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Old 05-07-2002, 02:16 AM   #1
WRXnFX
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Default SCCA update

Should I just post a sticky for the SCCA events?

Where's AutoXr when we need the info?

Isn't there a May Day road rally and the June driving school?

Winslow
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Old 05-08-2002, 10:32 PM   #2
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Not sure about a "sticky", Winslow, what are they? Does it require special access?

The second SCCA Championship event of the year will be held in conjunction with the British Sports Car Club on Monday, May 27, (Memmorial Day) at Chugiak High School.

Too bad we can't get a reasonably priced Lotus Elise in the US or I'd be driving one of them to this event

I will be the course designer for this one. As usual, I will try to make something open and flowing, but that's hard to do at a place like Chugiak. So, it may take a bit more patience to come up with a design that everyone will enjoy.

Any questions?
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Old 05-08-2002, 10:44 PM   #3
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Here's a generic list of SCCA Solo II events for the rest of the year:
  • 5/27 British Invasion @ Chugiak HS
  • 6/8 Solo School @ Bartlett HS
  • 6/9 Championship @ Bartlett HS
  • 6/22 Championship @ Nenana airport
  • 6/23 Championship @ Nenana airpoty
  • 7/14 Championship @ Mat-Su
  • 7/28 Championship @ Bartlett HS
  • 8/10 Championship @ Mat-Su
  • 8/25 Championship @ Bartlett HS
  • 9/8 Last Blast @ Bartlett HS
Kris will be the course designer for the 8/25 event. I will try to keep this updated as changes occur.
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Old 05-09-2002, 01:40 AM   #4
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I got an idea for the course already....I am thinking of a big circle!

Kris
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Old 05-09-2002, 01:51 AM   #5
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Figure-8, man! Two cars on course!!!
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Old 05-09-2002, 01:53 AM   #6
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How about Nascar style, one big oval! Except, you can make it right hand turns as not to infringe on Nascar's patent of the lefthand turn course....

Scott
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Old 05-10-2002, 10:23 AM   #7
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How about a drift pad so the rear wheel drive power monsters can have some fun.
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Old 05-10-2002, 04:08 PM   #8
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I wil probably have a drift pad in there someplace, probably at the north end. Also thinking about a 60 ft. slalom along one side since we usually do the tighter 45 ft slaloms.

Any other resonable requests?

[EDIT] Sorry about that, I was talking about my event at Chugiak on Memorial Day. Didn't mean to steal your thunder, Kris [/EDIT]
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Old 05-13-2002, 01:57 AM   #9
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Thumbs up

Here's something that I received on the Street Touring list server. It was posted by Branwell McClory:

Subject: Some info for new WRX drivers in STX

Here are some issues I have come cross with the WRX wagon and what I did to address them. This info might be of some interest to some of the new folks to STX and the WRX.

In stock form, the WRX has two basic issues that need to be addressed for best autoX performance.

1) Turbo spoolup point.
Stock there is little turbo response below 3000 rpm and most autoX courses I have driven can easily got you below that point in second gear on slower corners. This requires that you get into first gear. Given that the transmission does not like to go into first above 15mph or so, you have to double clutch. Unless you are good at it, it leads to a lack of smoothness that leads to slow times.

2) Push.
The car really pushes hard in corners. About the only thing you can do is upset the car entering the turn just before rotation. While this technique does work to some extent, its not all that predictable and again, slow times are the result.

To address point 1)
I tried a 3" turbo back exhaust system. This let the power come on 500RPMs earlier but I had issues with bumps in the power band. The next step was to go to a Scoobysport downpipe with the stock WRX tailend. This let the power come on 600rpm sooner and the power band is smooth. The next step was to ditch the 17" rims with 45 series tires ( I had been AutoXing on 225/45-17 V700's in the ESP class ) and go to 16" rims with 45
series tires. With these two changes I can now stay in second gear and have a lot of power on corner exits. So far, I have not had to get into third. Interestingly, the difference in power between the 16" / 45 series tires compared to the 17" / 45's feels like the difference between driving with he air conditioning on and off. The 16" make that much difference.

To address point 2).
I tried DMS-40 coilovers. Did not like them. I tried M2-40's and while they where better, they did not solve the problem and given that I drive the car 100 miles a day, just ended up not being suitable. I went back to the stock suspension and added the 20mm rear sway bar from a WRX sedan. This setup solved the push issue and left the car feeling comfortable, fast
and well balanced. Saying that, coilovers with the correct bars would be faster still, but I needed a softer ride so they wont work out for me. Interestingly, the stock suspension with a firmer rear bar, while having less push then coilovers with the stock rear bar, is also LESS spin prone. Go figure, hmmmm.

