Class Question

[jmarshall]

I'm looking into competing in the next event but as a first timer I don't know what class I fit in. I have a 2008 Scion TC that has a dealer installed limited slip differential. Based on what I've read in the SCCA rule book this eliminates me from stock class and the only place it looks like I fit is FSP. Any clarification/input would be  greatly appreciated.

[RavynX]

I'm looking into competing in the next event but as a first timer I don't know what class I fit in. I have a 2008 Scion TC that has a dealer installed limited slip differential. Based on what I've read in the SCCA rule book this eliminates me from stock class and the only place it looks like I fit is FSP. Any clarification/input would be  greatly appreciated.

First off, welcome aboard!  Glad to see another person joining in on the fun.  As for your classing concerns...

2005-2011 Scion tC belongs in H Stock.  By "dealer installed" does that mean it's an option for the car or did you purchase an aftermarket limited slip and had the dealer install it?

Stock Class Rule 13.10 L states "Limited-slip differential, transmission and differential ratios, clutch mechanisms and carburetion, fuel injection or supercharger induction systems must be standard as herein defined."

Rule 12.4 Standard Part states "An item of standard or optional equipment that could have been ordered with the car, installed on the factory production line, and delivered through a dealer in the United States. Port-installed options provided by the factory are considered to be the same as those installed on the factory production line. Dealer-installed options or deletions (except as 68 — 2011 SCCA NATIONAL SOLO RULES required by factory directives), no matter how common or what their origin, are not included in this definition. This definition does not allow the updating or backdating of parts."

Therefore, if that limited slip that was installed in your tC was an optional equipment piece then it is allowed for Stock Class.

[jmarshall]

Thanks for the feedback. The LSD was purchased from Toyota Racing and installed at the dealership. It's not offered as factory installed option. I asked this same question to the SCCA tech dept. and this is the response that I received.

"Unfortunately with the dealer installed LSD, the car would be in the F Street Prepared class. Factory installed viscous limited slip units are allowed in Street Touring STF class, so if you are new to the sport you might ask your region if anyone would mind you running with STF. That is, if you are looking for a class to run street tires. If you run any National Tours, Pro Solos, or compete at Solo Nationals you would need to run with Street Prepared or risk being protested".

Any thoughts?

[DeRFmAN]

You'll be good to run in stf.

[RavynX]

"Unfortunately with the dealer installed LSD, the car would be in the F Street Prepared class. Factory installed viscous limited slip units are allowed in Street Touring STF class, so if you are new to the sport you might ask your region if anyone would mind you running with STF. That is, if you are looking for a class to run street tires. If you run any National Tours, Pro Solos, or compete at Solo Nationals you would need to run with Street Prepared or risk being protested".

Any thoughts?

Kudos to e-mailing SCCA about it.  I'd say you'd be alright in STF for local events but would heed their words if you go to National Tours/Pro Solos/Nationals as you will be protested.