I wouldn't worry about that. "snorkellectomy" definitely wins the prize for word of the day! I couldn't agree more with KC about bending the rules. Sure, if you're running in local events, and you're at the bottom of the rankings, most people won't care if you have an ALK on your car. But where do you draw the line? The next guy might be a little faster than you, and have more significant mods, is that still ok? There is a simple way to avoid these kinds of questions, which is by following the clear line that is given by the rule book. |
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04-19-2002, 12:32 PM | #20 |
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Rule 13.10 A says "The engine air filter element may be removed or replaced. A replacement element which is taller than standard may not be used to hold the air cleaner cover open. No other components of the air induction system may be removed, replaced or modified"
With this rule, it means that you cannot modify the "snorkle". It might not be fair if you have a stock WRX with RE92s and a modified "snorkle". Then again you don't have a stock WRX anymore though Anyways, think about it this way. I have a DS WRX with any and ALL allowable mods on it. Lets say that you would put the same mods on yours but also modify the "snorkle" and then beat my by 0.01 of a second. (I've seen margins like that and smaller all the time). Would it be "fair" then though? I think the "snorkle" is good enough for a few hundreths around a 60 seconds autox course. With margins of victory in the tenths and sometimes thousands every little rule should be followed. I understand if you are new at autoxing and have something like a modified silencer and a short shifter, ask your competitors in your local class if they mind. Most of the time they won't unless you beat them. If you finish DFL then no big deal, but if you beat someone who has a totally stock car it becomes unfair. -Tom thats how I REALLY feel |
04-19-2002, 03:20 PM | #21 |
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Might want to clarify that body kits in STS means bumper covers, lips, spats,spoilers, etc. Light weight hoods and trunk lids have specificially been disallowed in fasttrack updates.
Also if your body kit is completely CF (as in a obvisious weight reduction attempt) you can be protested. |
04-20-2002, 08:08 AM | #22 | |
Scooby Specialist
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Quote:
You're a jerk if you do that... If you don't care about points then what difference does it make what class you run in and where you finish in it? It probably doesn't make that much of a difference because you're probably such a slow driver that you'll always finish out of the points in D-stock anyway where Type R's will kick your ass. actually sometimes it's more fun to run in a different class than all your Suby buddies because then you can watch them all drive later. |
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04-20-2002, 05:21 PM | #23 |
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First off, I ran in GS...I have a 2.5.
And I KNOW its not polite, and next auto-x I WONT run in GS. At my first auto-x I had: CAI (PDM intake) Kartboy shifter and bushings cat-back Magnaflow exhaust 20mm WRX rear swaybar I was quite a bit out of the rules, but I think I learned alot. Next auto-x I will have the ALK and Lightweight pulleys. I will probly run in either STS or DSP (dunno which as of now) The cool thing is that everyone I know should also be running in that class (who WAS running in stock categories last time). Ill start being more fair, and sorry if I pissed anyone off |
04-20-2002, 05:25 PM | #24 |
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DDman,
the ALK kit puts you out of STS and DSP. Run if you want but be prepared to be protested. I just found out that a friend of mine (PaulC) lost 2nd place because of a 240zx running a SR20T motor just 'cause he wanted to run with his friends. Now this guy was warned before he gridded, but still he managed to piss off more than his share of STS competitors running for points. |
04-20-2002, 08:38 PM | #25 |
Scooby Specialist
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Join Date: Feb 2001
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the only mod that puts you out of ESP which is what the WRX is classified in as far as I know is the ALK
but with your mods you'll probably get ripped up there anyway so feel free... what's the big deal with the ALK anyway, you can tune most of the understeer out of the car with roll bars and coilovers. And brake dive increases with it installed. I've heard it's a good mod but it's going to cause you a lot of headaches if you autocross your car that often. I can almost promise you more than one person saw this thread here that will be at your next event and will protest you and they'll throw you right into Modifieds. rules are rules, yeah you can't run with your friends... then don't do that mod, or take it off for every event. |
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