Tires:
The stock Re-92 tires are easy to drive but are not all that suitable for AutoX. I tried Kumho 712 in the stock size. Not much better then stock tires. I tried the Falken Azenis tires in the stock size ( 205/55-16 ). Much better grip but snappy on the edge. I tried Kumho V700's. 225/45-17. Again more grip and very progressive on the edge. I tried Falken Azenis tires in the 215/45-16 size on 2.5RS 7" rims. Not as much grip as the V700's but just as progressive on the edge. The smaller rolling diameter also gives much better acceleration.

Breaks: <EDIT, I think he means Brakes here>
The WRX anti lock system does not lead to very good breaking. I recommend learning how to break with out engaging it. One thing that helps a lot is to break softly to get the weight transfer, and then break heavily. Just stomping on the breaks will not give best results.

Conclusion:
For STX, the 16" rims with 45 series tires easily outperforms 17" rims with 45 series tires. It helps a lot with acceleration and keeping the turbo in the boost range. A good downpipe will also help a bunch. On suspension, the rear bar is a must have item and the first thing you should do.

Hope this info is of some use to new comers.

Branwell
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Old 05-13-2002, 02:10 AM   #10
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Quote:
I tried DMS-40 coilovers. Did not like them. I tried M2-40's and while they where better, they did not solve the problem and given that I drive the car 100 miles a day, just ended up not being suitable. I went back to the stock suspension and added the 20mm rear sway bar from a WRX sedan. This setup solved the push issue and left the car feeling comfortable, fast
For some reason, people believe the suspension will cure their handling problems.

Good tire/rim choice. That should help at the drags, too.

Quote:
Stock there is little turbo response below 3000 rpm and most autoX courses I have driven can easily got you below that point in second gear on slower corners. This requires that you get into first gear. Given that the transmission does not like to go into first above 15mph or so, you have to double clutch. Unless you are good at it, it leads to a lack of smoothness that leads to slow times.
This really depends on the course. Did anyone even shift out of first at Chugiak? The course looked really small.

Winslow
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Old 05-13-2002, 02:28 AM   #11
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Good tire and rim choice is a must. The V700's that he talks about are not allowed in STX since a street tire with a wear rating of 140+ must be used. The Azenis seems to be the tire of choice this year.

Suspension helps quite a bit when you have to turn the wheel. I think the real benefit of acoil-over system comes into play when you are trying to get that last 1/2 second off your time.

The course last weekend was good for the area available. I was in second at two points on the course and downshifted on the ends. Without shifting I guess that I would have been a second or so slower. The next event I hope to design a course where only one area requires a downshift.

It's all a bunch of trade-offs. To get a car that works really well in autocross gives up quite a bit at the drags and vica versa. For those that do both, a few easily swappable components seem to be the best bet.
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Old 05-13-2002, 02:47 AM   #12
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I'm getting coilovers to lower my car at will. Whatever gains in handling is a bonus.
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Old 05-13-2002, 02:54 AM   #13
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I figure the ALK would help better in the turns along with good camber correction and sway bars to stiffen up the chassis. I see suspension being more benficial on a rally course with varying road terrain. Falken Azenis are definitely good tires. I give them a thumbs up.

Winslow
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Old 05-13-2002, 02:59 AM   #14
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Quote:
Originally posted by WRXnFX1974
Falken Azenis are definitely good tires. I give them a thumbs up.

Winslow
i give them one of these too!
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Old 05-13-2002, 03:01 AM   #15
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I gots to ask Jake if he installed his Azenis yet. I heard they were good tires and the thread pattern looks aggressive. What about the Yokohama Paradas??
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Old 05-13-2002, 03:31 PM   #16
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Paradas are supposed to be OK, but not outstanding. Not sure about the Spec 2 version since I haven't seen any reviews of it yet. Other popular street tires are the BFG G-Force KD, Bridgestone PP S02 & S03s.

Winslow, I canceled my ALKs since they would have up-classed me with the SCCA. I did get some brake lines and pads ordered though.
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Old 05-13-2002, 03:42 PM   #17
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Let me know when you want to do the brake lines. Did you get some brake fluid, too? The Goodridge lines are excellent.

Winslow
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Old 05-13-2002, 09:23 PM   #18
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I went with the Goodridge brake lines and Project Mu B-Force front pads. I'll pick up the fluid locally since I haven't seen a big difference in the short term between different brands.
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