SCCA C Stock Discussion

[qoncept]

I had my first event of the season yesterday. It was 45 degrees and pouring and I was lazy so I stayed on the stock all seasons. Pretty miserable day but the driving was fun.

I doubt there are going to be many people sticking with race tires. Yesterday reminded me of how nice it was to just throw a cooler and helmet in the car and go. Dragging the trailer and changing tires gets old. Once I get through these tires I think I'll be headed to CS.

[DylanFRS]

Originally Posted by qoncept

I Yesterday reminded me of how nice it was to just throw a cooler and helmet in the car and go. Dragging the trailer and changing tires gets old. Once I get through these tires I think I'll be headed to CS.

That is the point i have gotten to in autocross as well. I just want to show up and drive.

[qoncept]

Originally Posted by DylanFRS

That is the point i have gotten to in autocross as well. I just want to show up and drive.

I kind of learned from the old guys.. they stay in stock class and make everything as easy as possible. I used to show up with tires thrown in the trunk, a crappy jack and a 4-way. Now I have a trailer, impact, torque wrench, gloves and a torque wrench and do it right. So it's about half as awful as it used to be. But it's really frustrating when I'm the only guy left in the parking lot at the end of the day changing tires.

[renfield90]

Originally Posted by AustinTX

Is there a significant setup change between street/race tires?

On my setup at least, I'd say yes. I get a fairly neutral car if I'm on brand new street tires, but a fairly pushy car with fresh race tires. I'm still on OEM shocks, but if I went back to race tires I'd want aftermarket shocks to try and tune some of that push out.

Is anyone planning to go to Nationals this year and run CSR?

[EN2_Squirrel]

I did my first prosolo over the weekend and while i was on course working noticed that the 370z was also classed in C street. It won CS and was a couple thousandths off the winning time of B street. Are the twins or even a NC miata capable of competing with it. Considering you can fit a very large tire to help with all the power. I was curious.



meant to put this under c street discussion

[tahdizzle]

In my opinion, with the right tires it would depend on the course.

On a tight more technical course the twins shine. On a more open course they just don't have the lateral acceleration.

[edj]

fyi, i have one new Hoosier A6 tire for sale.

see ad here: Hoosier

[TrqlessWonder]

Originally Posted by renfield90

On my setup at least, I'd say yes. I get a fairly neutral car if I'm on brand new street tires, but a fairly pushy car with fresh race tires. I'm still on OEM shocks, but if I went back to race tires I'd want aftermarket shocks to try and tune some of that push out.

Is anyone planning to go to Nationals this year and run CSR?

They definitely behave differently. Still way early in my car development, though. (only the r-comps, camber and alignment at the moment - 20mm whiteline coming this week.)

I unhooked the rear bar for my first r-comp event, and that felt pretty good, did fairly well. It was a non-scca club so it's a little hard to gauge my performance. I could just barely rotate the rear under power in sweepers. And it was very stable in the slalom. Although the body roll was buick-like, and the rear of the car flopped like it was the World Cup. But putting power down was not an issue. Almost can't overwhelm the hoosiers.

Made no changes other than different venue and too cold for hoosiers, so I ran on the OEM tires and...yikes. I had a real hard time keeping the back end in the back, hard time putting the tiny amount of power down, and the low-speed understeer was infuriating. And I did poorly.

Separately, I then did the NJ Tour. I won my class (of one) but I got raw-timed on sunday by a CS RX-8. Saturday, I only avoided that by a tiny margin.

Saturday I did without the rear bar, and Sunday I did with it hooked back up. Car felt better sunday, but I performed worse relative to CS. Also, was running 36-37F and 33-34R with the bar unhooked, and was down at 33/32 with it back up, and I'm still not using all of the tire. More importantly, It was in the mid-60's that weekend, and I built up NO heat in the tires. Barely above ambient. Anyone run across that?

We'll see how much the front bar helps with getting the tires working. I suspect I'll need better shocks than OE, but that's going to be an off-season thing. Anyhow, season-long TnT continues....next stop, Ralph Wilson Stadium.

[Quentin]

CS offset question: I have a line on some of the optional BBS wheels you could get for the WRX back in the day. Light, 17"x7". Offset is +53. You can be 6 mm from stock offset, which these would be. Thing is, 5mm more sunk is pretty much the opposite of what I'd want. So, can I run 10mm spacers and swap out my lugs for something longer and stay "stock"? Spacers are legal to correct offset... but what about lugs to allow proper thread engagement?

Second, can I run the TRD sway bar set and/or springs? I'm mostly wanting to get back into autox for fun but I'd like the very few mods I'm planning to align with stock class. Sounds like the TRD exhaust and air filter are kosher regardless.

[Kido1986]

Yes, extended studs are allowed in CS, and you'll need them for any spacer over 3mm.

You cannot use TRD stuff. Even first-party aftermarket parts are not allowed. You could use the RS model parts if you COMPLETELY convert if you have the matching year car. Not a cheap proposition

[Quentin]

Originally Posted by Kido1986

Yes, extended studs are allowed in CS, and you'll need them for any spacer over 3mm.

You cannot use TRD stuff. Even first-party aftermarket parts are not allowed. You could use the RS model parts if you COMPLETELY convert if you have the matching year car. Not a cheap proposition

Good to know. TRD exhaust still kosher since it is just a cat back? I'm not totally convinced on the springs anyway, but the sways would have been nice.

[Kido1986]

Originally Posted by Quentin

Good to know. TRD exhaust still kosher since it is just a cat back? I'm not totally convinced on the springs anyway, but the sways would have been nice.

Correct, the catback is fair game. You can run s straight pipe for your catback if you really want (and are masochistic), as long as it is full length.

Trust me, these cars need NO extra rear sway bar. Sway bars are for balancing, not 'stiffer is better'. This car needs more front bar, which means more rear bar would counter productive.

Check out the "C Street questions" link in my signature for more information on setup.

[Quentin]

Originally Posted by Kido1986

Correct, the catback is fair game. You can run s straight pipe for your catback if you really want (and are masochistic), as long as it is full length.

Trust me, these cars need NO extra rear sway bar. Sway bars are for balancing, not 'stiffer is better'. This car needs more front bar, which means more rear bar would counter productive.

Check out the "C Street questions" link in my signature for more information on setup.

Excellent, thanks. (I have signatures and avatars hidden on this forum, so that is why I didn't notice your c-stock info.) I'm fine with the TRD exhaust. I like the OEM look.

[neurokinetik]

Originally Posted by qoncept

I doubt there are going to be many people sticking with race tires. Yesterday reminded me of how nice it was to just throw a cooler and helmet in the car and go. Dragging the trailer and changing tires gets old. Once I get through these tires I think I'll be headed to CS.

This is exactly why I went from ES to STR in my old Miata, and why I went to STX in the Toyobaru. Not changing tires at the beginning and end of every event takes away the worst part of the entire experience (except maybe working course when the FJ karts are running).