Exactly what class...

[arcana]

...would I be in? I've done a lot of research, but I'm still a bit fuzzy. I'm almost positive I'm in STS2, but I want to check with you guys and see.

My mods are:
- Removed rear sway bar
- Removed A/C
- Bride steering wheel
- No name (probably old keystone) wheels, 13"

Mods within the next month:
- Racing Beat muffler
- Racing Beat header (if money allows)
- Racing Beat presilencer (if money allows)

[prsrcokr]

Are RX7's allowed in ST classes? It seems like a lot of cars are but I don't know where to find the actual list. Any have this info?
Who can run in STS, STX and STU?

[GeneCooley]

The SCCA rules list '79-'92 RX-7 (non turbo) as STS2.  If you check the ST rules there is a reference to Appendix A.  The RX-7 is listed there.  See page 159 of the rule book.  Remember that there are still class rules to be met when you modify your car.
Gene Cooley

[wahoo5]

Here is a link to the 2006 SCCA rules. <http://scca.com/_filelibrary/File/2006_solo_rules.pdf>  It is always a good idea to check the effect on classing BEFORE you make mods to your car.

For ST2:
AC can be removed. Rule  14.1 (B).
Steering wheels can be changed as long as it is a non-airbag wheel. Rule 14.2 (D).
Your non-stock wheels are fine as long as they are not over 7.5 inches wide. Rule 14.4.
Your tires can't be wider than 225. Rule 14.3 (A).
You can remove sway bars. Rule 14.7
You can make any exhaust changes from the cats back so you muffler should be fine. This is a stock rule that carries over to ST.
Your presilencer should be OK.  Rule 14.10 (C).
Your header is OK as long as it is emissions legal. You cannot relocate the cat in the process. Rule 1410 (D).

Hope this helps.

David

[Edited on 4-15-2006 by wahoo5]

[cundog]

I'm not sure about your year RX7, but some models have as many as 3 cats.  Check to make sure you have all installed if this applies.  Good luck.

[tpcrouch]

Question from a newbie to SCCA classing. I am autocrossing my 99 Mustang GT Convertible. As the car is extensiely (obscenely) modified, what is the method for classifing the car? NASA has the car as TT-A.

[pipefitter]

It depends on how heavily modded it is. List the mods, regardless of what they are, and we can point you in the right direction.

[tpcrouch]

From front to back:
99 Mustang GT Convertible
Mach1 Chin Spoiler (cosmetic but listed becaus it could be considered an aero piece)
Custom built SLA front suspension
Remote valved DA shocks
Custom Intercooler
Vortech Supercharger
Aftermarket Throttle Body
Aftermarket MAF
Custom Chip
Welded Sub Frame Connectors (Full length)
Griggs GR40 Rear suspension including:
     Torque Arm
     Panhard Bar
     DA Shocks
     Lower Control Arms
4 Point Rollbar
315/35-17 Rear Tires

I think I got it all......

[pipefitter]

I'm thinking at the very least Street Modified.

[tpcrouch]

Yeah... I read the rules and was leaning that way but they are anything but clear.

[wahoo5]

I am not sure about the subframe connectors. When I looked into them for my Mustang, I concluded that they would put me in a prepared class. The rule to look at is 16.1 G. I can't get it to copy to paste it here, but the link for the 2006 rules is http://scca.com/_filelibrary/File/2006_solo_rules.pdf. There can't be any lateral members connecting the subframes.

I agree the rules can be very confusing. What you have to remember in interpreting them is that if the rules do not affirmatively permit a modification, then that modification is not permitted. It is not a matter of what is prohibited.

What frequently helps is getting people who have modded the same car to help. You can usually find this help on the SCCA Forums, http://sccaforums.com/forums/. Try the classing board or the SM board.

No long ago I rode in a Mustang that Mark LaMaskin built with the full Griggs suspension. The handling compared to what I was used to from my '99 Cobra was just incredible. I am looking forward to seeing your car run with us.

Hope this helps.

David

[Edited on 11-6-2006 by wahoo5]

[tpcrouch]

I'll have to check further under the car but I believe the TA has a lateral tie in to the SFC. If not, that'll help. I am defintely still a novice at AutoX with 2 events under my tread with NASA in the past month. So far I fell that the car is definetly capable of more than I am at this point but it is an over powered beast on the small course. Thanks for the help and hope to meet you soon also.