Blue Skying an STU Car

[23racer]

Greg, my WC VTS shows a car weight of 2500 lbs, a tire size of 245x40x17 and an allowable compression ratio of 12.8:1. I thought for STU, and I may be wrong, that I had to weigh somewhere in the 2850 lb range (big whoop), run a 235x40x17 tire (no big whoop) and bring my compression down to 11.0:1 (big $$$$ whoop) and get rid of my In-Car adjustable bars. Making these changes would cost me a ton of $$$$ and make the car uncompetitive in Canada where we still run to the older WC Touring Class rules, for the most part.

Philosophically for the class, if I was going to run a complete 3.0L Taurus engine then I would need to run a complete Taurus engine. I get it. I just need to figure out if I can make enough HP and Torque from one of those to be competitive in the class. The reason I am looking at the 3.0L is that I could use that motor in both countries and still be competitive without a ton of work. Bolting on 150 to 200 lbs of lead is an issue, but doable. The 3.0l option (if it can make competitive HP) allows me to do both. I guess I need to talk to some Duratec guys. nThanks.

Eric

[Greg Amy]

Eric, if you have a World Challenge VTS for that car, including the very latest Appendix A that the car was run on, submit that to the CRB and we will classify the car as-is, with existing mods, and a 5% weight penalty. Dyno sheets would be useful as a reality check, just in case the years you ran it don't match what we use now (2009 Appendix A).

If we approve this then you just need to conform to that VTS to be compliant to the regs.

Submit all that here:

http://www.crbscca.com

GA

[23racer]

Greg, I am sending you a copy of your response to me about the CRB via PM. I don't know if anything has changed, but I would be delighted if I could run the car as is with only a 125 lb penalty.

Eric

[Greg Amy]

Yes, I remember you were rejected on that very early 2011. The CRB changed it mind and now does allow us to consider WC Touring cars for STU, with appropriate VTS and Appendix A, and with a weight penalty.

Resubmit that, we'll reconsider it.

GA

[23racer]

Thanks for the advice, I appreciate it. I will resubmit in January after the holidays. It would be fun to run the car as is, just to see how it does on new style tires.

Anybody have some of the new Conti's or Pirelli's? Just kidding, sorta.....

Eric

[23racer]

Well I resubmitted to see if the car is legal now. It will be interesting to see what happens.



Big issues are the higher compression, low weight and bigger tires. In Canada, my car can run in WC trim at 2550 weight with driver. With a 5% penalty in SCCA Club, we are looking at 2625.

All this, just because I want to do a couple of races at Mid Ohio ....... Why Mid Ohio, just because.

Eric

[Matt93SE]

The way the rules are written, you can supply a WC VTS to SCCA and once approved, you're legal to run it at 105% weight. I can't see why they can complain about that if they said it in the rules and your car meets the VTS to the letter.

also, on the tires... there's no tire size limit- just a 17x8 max wheel size. 245/40/17 tires are just fine. I run everything from 225/45/17 to 245/45/17 depending on what I can find on the used market.