Here's my question to Doug Gill from the SCCA rules (tech) on car classification for our 2.4 SS trying to determin eif we have to run in D Stock with SS/SCs or whether we get a crack at G Stock..

Hi, George,
The Chevrolet Cobalt SS 2.4L (normally-aspirated) is classed in GS (G Stock) per the May 2006 FasTrack. http://www.scca.com/_FileLibrary/File/06-5-fastrack.pdf

I don’t believe the Saturn Ion 2.4L has been classed at this time. I look for it to be classed like the Cobalt 2.4L. Also, the 1st paragraph of Appendix A says:

It is SCCA’s intention to class all essentially identical vehicles from the same
manufacturer (which differ only cosmetically or in nominal marque
designation) in the same class. If a version is omitted from the class listing,
and is otherwise eligible for the category, then its classification will be the
same as the equivalent car which is listed.

Hope this helps.
- Doug
Doug Gill
SCCA Solo Technical Manager
P O Box 19400
Topeka, KS 66619-0400

 

I was gonna say, I knew you guys were in G-stock for sure, but you'd be SM with the ECU flash. Or STS with the intake if you don't tell anyone about the flash...

 

ECU flash is perfectly legal for STS as well as the intake and shorty header with exhaust. If we wanted to do STX we could opt for the downpipe with the hi-flo cat and through in a G85 slip

 

[QUOTE=GTP]Here's my question to Doug Gill from the SCCA rules (tech) on car classification for our 2.4 SS trying to determin eif we have to run in D Stock with SS/SCs or whether we get a crack at G Stock..

DS is tough - the Gen I Neon ACR still runs in DS, if I remember correctly, and they're still very competitive. Mine is retired and my son-in-law drives it on the street with a 2.4 PT Cruiser motor (no longer legal for stock with that!). My ACR out-handled anything I've driven, including Lotus 7's and Europas. The SS/SC will need that power to overcome the handling deficit. The SS/NA would be out-classed.

 

Neon ACR is in G-stock. I've never really had too much of problem with D-stock. We're pretty competitive with the WRX's that usually dominate, I usually end up in the middle depending on the skill of the other drivers. That and the ITR are the only cars that put up much of a fight in D-stock unless there's a 3-series with a damn good driver.

 

Kinda beside the point, but shouldn't this be in the autocross section?

 

i would say it is not legal in STS but i would run it there and just not say anything. I ran in G-stock in 04 in my cav ls sport with no intake res and port matched intake manifold and a ported exhaust manifold. and plenty of people said man that thing is mean

 

post any questions like this and SCCA rules here. http://sccaforums.com/forums/32/ShowForum.aspx

 

what are the rules on using aftermarket springs/struts? Wouldn't mind testing the Eibach/Koni set up at an autocross event.

 

Why when I can go directly to the rules and tech classification MAN himself Doug Gil. He answered my question and I posted it here.

The ECM reflash in STS is perfectly legal. Its housed within the same ECM box and is within the letter of the rules here:

14.10. ENGINE
Engine and transmission must remain unmodified, including emissions equipment, except as noted below:
The air intake system up to, but not including, the engine inlet may be modified or replaced. For naturally aspirated engines, the engine inlet is the inlet to the throttle body or carburetor. For turbocharged or supercharged engines, the engine inlet is the compressor inlet. The existing structure of the car may not be modified for the passage of ducting from the air cleaner to the engine inlet. Holes may be drilled for mounting.

Headers, emissions-legal.
The engine management system parameters and operations may be modified only via the methods listed below. Any and all modifications must meet or exceed the applicable US DOT emissions standards for the year, make, and model of the car. These allowances also apply to forced induction cars, except that no changes to standard boost levels, intercoolers, or boost controls are permitted. Boost changes indirectly resulting from allowed modifications are permissible, but directly altering or modifying the boost or turbo controls, either mechanically or electronically, is strictly prohibited.

Reprogrammed ECU may be used in the standard housing. Traction control parameters may not be altered. Altered engine controllers may not alter boost levels in forced induction engines.

Electronic components may be installed inline between an engine's sensors and ECU. These components may alter the signal coming from the sensor in order to affect the ECU's operation of the engine management system. Example: fuel controllers that modify the signal coming from an airflow sensor.

Fuel pressure regulators may be replaced in lieu of electronic alterations to the fuel system. It is not permitted to electronically modify the fuel system AND replace a fuel pressure regulator.

Ignition timing may be set at any point on factory adjustable distributor ignition systems.
VTEC controllers and other devices may be used which alter the timing of factory standard electronic variable valve timing systems.

The mass airflow sensor must remain in its approximate original location.
All STS vehicles must comply with the Federal 49-state safety and tailpipe emissions test requirements as a minimum.

 

gtrp thats right! i was thinking about when i asked about piggybacks ane i was told no! but in STS unless they changed they rules no high flow cats and no messing with the cat at all so seing that when you install most aftermarket headers you have to cut the down pipe that the cat is welded to thats a no no. now we need to get that rule changed for next year.

 

I don't think they're gonna budge on that cat rule..its been there since I went to nationals in the first year of STS...kinda counter intuitive to say the least as most people modifying put a hi=flow cat on there. However we can do the shorty header (for what its worth) and a cat back (also for what its worth).