SCCA XSA thread
 

Anyone else running this class besides me?

I am.... I have a supercharger which was putting me in SM with all the gutted cars with mine being a daily driver. XSA is pretty slim though. Last year I ran NSPAX with the XSA index and found that worked well.

Sent from my Pixel 5 using Tapatalk

That was what I wanted to avoid because before i totaled my engine everyone locally left stx. I didn't what to run slicks or have to cage up. So I'm just standard STX build but now with a JRSC and a c38 hbp.

TIL this class exists. I'm a little shy of an STX build, but with a C30 supercharger. I'm purely running for fun, but had SM and TO letters cut and delivered at the start of the season.

I don't think I've seen a car at any of the local events in an SX class, but I'll keep an eye out.

XA/XB were created as a "CAM for everyone" supplemental class in order to help people get away from the restrictive rules of the regular classes but for some reason it seems like most regions really haven't embraced the class like the they have CAM. I still see instances of new people being thrown into SP/Prepared classes instead of XA/XB because of some random mod which can be frustrating and cost the club potential new members.

It looks like the timing sort of sucked - lots of info was missed as COVID consumed the new cycle, and a rather fringe SCCA classification probably didn't make the cut. The SCCA post announcing it was January 2020.

I applaud them for expanding to FI kits and still separating the daily driver builds from more dedicated racecars. Hopefully we see the class grow.

FWIW, there are some XS* cars here in the DC region, the DC Tour has 9 in XSA, including Brian Karwan in his 86. We usually had a few in XSA and B at events last year.

Here in the Ohio Valley Region we've had decent subscription to Xtreme Street.

Fun fact: The SCCA started the class in 2020 and abbreviated it as XSA and XSB. About half way through the season they seem to have changed it to just XA and XB. In our region we had a local "class" that was for region members only and was just a straight PAX index class for the drivers. We (my predecessors) had designated it with an "X" but that got thrown out the window when the SCCA changed the designation for Xtreme Street. :bs:

Anyway, it's just XA and XB now apparently.

don't think so
https://cdn.connectsites.net/user_fi...pdf?1647612527

I missed last season with an exploded engine but both NEPA and Susuquehanna both have strong XS classes, but I dont think anyone is trying to "break" the class. Just some people trying to go fast

The change to XA/XB was noted in a FasTrack but they never updated the supplement class rule sheet.

I thought so too. You're also right that they have not updated the ruleset but, as indicated, they did it in a FasTrack update.

He won't have the 86 ready in time for the tour.

Has anyone swapped their rear diff? I was thinking getting an is350 in 3.7 but they are pretty rare. Looking to see what others have done

I run XA exclusively since it was announced.

Build list:

Engine:
Full-Race BorgWarner EFR 7163 turbo kit
1050x Injectors
Verus AOS
FBM 485 fuel pump

Suspension:
Fortune Auto 500 series 9k/9k
Stock tS suspension bitties
Verus RCLAs

Drivetrain:
IRP shifter
Whiteline/perrin transmission mount combo
Whiteline rear diff bushings
Whiteline rear subframe bushings.

Aero:
tS wing
Verus Composite front splitter
Verus Canards
Verus Hood vents

Wheels:
18x9.5 random wheels

Tires:
255/35/r18 SX2 RS 200tw tires. Previously ran the Nankang CR-1s.
https://i.imgur.com/2e58JRv.jpg

Anyone that saying the class name changed to just XA or XB care to post which Fastrack it was addressed? I've looked over the last three years and don't see that mentioned once. Maybe I'm missing it?

This thread died but hoping it grabs the right attention. Is anyone running the 275/40/17 RT660 on the rear? I'm not prepared to quite do a rear gear ratio change and was hoping these should fit without much work.

depends on wheel offset. +42-45 should fit it easier than say a +38 would. I barely made my 275 hoosiers fit in the back on a +38

Thanks. My RPF1s are ET45 so that would be easy to do.

pumping this thread again. So since i took forever to get all my stuff together it looks like they changed the rules and i cant run a difuser. Would that mean that I can't even put a sheet of something over the big gaping void of where the OEM muffler was? pinging @Chuckls

I sold my FRS but I'm still putting together a different XSA car. The aero rules are going to change and according to the FB group, we should have an idea of the new rules earlyish December.

The current and soon to be out of date rules have a loophole for the diffuser, since it says 6" forward of the rear bumper and that includes the bumper piece just behind the rear wheels in most cases which allows a true diffuser from most OTS offerings.

I was wondering about that because i verus diffuser would probably fit the rules if you get the "non aggressive" one

The Verus rear diffuser fits the loophole ruling no problems.

I wish I were more help, but I've moved on from XSA. HPDE Champ #1 now.

I want it for track use as well. I'm worried they might tighten that up but get more loose on wings. So, I wait. :)

I'll sell you my tS wing. It fits XA rules ;)

No thanks. Even if I wanted it, it wouldn't work on my car. I sold my twins.

Just bumping the thread to see what everyone is doing this year.

I did it for the first couple of events since I installed Flex Fuel in the off season. Ultimately I ended up just moving to ESP since the PAX is better on that and I had an opportunity to have a bit of direct competition with someone running along in that class in our region.

I'm not good enough to be overall pax competitive, I'm just trying to go fast lol. Doesn't the ESP and the rest of those classes require you to gut your interior to be competitive? That's also something I wasn't willing to do. There are some strange cars in his class, I will give you that.

As I understand it (and even though I'm a Solo Chair, I'm not a rules expert), Street Prepared classes do still require that you have an interior at least from the front seats forward.

Street Prepared (again, as I understand it) allows you to do the following things beyond Street and Street Touring:

R Compound DOT tires (Hoosier A7 for example)
Metal suspension bearings where they were not metal before
Different fuels such as E85
Aero changes within the rules

In my case, I added Flex Fuel so that took me immediately out of ST. I had a spare set of slicks that I wanted to use for track days so I decided to have some fun.

I actually looked it up and it wasn't as much as I thought but gives examples of ac removal as well as radio and airbags. It is the next logical step from stx but for whatever reason locally very few people run it unlike xsa.

Street Prepared definitely lets you make some decent mods. I doubt I would get rid of AC but I might consider getting rid of airbags if I cage the car for track driving. I'm able to run ESP this year because of the limited prep. DSP is the real class with all the stuff done. However, it used to be CSP for full prep and that's a big jump.