SCCA Class Rules

[Alan]

Need to find an online version of the SCCA Solo2 rule book. In particular, I need rules on the allowed modifications in various classes. For some reason I'm finding it difficult to find the "official" rule book online.

Thanks for the help. :)

[oilleak]

http://www.moutons.org/sccasolo/
the "official" rulebook is not online
You can buy one online at http://www.sccaclothing.com/cgi-bin/storemirror/agora.cgi?cart_id=772203.16701*285Dk0&xm=on&product=Publications
or at an SCCA event.

[PseudoRealityX]

the mouton's site is about a year old in up-to-date-ness

if you have any specific questions, i've got quite a bit store in my cranium

[Alan]

Thanks for the link. But this brings on quite a few questions:

First, a bit of background on the car and what I intend to do. I'm purchasing a 4-cylinder Mustang coupe. Based on some of the modifications that I want to do motor and suspension wise, I am setting it up to most likely compete in SM.

Now the questions:

1. The 99-up Cobra IRS bolts up to the factory supension locations. I know this is an entirely different rear suspension setup than the stock 4-link. If I were to eventually compete on a national level where people actually care about what you have done to the car...will this still be legal in SM?

2. I heard tubular k-members (regardless of whether or not they retained stock suspension geometry) were not allowed in SM. However I have yet to read this in any rule book. True or false?

3. If I have to use the stock k-member, what about tubular a-arms? Are bolt-in braces that strengthen the stock k-member allowed? Do I have unlimited choice of bushing materials?

4. The interior: do I have to retain any of the factory interior? I plan on just keeping the dash and headliner...door panels will be replaced with aluminum sheet and everything else will be sold.


Thats about it. Everything else is pretty clear. However I do find having to retain a metal trunk lid is strange. Finding a rust free perfect condition trunk lid without holes for luggage rack or spoiler can be almost as costly as purchasing a fiberglass unit. Just find this a relatively odd rule. :dunno:

[PseudoRealityX]

Originally posted by Alan
Now the questions:

1. The 99-up Cobra IRS bolts up to the factory supension locations. I know this is an entirely different rear suspension setup than the stock 4-link. If I were to eventually compete on a national level where people actually care about what you have done to the car...will this still be legal in SM?

2. I heard tubular k-members (regardless of whether or not they retained stock suspension geometry) were not allowed in SM. However I have yet to read this in any rule book. True or false?

3. If I have to use the stock k-member, what about tubular a-arms? Are bolt-in braces that strengthen the stock k-member allowed? Do I have unlimited choice of bushing materials?

4. The interior: do I have to retain any of the factory interior? I plan on just keeping the dash and headliner...door panels will be replaced with aluminum sheet and everything else will be sold.


Thats about it. Everything else is pretty clear. However I do find having to retain a metal trunk lid is strange. Finding a rust free perfect condition trunk lid without holes for luggage rack or spoiler can be almost as costly as purchasing a fiberglass unit. Just find this a relatively odd rule. :dunno:

First thing to note... if don't see the rule you want in SM, then you have to go back to SP... if you don't see it there, then you go back to stock. Every class is subject to the rules of the classes before it, with the allowed modifications that the particular class allows.

1) Suspension is OPEN as long as it bolts to the factory locations....ie, the oem IRS is legal.

2) True, k-members are not allowed

3) A-arms are open, bushing material is also, IIRC

4) Interior must remain stock except for the seats, steering wheel, shifter. The backseat may be removed... you cannot have AL panels for doors. All saftey equipment must stay there also, IIRC. Cages that conform to the SCCA requirements are also allowed.


Some of the rules may seem strange when you think about the car you're preparing...in your case, a Mustang. However, you must understand that the rules are written as to cover ALL cars, and not to make specific rules for each car, which would be a logistical nightmare. Things like the K member rule suck for Mustang owners, but to write a rule which allows the k members that are available to Mustang owners would be impossible to write so that most other cars couldn't basically tube frame the front of their cars, which would be a huge advantage, and is a mod that you can do once you reach Prepared.

[Alan]

Bummer in regards to the interior portion. Wasn't really looking to ditch the interior for weight savings...more for a money savings.

I understand the reason for not allowing the tubular k-member...although it is a bolt in replacement for the stock unit. ;)

So I guess I'll shoot for SM, then years down the road I'll figure out where to go from there. Thanks again for your help/input. :)

[Leonard]

Alan, I hope you don't have any intention of being competative in SM in a Mustang. There's a reason I gave mine up.

A LOT of the rule debates regarding k-members were handled on the STU yahoo group (http://sports.groups.yahoo.com/group/stu/). I'm thinking that your k-member brace may not be legal, but I don't remember for sure.

[Alan]

Originally posted by Leonard
Alan, I hope you don't have any intention of being competative in SM in a Mustang. There's a reason I gave mine up.

A LOT of the rule debates regarding k-members were handled on the STU yahoo group (http://sports.groups.yahoo.com/group/stu/). I'm thinking that your k-member brace may not be legal, but I don't remember for sure.

Out of curiosity, what class would you see a Mustang best suited to compete?

I'm not specifically setting my course to run in SM. I thought with the modifications I had in store that I'd most likely be placed into that class. The k-member will probably be well down the line (due to expense). Thinking I'll sort out the suspension for the time being to where it will leave me for improvement down the road (i.e sticking with the stock a-arms and k-member, but put in a nice set of coilovers).

My main goal is not be competitive within whichever class I start back into. The main goal for me is to get out on the track and learn the car...and most importantly have fun. As my experience grows, I'll become more serious about becoming competitive and build my car to compete in a specific class.

[Leonard]

ESP or CP.

I'd say give up if you're gonna try keeping the 4 banger.

