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Last Post 18 Jul 2014 02:19 PM by  Mrsideways
New "Go-to" cars for each stock class - thoughts?
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Impala SS AutoXer
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09 Oct 2013 07:19 PM
Posted By mball on 09 Oct 2013 08:52 AM
I hope the Lexus IS300 for DS, since that is what I have.

Someone else needs to read the FasTracks more carefully 

(hint : that isn't a DStreet car...)

GTB/ZR-1
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09 Oct 2013 07:51 PM
Any guesses as to where the Alfa 4C will land (if it actually makes it here)?
RustoWRX
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09 Oct 2013 09:47 PM
I've got to think the alpha will be SS, given its close comparability with the Elise.
davebs14
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09 Oct 2013 10:19 PM
I hope and assume the C5Z will be more than adequate in AS...especially since I hope to drive one next year
01 FS Z28
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09 Oct 2013 11:14 PM

As for the Shelby GT vs. 5.0...  That nod goes to the Shelby pretty much all the way around.  More camber, lower CG, lower weight, less grippy tires means the one thing the 5.0 had an advantage on (which sure isn't handling), the power is not going to be able to be used as effectively.  The 5.0 in Brembo/Track-Pack trim has .5" more wheel width, but it's also 19" vs. 18's.... and that means you can run a relatively shorter tire on the Shelby than you can the 5.0 unless you opt for a standard 5.0 that comes on 18's, but those are 18x8 so now you have given up 1" of wheel vs. a Brembo car, and .5" to a Shelby GT.

You know I've had both, I've won in both.  I've weighed both (BTW, it's about 100 pounds difference) in F-stock trim, both on light wheels, with the same kind/size mufflers, and similar fuel loads.  

I think the BMW's will be strong and the better rear suspension and power down will balance out the lack of camber to the Ford's.  

sirele
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09 Oct 2013 11:47 PM
Wouldn't the plus minus 1" rule take care of that issue?
mball
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10 Oct 2013 09:06 AM
Posted By Impala SS AutoXer on 09 Oct 2013 07:19 PM
Posted By mball on 09 Oct 2013 08:52 AM
I hope the Lexus IS300 for DS, since that is what I have.

Someone else needs to read the FasTracks more carefully 

(hint : that isn't a DStreet car...)

Thanks for the hint. I actually need to read the FasTrack. That is awesome that I got moved to FS. I am sure that I will have no problem against the E46 M3 which has 120 more horsepower and wider wheels with the same weight. Maybe it is time to jump to STX.

Impala SS AutoXer
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10 Oct 2013 04:29 PM
Posted By mball on 10 Oct 2013 09:06 AM
Posted By Impala SS AutoXer on 09 Oct 2013 07:19 PM
Posted By mball on 09 Oct 2013 08:52 AM
I hope the Lexus IS300 for DS, since that is what I have.

Someone else needs to read the FasTracks more carefully 

(hint : that isn't a DStreet car...)

Thanks for the hint. I actually need to read the FasTrack. That is awesome that I got moved to FS. I am sure that I will have no problem against the E46 M3 which has 120 more horsepower and wider wheels with the same weight. Maybe it is time to jump to STX.

We'll see how it pans out, but I expect that on street tires that FStreet ends up being a little slower than DStreet in the dry (and of course a good bit slower in the wet).

Don't underestimate the ability of AWD to get power down in limited traction situations.   Thus why the new DStreet is spec non-Evo/STI/GTR AWD now...


RustoWRX
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13 Oct 2013 07:20 PM
You'll have plenty of power, but can the c5Z put it down on a street tire? The higher horsepower cars will be the ones most affected by the change; time will tell.
gary p
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14 Oct 2013 11:39 AM
Posted By Impala SS AutoXer on 10 Oct 2013 04:29 PM

Don't underestimate the ability of AWD to get power down in limited traction situations.   Thus why the new DStreet is spec non-Evo/STI/GTR AWD now...


The TT Quattro has won D-Stock the last 3 years so its not like an AWD at the top of D-Street would represent some sort of monumental change.  I still have faith that the  FWD cars with LSD can still hang and that D-Street will remain diverse.  If I were a serious D-Street competitor I would be worried that the Integra Type R might be the biggest beneficiary of the new tire restrictions.  Light cars tend to lose less going from R's to Streets than heavy cars. 


Dick Rasmussen
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14 Oct 2013 08:30 PM
Posted By sirele on 09 Oct 2013 11:47 PM
Wouldn't the plus minus 1" rule take care of that issue?

With the plus/minus 1" inch rule a Brembo 5.0 could go to 18X9 if the brakes, etc. fit, with the 19X9's offset plus/minus 1/4 of course, or 20X9 since the only stock wheel was 19X9.

Conversely in 2012 at least (mine) standard GT 5.0's had 18X8 or 19X8.5 options so the non Brembo car could run 19 X 8.5's, 19X8's, 20X8.5's, or even 17X8's.  

The automatic (mine) also has a taller overall second gear (3.15 versus 3.31diff with similar trans ratios) than the manual so if all else is equal (rev limit primarily) the automatic MIGHT stay off the 5.0's rev limiter better which I understand "sucks" compared to the Shelby GT's. Sam would know.  FYI the 5.0 automatic can start in 1st or 2nd (or even 3rd   and hold the gear or start in 1st be manually shifted to 2nd and then hold second which I suspect in most autocrosses would be the best approach with semi R's. With the lower traction of semi R's the power loses of the automatic might not be missed. No, I have no intention of finding out since I'm not the right guy to do the test, let alone spend the $$$.  

