How to Find the correct Car Class within the WSCC Groups
Okay so in the first post we have explained how the 4 main groups are divided. Now letís look at the specific car classes a car might fall under and figure out how to find the correct one.
I'll use a 2010 Civic Si with mods as an example to determine what class a modded car might fall into.
Mods for the this 2010 Civic Si are, coilovers, front and rear swaybar kit, Hondata, front lip, CAI, Cat back exhaust, wider rims that stock.
*This might help vif you are a visual learner trying to figure out car classes. It's a list of all the different car classes available : http://www.gotcone.com/blog/2012-scca-solo-pax-783.html
*Note that a few classes under "Street Touring" such as SM, SMF and SSM should be on there own. Street Touring is a dedicated street tire group SMF SSM SM are not. (More on what those numbers next to each class means in a later post)Step 1:
get the 2016
rule book: 2016 SCCA RULE BOOKStep 2:
Go to page 167 where you will find a list of all classes and cars permitted in those classes. Do a search of your car, in this case I'm looking for a 2010 Civic Si model. (I typed in "Civic" and found the listings corresponding for the 2010 Si, note a 1995-Si or a 2010 non-Si might be classed differently, It's important to look for the correct model.
So for a 2010 Civic Si the options are as follows:
(each car should have a listing under Stock, ST, SP, SM)Stock
(ranges from SS-A-B-C-D-E-F-G-H)G-StockStreet Touring (ST)
(Ranges from STF, STC, STS, STX, STR, STU)STXStreet Prepared (SP)
(Like Stock ranges from SS-A-B-C-D-E-F)DSPStreet Modified (SM)
(Anything beyond Street Mod like "Prepared" or "Modified class" and you most likely have a non-street worthy car, no point covering them at this point)Step 3:
Now that we have figured out where our example car has landed in each of the possible class sub- groups, we need to narrow it down to the proper class. I find it's much easier to work from Stock down the list towards the classes that allow more and more car modifications. To find out what the rules are for each class will take some time: Stock is at page 71. Street Touring at 81. Street Prepared at 91. Street Modified at page 107. But to save your time I made I little questionnaire to point you in the right direction.
Important: Please note how to interpret the rules. If a modification is not explicitly written in the rule book under a certain class, it is not allowed in that group. Meaning the rule book mostly just lists which mods ARE accepted; anything not explicitly mentioned is not allowed.
I have a few easy questions to narrow down class selection without reading through the entire rule book. (These are a few of the most common mods that throw you out of a specific class)StockAm I using springs that would have original been installed form the factory when it was sold new?
Does my car have the factory wheels or an aftermarket set with exactly the same diameter and wheel width as the originals? (offset can be 1/4inch different)
Does my car have at-least ONE of the original swaybars? (You can have one aftermarket swaybar front or rear but not both)
-If you you answered "yes" to all of these questions there's a good chance you fall into the stock class, keep reading the stock rules at page 71.
-If you said "no" move along down the list. Stock isn't the right one for you.Street TouringDoes my car still have a stock intake manifold and throttle body?
Anything goes for exhaust but do I have a catalytic converter mounted within 6" of the original cat?
Do I use Street tires with a tread-ware rating of 140 or higher?
Is the car body free of any aftermarket lips, wings, spoiler, side skirts, fender flares?
(Turbo or SC cars only) Is my car still at the factory boost levels?
-If you answer "yes" to all of these questions and "no" to at-least one of the question under stock class, chances are you fall in Street Touring. Keep reading at page 81 to find out the rest.
-If you answer no to any one of the questions listed above, keep reading... Street Prepared Does my car still have the stock long block? (long block= engine from oil pan to the valve covers. Intake and exhaust manifolds or any ECU is open to anything)
Does my car have an aftermarket steering wheel? (Only applicable if your car originally had an airbag steering wheel)
Does my car still have the stock back seat? (if it came with a back seat, front seats can be changed)
*Important to note front lips or spoiler ARE allowed as are rear spoilers. But wings and side skirts are NOT allowed. (It's not that this class is anti-rice, it's more that in the real world a proper set of side skirts and wings can be an aero advantage)
If you answered "yes" to the Street prepared questions but no to at-least one of the question under Stock or Street Touring, you mostly likely fall in the Street Prepared category. Get your read on at page 91. If answered no to any of the question bellow keep reading... Street Modified 1. Does my car have an engine from another car but that engine is still made from the same car maker? (ex: Nissan 240sx with a Nissan SR20DeT or and RB26, Acura RSX with a Honda K24 from a CRV, Pontiac Fiero with a Z06 Chevy corvette engine. etc...)
2. Was my car originally non-turbo, but now it has a turbo or supercharger?
3. Do I have an aftermarket camshaft or upgraded the engine internals?
Does my car still have the factory floor carpet in the passenger compartment?
If you answered "yes" to at-least 1,2 or 3 and "yes" the the carpet question you will most likely fall in the Street Modified class. Read more about it at page 107.
So going back to our 2010 Civic example car it looks like in falls under the SP group so it would get classed as DSP. Itís in that class because it has an aftermarket lip and the full standalone ECU but most of the other mods are still allowed in Street Touring (or STX specifically). Step 4:
Once you have the car class figured out sign up for an event using your newly found class. This is done on DLBracing.com where you register for events. (More info on that in the monthly events thread later this year) There will be a list of all the car classes, pick the right one. Also note, you will see 2 listing of your car class. For example if we use DSP from our 2010 Civic Si example you will see DSP-S and DSP-R listed . S is for street tires (tread ware 140 or over) R is for ďrace tiresĒ (DOT approved tire with tread ware under 140). 99% of the time you would pick ďSĒ anyways.
DSP-S places you in the Prepared/ Modified Street Tires group.
DSP-R places you in the SCCA Competition group. (Any "-R" designation places you in SCCA Competition)Update April 2013: JDM/RHD/Import car Classing
New WSCC rule for 2013: All JDM/imported cars are legal for Street Modified, provided the car meets all the rules set in Street Modified (page 107). If you don't meet the Street Modified rules sign up for E-Mod. No import is legal for Stock, Street Touring, Prepared or Street Prepared. How to find your correct Street Modified Class:
Any FWD= SMF
Any car that was originally built as 2 seater = SSM
Anything else = SM
-Hopefully this helps finding the right class. Please post car class related question in this thread.