I have a 2005 JCW with extensive brake and suspension mods, but no engine mads. I also have a set of RA1s in 205/40/17 - smaller than stock diamter.

Is STX the class?

My next track events are in the fall so I thought I might try autoXing (again) in the meantime. Satay-ayam suggested STX but he wasn't really sure about the RA1s in STX.

 

no R-compounds or big brake kits (edit: unless using factory mounting point) in Street class

 

http://www.scca.com/_FileLibrary/Fil...solo_rules.pdf

STX requires tires with a treadwear of 140 or higher and the max wheel width is 7.5". Brake rotors also have to be stock size. [edit] brake rotors have to be stock size in STS, STX does not have a brake size requirement[/edit]

The big brakes also bump you out of street prepared, it seems.

Looks like you're in street modified.

 

Yep, R compounds are not allowed.

Brake kits are allowed, but I'll let you translate for yourselves.

STX

BRAKES
·Brake rotors may be replaced with any rotor of equal or larger diameter made from a ferrous or aluminum alloy. Calipers are unrestricted, but must mount to the original attachment points.
·Alternate DOT approved flexible brake lines.

 

Matt's right, I missed that line when I was checking the rules. STS requires stock size brakes. STX allows larger brakes. But the tires are still a problem for STX.

I still think that larger than stock brake rotors knock you out of street prepared and into street modified (which doesn't make much sense).

 

The Wilwwods use a bracket to move the caliper farther out so it can acceopt a larger rotor. It appears that this bracket may not be allowed???

I don't really care what class I'm in. I'm only doing this to keep fresh and to learn a little more about the car. However, I don't want to show up and have the organizers say, "there is no class for your car, go home." I don't care if I'm up against a 3,000 hp Ferrari.

 

Actually according to these rules, it looks like you may be ok to run in STX. If not, you'll be bumped up to SM. But from what it sounds like to you, you should have fun either way. If ANY region says, "No class for you", we'll dub them the soup ****'s of autocross. Hope you have fun!!

 

Why couldn't he run DSP. It's basically STX with R compounds.

You can do other stuff in DSP -
Wheels of any diameter, width, or offset may be used
You can add wings and front spoilers ;-)

 

my vote is for dsp. but if you dont plan on running competatively and just a few times a year, you can really run in STX if you wanted. most people wont ***** untill you start winning, or become a regular.

 

In SCCA Solo, it is your responsibility to declare what class you are competing in. Just declare you car as A Modified, that way you can still run and not have to be bothered about what class you should really be in. 99.9% surity that NOBODY will protest if you declare AM!

 

Yep, true true. DSP is an option as well. That way, you could run your R's.

 

OK very good. DSP or A Modified

The last time I did this was in a 1981 Ford Fiesta. I was watching from the sidelines and expressed how much fun it might be. Well, an official heard my conversation, walked up to me with his helmut and asked if I wanted to try it out. I said sure and he coached me...but first asked me to remove all the junk from my car

Thanks for the info guys. I'll post back when I've add the opportunity to take a run.

Michael

 

I've already been proven wrong once on this thread, but here goes again...

And, rule 13.6 is the stock class brake rule, which does not permit larger rotors. So, it seems to me that larger than stock rotors are not allowed in the street prepared classes.

 

But, I agree, sign up for DSP and as long as you don't win the class, nobody should care.

 

Michael - so you're really gonna come out to an autocross. Excellent. I think you should leave the RA-1's at home and run STX on your street tires. I think brakes are fine for STX as long as the bracket attaches to the holes that the stock caliper attaches to.

 

I can't believe a JCW would be allowed in STX. I mean, on a stock S, as soon as you touch the pulley, you're bumped to SM. Even some intakes bump you out of STX into SM (Alta). Though I've never seen a JCW at our local events, so I have no basis for comparison.

 

P.S. What year is your JCW? The description of the "B-stock" forum seems to imply that 2006 JCWs are in B-stock. Maybe your mods would put you in BSP? Or BM?

 

It is a factory car, but...most racing organizations consider the JCW as an aftermarket type thing. Nuzzo cannot run a JCW...or he can, but he'l be with the 3,000hp Ferrari.

Satay-ayam - I'll bring the street stuff. I would prefer to keep the track tires in good condition for my last few events. I decided to go to Pocono BTW.

 

Yep, JCW is specifically allowed in STX as of this year because it is a factory option. There are quite a few of us who are having fun beating up on the WRX's this year.

