user 783003

What's the best way to find out what class I fall into in the SCCA rules?

I ran with them once last year and was CSP. I'm really not sure how accurate that was then, but have changed things up since, so I have no idea now. Their rules are pretty unclear for the new autocrosser.

Mods on the car ('91 964 Cabriolet Tiptronic)
Drilled airbox
Primary muffler bypass
Steve Wong chip
Strut tower brace
Bilstein HD's
H&R Reds
17" Cup II's (car came with D-90's)
Nitto NT01's

Thoughts?

ernie944

BSP ?

user 783003

That would suck. I ordered magnetic numbers/letters CSP 777. At least I ordered them all separate.

user 783003

Just looked it up again. The 993 is listed as BS and it shows the years 95 - 98. All other, older 911's show as CS.

Now I just need to ensure I'm Prepared, Touring, etc.

sjfehr

With those mods, you're not stock, that's for sure. Use this handy reference to help:
http://www.odr-scca.org/DIY-classing.htm

Pretty sure you're BSP. 964 is not presently eligible for Street Touring, and I don't think there's anything to bump you up into Street Modified or Prepared. Save those CSP magnets, though, the classes may change next year.

Yomi

Your strut bars need to be non-triangulated for SP (see section 15.2.C). I find that catches out some of the non-SCCA people here (mostly on Japanese cars). Most of it sounds like SP to me, and a lot of clubs would give you a pass on the strut bars if that was your only issue (especially a Tip running on Nittos).

I've never classed a 964. A 1991 964 would seem to me to fall under both ASP's "911 3.6L air-cooled, non-turbo" and BSP's "911 Carrera 2 & 911 Carrera 4". Definitely not CSP. Though as others said SP is getting revised for next year so hold onto any magnets just in case.

Yomi

Ah, I think I see why you thought you went to CSP -- because the stock car goes in CS. It doesn't work that way. First, different cars respond to mods differently: some improve tremendously with the additional street prepared changes, while others improve relatively little. This shuffles cars around. Also they do try to put similar cars together in classes.

Hopefully you won't go beyond SP. Pretty sure you'd end up in SSM which is hellish. FP is where some modded 911's end up, but prepared has its own set of rules that don't match the stock/street prepared/street modified ones at all.

sjfehr

What's worse is that Prepared requires cabs to have full roll bars, which is a bitch when it's some minor thing that bumps someone out of street prepared and into full-up prepared.

user 783003

Now I'm really confused.

user 783003

Can you call someone at SCCA to find out?

sjfehr

SCCA is all self-classing and largely relies on the honor system: you pick your class. If you pick wrong, it's resolved if someone protests you on a rule violation and you fail.

We can figure this out though. What strut tower brace are you using?

user 783003

No idea. I bought it second hand from a local guy. No names or part numbers on it.

I appreciate the help. Only ran once with SCCA so far and plan 2 runs this year. Was in the same class with a miata and an rx7. Lost to the rx7 by less than a second.

Yomi

Is the strut tower just a bar connecting the two strut tops, or is it a bar plus cross braces that attach to the chassis somewhere in the middle? The brand, materials, etc. really don't matter -- the SCCA is just trying to keep the mods to relatively simple aftermarket parts in this class, rather than people thinking they have to go all out bracing the chassis every which way.

It's hard to say just on the basis of forum posts, but it sure sounds like BSP to me. If your bars are triangulated or you've done something else beyond SP rules (i.e. stuff that isn't listed above) then you can either go into SSM knowing cars there have the potential to vastly outspend you and outrun you, or talk to the tech/classing people and others in BSP about your car and see if they'll let you run there. Sometimes it just depends on who's running where. In our region BSP is relatively big and runs all over the map in results, so it'd be a fun class to be in (and they like more people), while SSM has a trailered, Hoosier-shod, RaceLogic TC-equipped Viper with a decent driver all by himself, so wouldn't be much fun in terms of competition. Your region may be completely different. Also, you can bump yourself up if you want for some reason (that is, just because you can make modifications doesn't mean you have to -- it you have a stock car and want to run in SP or SM because your friends are there or you may make mods later, you can do so if that's where a modded car like yours goes).

Above all, have fun. The classing is nice for the competition part, but there's a lot to be said for not overly stressing about it. If they put you in SSM, don't worry about it for now. Some regions even have run-what-you-brung classes, often along the lines of "street legal car, street tires, pretty much everything else free" which is helpful for new people and people who like modding their cars but never had any SCCA rules in mind. Our region has a big group, often with 15+ people in the class, and they have tons of fun competing with each other and not worrying about rules, just bs'ing about their cars and driving.

I like that classing worksheet except for the "tires under 140 treadwear not legal in stock" which I always found weird. I really should have sent him a PM on sccaforums about it. Maybe it's just everyone outside the SEB's wishful thinking...

user 783003

It's just a bar that connects the two strut tops. Sounds like I should stick with the CSP magnets and hope nobody objects.

sjfehr

You probably could continue to run CSP and nobody would notice or care, but I'm 99% sure you're BSP. (At least this year)
Just an oversight, I'm sure I'll let Greg know to fix it.

Edit: it's been fixed!