I just started autocoss this year and have done some mods to my car. Now i'm worried about what class to be looking at and what tires to pick up. This year I just ran on street tires.

Can anyone tell me what class would be the best to go for at this point, or am i too late by the mods I've done so far. I want to look at engine upgrades in the next 12 months and really like the option of a new 3.6 in my 1978 911sc. Though I was told by the shop owner that there is a 3.0 liter class that some guys like to stay in as well (might be club racing?).

What tires would be a good match for my mods. Are there any tires out there that will put up with a few miles on the street. I notice some guys drive to the course on racing tires if it's only a few miles. Is this a pretty bad idea to consider?

Here is what I have now:

1978 911 SC/ RS interior/ Zero Option Car
Stock engine/trans
Fixed racing seats and 5 point harnesses. (Sparco Evos)
22/29 mm Sander Torsion bars
Smart racing anti-sway bars. (They don't use the factory mounts on the front).

From what I can tell reading things on the internet I think I am in A Class, but I dont' know anyone around here that seems to know much about it all. I don't think I like the A Class very much........those cars look very fast.

Production/Stock/Perpared/Touring ????

Any help would be great. My club here (NON-PCA) told me "all porsches are BS cars." They didn't seem care about my seats or anything else on the car.

Any help would be great.

 

Hello!

Or what class will I be in and what tire do I buy to finish things up and get ready for next seaon.

Come on, are you guys tired of this question or something?

 

Check here to Classify your car:

http://www.moutons.org/sccasolo/index.shtml


I think you will be in ASP since you have any non-factory mods to your car (torsion bars, adjustable sways etc).FWIW, my 1973.5T is classed as an ASP due toi adjustible sways, turbo tie rods and turbo valve covers. One of my regular class competitors is a '73 that has been modded with a 3.2L motronic and is a RS Replica. You will see Hoosiers, Kumho Victos, or Anzeis on the speedy cars.

Where in Orygun are you?

 

You should be in ASP for SCCA sanctioned autocrosses, which will put you against some tough competition. I don't know what PCA class you will fall under but you can get this information from GGR web site. Kumho's are less expensive than Hoosiers. It all depends on your budget.

 

Looks like i'm in ASP from the chart. That looks like a tough group. I better learn how to drive and get some better tires!

Harry, I'm in Salem.

This is the salem autox club. I did event #1 3 4 6 and the hill climb. Look for the 911 on the list below all the neons and fiats. Pretty sad. I need to do better next year...

http://www.wmclub.org/autocross.html

 

Remember, the TTOD guys didn't get there overnight. You need lots of seat time. Next year, come up to the PCA AutoX at PIR (check the WEB site www.oregonpca.org). Friendly group, ususally 6-9 runs, long courses (1+ minutes). etc. SCCA also puts on a good show but you don't get as many runs.

 

I run the Yokohama A032r soft compounds for a/x. They're awesome.

KT

 

If you want to see what tires to run to win. Check the results at the SCCA Nationals for Solo2 (http://www.scca.com/Event/Event.asp?...ef=04-solonats)

 

"Free information may only be worth what you paid for it!"

IMHO: Your top tire choices are Kumho 710's or the Hoosier A3S03' or the A3S04. The "A" on the Hoosier's designate a softer compound for Auto-X.

Since you live in a rather wet area, if you want to drive to the events (hopefully a short distance) you might consider the Kumho Victoracers. Where as the above tires have NO REAL tread the Victoracers and Kumho Excta's have some tread for those damp days. They also last a little longer. My first choice would be to change to race tires at the event. I actully saw a 911 at the SCCA Nationals with a small tire trailer setup.

In most cases more tire is better for Auto-X. However, a lot of factors come into play especially with the Porsche. If you can't get enough heat in the tires then a smaller size is prob better. You have enough adjustability with your suspension that this should not be a problem. However, a good starting point is what are the fast boys using. Don't be afraid to ask them for help.

Also, for PCA events tire size and compound come into play. Points are added (that effect your class) as the size goes up and also as the TREADWARE RATING gets lower.

One thing to keep in mind. Seat time, seat time, seat time. What I recommend to most people is first get the car setup so it's reasonably balanced. Then work on your driving. Only when you can put down back to back runs, 4 or 5 in a row within a half second will you be able to determine if changes to the car are making it faster or if you are just getting quicker.

Good luck and ......
Have Fun! Steve