[Alan]

Originally posted by Leonard
ESP or CP.

I'd say give up if you're gonna try keeping the 4 banger.

Who said I was going to keep the 4-banger? Plan on starting out with a carburated 302 (hopefully the short block coming with the car is good) with a nice set of heads and a mild cam...nothing too radical for the time being.

[Leonard]

for some reason i thought the car you were getting had a 2.3

[Alan]

Originally posted by Leonard
for some reason i thought the car you were getting had a 2.3

Sorry about that. Thought I mentioned I was throwing a V8 into the car in a previous post.

But yeah, originally a 1989 LX 4-banger notch. I'm buying it with a V8 k-member (not even sure if there is much difference over the original 4-banger unit), '90 302 short block (may or may not be blown), and a decent stock 8.8 rear out of a '93 GT. Everything not vital is already stripped out of the car. It was too good of a deal to pass up. :)

[Zman]

Cool post I just got my 88 v8 coupe back , and wanted to run autocross and am just finding info now. looking for a local organization now to be part of. Im in the Clearwater area. thanks Andel

[Muddy]

CP cars are :cool:

[Loren]

Originally posted by Muddy
CP cars are :cool:

Exactly what I was thinking. Not necessarily streetable, but if you've got a stripper muscle car and want to go REALLY fast at an autocross... it is the way.

350+ hp, weight stripped to 2600ish, 12" wide slicks on all 4 corners... and always breaking something. ;)

[Leonard]

I'll pass on CP and take AP. :-D

[Loren]

Originally posted by Leonard
I'll pass on CP and take AP. :-D

There is coolness there. I think E-Mod has always been my favorite. Creativity and big power run wild there!

[Muddy]

Sorry Leonard, Cobras running in AP just don't excite me. Maybe when yours is done it will change my mind. ;)

[PseudoRealityX]

Originally posted by Loren
Exactly what I was thinking. Not necessarily streetable, but if you've got a stripper muscle car and want to go REALLY fast at an autocross... it is the way.

350+ hp, weight stripped to 2600ish, 12" wide slicks on all 4 corners... and always breaking something. ;)

Most CP cars are actually still over 3000... of course, that's still usually 300 lbs less than they were when they started.

The weight limits for some of the cars is much lower, but things like the big 12" slicks, fuel injection, and others add weight peneltys.

[Alan]

Ok...last two stupid questions:

The rules are a bit vague, so here is my assumption. A 3-link torque arm and panhard bar setup is not legal on a Mustang running in SM...right?

Lets say I put a motor from an entirely different manufacturer into my car. Where would that put me?

[MrSideways]

When talking to robert lewis (owner of a CP 65 mustang) the weight penality for Fuel Injection is becoming decidedly less in the coming years. Down to an almost un-noticeable amount within 2 years. So if your going build something. He suggested go fuel injection. According to him More reliable, more stable, more useable power. But Don't get a 86- block. They are weak and give up the ghost around 500 crank HP. A cracked Block will ruin your day... also stay away from the Alternators 86-88. Apparently there are several bulletines out about them catching fire when the car is parked and buring down houses. I got a first hand experience with this last week when I walked outside to find my car on fire after being parked for 2+ hours. Ford apparently put out the notice but offers nothing in compensation and if you don't have collision, you don't have fire insurance.

[Alan]

Originally posted by MrSideways
When talking to robert lewis (owner of a CP 65 mustang) the weight penality for Fuel Injection is becoming decidedly less in the coming years. Down to an almost un-noticeable amount within 2 years. So if your going build something. He suggested go fuel injection. According to him More reliable, more stable, more useable power. But Don't get a 86- block. They are weak and give up the ghost around 500 crank HP. A cracked Block will ruin your day... also stay away from the Alternators 86-88. Apparently there are several bulletines out about them catching fire when the car is parked and buring down houses. I got a first hand experience with this last week when I walked outside to find my car on fire after being parked for 2+ hours. Ford apparently put out the notice but offers nothing in compensation and if you don't have collision, you don't have fire insurance.

Yeah those are with the old 3-wire alternators I believe. Mine is getting a new sn95 alternator.

I'm pretty confident in the cast iron 302 block. Scott has been punishing his 1990 302 since day one...starting with hefty shots of nitrous and now with 470 (I think) at the wheels thanks to his new Turbo setup. Short term goal for the motor is a reliable 350 at the crank with a stock bottom end with the stock forged internals. Sticking with a carburater due to pure simplicity of tuning and the exceptional throttle response. Plus it is cheap. ;) MM&FF actually had a great writeup on a 340 hp carburated 302 they built for $1500 w/ported stock cast iron heads and stock bottom end. This article is making me think about Dave's (Fordified) idea of using 289 heads with the smaller combustion chamber which should up my compression to about 11:1. It would be an interesting, cheap, and promising combination. :)

[Leonard]

Originally posted by Muddy
Sorry Leonard, Cobras running in AP just don't excite me. Maybe when yours is done it will change my mind. ;)

What about 2000lbs and 400+hp on fat slicks doesn't excite you?



:crack:

[0HP930]

Originally posted by Leonard
I'll pass on CP and take AP. :-D
Ah, so that explains why you have been trying to get me out of the AP class.

I guess you don't want that kit car project of yours to face any real competition, do ya.

;) :P

[Leonard]

Tony,

That was ASP you were trying to run, not AP. Time to lay off the dank.

[0HP930]

Whoops, I forgot there is both an A Street Prepared and an A Prepared. Its been a while you know.

Which class does that bump you into when you end up being alone in your class?

[Leonard]

which does which bump you to?

[0HP930]

You in AP?

[Leonard]

AP bumps to E-mod. I'm not planning on anything that will move me there.