Edit to add: Starting in 2013 I think any gear in the automatic can be selected and held manually. Mine only does 1, 2, 3 and it can lock out 6. On the rare occasion where a downshift may be needed (3rd to 2nd or 2nd to 1st) after the shift to the taller gear the shifter can be moved to the lower gear and the trans will downshift when the revs drop enough to be "safe". I don't have a clue whether this would actually work as needed in an autox since mine is my "limo" and the only autox it did was an Evo school on oem all seasons where I started in second and barely got to the top of 2nd after crossing the finish.

Dick

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OasisTan
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15 Oct 2013 02:26 AM

I'm sure the TT will dominate D-Street.  My 3.2L TT has zero wheelspin on street tires and grip is very good with the 275/35/18 Rivals on 18x9 wheels.  I cannot imagine even trying to compete in a FWD car.  I dunno maybe I am wrong.  With that said, I'm contemplating building an SP car again.  Anyone want a fully built TT for D-Street?   It was the 2013 RTA national championship winner. ;-)  2nd in DSL and 3rd in DS.

 

IntrigueGX
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15 Oct 2013 08:54 AM
Posted By mrazny on 09 Oct 2013 11:36 AM
93-95 bmw 325's with the winter package LSD should give G-street a pretty good run. I'm forgetting if 328's had packages for "stock" eligible LSDs or if it was just an easy case swap for oem STX solutions. If yes, with how tall 2nd goes for them, they could run 15's without too much consequence.

The LSD was also a separate line option  through MY1996 on E36s though it couldn't be combined with the traction control option. BMW offers Stock/Street legal camber bolts for the front struts. They come from the factory with a rear camber adjustment.

aansorge
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16 Oct 2013 09:16 PM
An E36 got 2nd against the typeR's around 2001 in DS they could win GS.
Cito
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17 Oct 2013 11:33 AM
So, hypothetically, what is the best e36 to buy? I guess I was thinking a 325is with LSD. If you could get a 328 with LSD would that be the way to go. Also, camber bolts are legal. That makes this very interesting if true. The next trick, around here anyway, is finding an e36 that isn't modified excessively, rusted, etc. Also, is there any reason to get a 2 door versus the 4 door?
IntrigueGX
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17 Oct 2013 12:29 PM
Posted By Cito on 17 Oct 2013 11:33 AM
So, hypothetically, what is the best e36 to buy? I guess I was thinking a 325is with LSD. If you could get a 328 with LSD would that be the way to go. Also, camber bolts are legal. That makes this very interesting if true. The next trick, around here anyway, is finding an e36 that isn't modified excessively, rusted, etc. Also, is there any reason to get a 2 door versus the 4 door?

The camber bolts don't provide a ton of range, but they do work. I have to use front spacers with stock wheels and the 225/50R15 V710s. The base 4 doors had fixed rear seat backs which was both lighter and made the chassis stiffer than the 2 doors. Otherwise the 2 doors are slightly better. I don't know if the reclining rear seats come as part of the Sport package, but my 1994 325i has both. The 1996 328s are heavier than 325s. Getting a legal LSD for a 328 would most likely require taking apart an open rear drive to install it. With the new wheel allowance it might make sense to go with a 1995 325 Sport to use 17"x7" wheels.

I have been running mine in DS since 2011. I haven't really had the time or money to develop it properly. The big change I made recently was adding the Hotchkis front sway bar. I don't really like the current setup, but it seems to be faster after the front tires get some heat in them. It was a lot more fun with the stock front sway bar and a larger rear sway bar.

Stuy486
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17 Oct 2013 07:31 PM
Posted By drdisque on 07 Oct 2013 10:49 PM

I think the 350Z Nismo will do pretty well in CS as I think the fact that it has a lot more tire than the Miata will matter more on street tires. Course dependent of course. Even now, it's very course dependent.

According to Aug. Fastrack both the 350Z and 370Z NISMO models are BS cars.  Just the base 350s and 370s remain in CS.  At least that's what my understanding is, am I reading something wrong?


cashmo
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17 Oct 2013 09:58 PM
You are reading it correctly.

B-Street
Nissan
Nismo 370Z (2009-13)
Nismo 350Z (2004-2008)

C-Street
Nissan
300ZX Turbo (1990-96)
350Z (all) (2003-09, except Nismo)
370Z (2009-13, except Nismo)

If you have suggestions for making it more clear please reply. I'm hoping people will understand better when the rule book comes out, (January?).
The Nebulizer
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18 Oct 2013 01:24 PM
Posted By cashmo on 17 Oct 2013 09:58 PM
If you have suggestions for making it more clear please reply. I'm hoping people will understand better when the rule book comes out, (January?).

cashmo,

I have been seeing a lot of questions about the new Appendix A. I'm assuming it will be reposted in the upcoming Fastrack, but perhaps a direct link to the new Appendix could be posted on www.scca.com? This would make things a lot clearer and easier to find than searching for the correct month of Fastrack (July, I think?).

cashmo
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18 Oct 2013 02:11 PM
The August Fastrack has the last Street Appendix A although we've since separated G and H Street, (see the current rule book's H-Stock listings). I think the June Fastrack has the latest complete Street rules proposal. I'll suggest they post something on the SCCA website and Solomatters.
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