 

The following is Page 149 of the 2006 Solo rules. If someone shows up with a 2006+ JCW MCS they go to B stock from G.


BMW

M Coupe & Roadster (‘96-’00)
M3 (E30)
M3 (E36)
Z3 6cyl NOC
Chevrolet
Corvette (‘63-’82)
Chrysler
Prowler
Ferrari
308, 328
Honda
S2000
Jaguar
XKE (6- and 12-cyl)
Lotus
Elan RWD
Esprit
Europa Twin Cam
Europa, Renault engine
Maserati
Biturbo
Mazda
RX-7 Turbo (’87-’91)
RX-8
Mercedes
SLK
Morgan
Plus 8
Mini
Cooper S (John Cooper
“Works” package) (‘06+)
Nissan
300ZX Turbo (‘90+)
350Z
Plymouth
Prowler
Porsche
911, non-turbo, NOC
911 Club Sport
914/6
928 (all)
944 (16V)
944 Turbo (all)
968
Carrera 2, Carrera 4 (964
chassis)
356 Carrera 4-cam
Toyota
MR2 Turbo
TVR
8-cyl and V6

 

Ok, so.

Just so there's no confusion.

HS - Stock Cooper

GS - Stock Cooper S

BS - 06 JCW only (pre 05 and older JCW are not allowed as they are dealer installed)

STS - All Cooper (Street tires only)

STX - Cooper S. Also, all JCW are allowed, which means.....06 factory installed and 05 and older dealer installed JCW as well. (Street tires only)

DSP - Same as STX applies, except R's are allowed.


Look at the rules to see what mods are allowed in each class.

 

05 and older are all dealer installs or "trunk kits" and go to Street Prepared A. See Page 160

STREET PREPARED CATEGORY

Street Prepared Class A

[/SIZE][/FONT][FONT=Univers][SIZE=2]

BMW
M Coupe, M Roadster, Z3 (6cyl)
M3 (E46)
Mini “Works” package
Chevrolet
Corvette (‘97-’04) (C5)
Corvette (‘05+) (C6)
Dodge
Viper
Elva
Courier
Ferrari
355
360
Dino 206, 246 (all)
Fiat
2000 Spyder Turbo (all)
Ford
GT
Griffith
(all)
Lotus
Elan (RWD)
Elan M100 (FWD, all)
Europa (all)
Elise (‘05+)
Elite 2+2 & Eclat
Esprit (4-cyl all)
Esprit (V8)
7 & 7A
Mazda
Rx-7 Turbo (’93+)
Morgan
V8 all
+4 (2138cc all)
Porsche
911 AWD Turbo
911 Club Sport (to 3.2L)
911 GT2 (‘02+)
911 GT3
911 non-turbo (to 3.2L)
911 non-turbo (3.6L air-cooled)
911 Turbo & 930 (to 3.3L)
911 Turbo & Turbo S (3.6L aircooled)
914/6 (all)
924 Turbo
944 (16V)
944 Turbo
968
Boxster
Carerra 2
Carerra 4
Toyota
MR-2 Turbo (’91+)
TVR
4-cyl & 6-cyl. (all)
V8 (all)
+ Sports cars over 2.0L not otherwise
classified. (See Section 15.1.C for
update/backdate limitations.)

 

ASP is no longer with the BoD decision for this year. You can race in it if you'd like, but you have the option of being much more competitive in DSP or STX. This includes ALL JCW kits, either factory or dealer installed. The only class where it needs to be factory installed is BS. If in doubt, go to the Street Prepared portion of NAM and ask. They'll help you out better than I.

 

As noted,

DSP with "R's" allowed
STX with street tires (up to 8" wheel, 245 tire, 140+ treadwear)

or say "Hang it all, I'll go play in SM" like I did and run either set of tires as desired. There are limits to the allowed mods in SM, but most Minis that are still street driven are probably legal. Use any intake you feel like, any exhaust, any pulley size, any brakes, any wheels, any DOT tires, any other drivetrain mod you feel like. The MINI isn't nationally competitive in SM, but it IS a hoot to drive. Ultimately, this is all just for fun anyway.

Please note, for all of the above you can't have a stripped interior. Cages are okay, as are replacement seats. You can remove the rear seats in SM, but not gut the inside. If you've pulled out interior trim, its off to Prepared or Modified for you.

Scott
90SM

 

Thanks for the advise guys and gals. I'll chime back in after my first event.