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Running Autocross tommorow in my 93 C4, tips?

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Old 01-06-2007, 03:09 PM
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steve40th
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Default Running Autocross tommorow in my 93 C4, tips?

I have a auto, 3.75 geared base suspension upgraded with ZO7 sway bars, urethane bushing, and Blstein heavy duty shocks. The car was just aligned with VB&P aggressive street alignment, and I have 275 17 BFG KD's up front and 315 BFG KD's out back.
The car also has Camber bar, and RD Racing ST frame. ANy thing that could help me enjoy the day, let me know. Steve
Old 01-06-2007, 03:22 PM
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arkangel81
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slow is smooth and smooth is fast... when your out there just roll on the throttle, dont be harsh with your brakes and gas it will only slow you down, or make you spin out. also run it slow the first few times, which was very difficult for me to do, it will pay off huge after you learn how that sea of cones is set up, it gets confusing out there, lastly, have a blast, its some of the most fun i have ever had!
Old 01-06-2007, 03:45 PM
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steve40th
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Originally Posted by arkangel81
slow is smooth and smooth is fast... when your out there just roll on the throttle, dont be harsh with your brakes and gas it will only slow you down, or make you spin out. also run it slow the first few times, which was very difficult for me to do, it will pay off huge after you learn how that sea of cones is set up, it gets confusing out there, lastly, have a blast, its some of the most fun i have ever had!
Thanks. I know its going to be hard to control myself and the throttle.
Old 01-06-2007, 04:40 PM
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goatts
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Have someone experienced ride with you, then try to ride with some others in their cars. Have fun.
Old 01-06-2007, 05:06 PM
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Slalom4me
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Originally Posted by steve40th
The car was just aligned with VB&P aggressive street alignment...
The Vette Brakes and Products alignment specs

I looked to review what rear toe setting is called for in the
Advanced Street settings - they specify 1/8". If this is how
the shop has set the car, then there shouldn't be too much
incidence of snap oversteer in maneuvers combining heavy
braking just prior to turning in.

I found that as I reduced the rear toe, this increased the tendency
of the car to come around. On the alignment rack, we observed
that raising the rear (as occurs under braking) causes the toe
setting to change in the direction of toe out. If you are not
expecting it, the results can be unnerving or worse.

Have you added engine oil to raise the level above the fill line?

.
Old 01-06-2007, 07:02 PM
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Race Prepared
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Depending on the layout of the track and the speeds it allows you might:

* Walk the track in reverse prior to the event starting
* On your first run, run slower than "competitive mode" and mark your brake points & get a feel of the flow of the track.
* Be smooth but aggressive - your car can do more than you think
* Watch your tire pressures - check after every run & adjust.
* Visit with the other racers - learn what you can from them
* ABOVE ALL - JUST HAVE FUN!

Last edited by Race Prepared; 01-08-2007 at 05:23 PM.
Old 01-06-2007, 07:51 PM
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c4cruiser
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This link will give you lots of tips if this is your first autocross event: http://www.tirerack.com/features/solo2/handbook.htm
Old 01-06-2007, 08:44 PM
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corvettenilesg
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My friend has a 1993 C4 corvette he autocross. Make sure you have plenty of gas, his will fuel starve when he runs the fuel to low. This happens in fast turns, where the fuel moves away from the pickup. Have fun.
Old 01-07-2007, 12:32 AM
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steve40th
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Originally Posted by Slalom4me
The Vette Brakes and Products alignment specs

I looked to review what rear toe setting is called for in the
Advanced Street settings - they specify 1/8". If this is how
the shop has set the car, then there shouldn't be too much
incidence of snap oversteer in maneuvers combining heavy
braking just prior to turning in.

I found that as I reduced the rear toe, this increased the tendency
of the car to come around. On the alignment rack, we observed
that raising the rear (as occurs under braking) causes the toe
setting to change in the direction of toe out. If you are not
expecting it, the results can be unnerving or worse.

Have you added engine oil to raise the level above the fill line?

.
I plan on adding a half a quart extra.
Old 01-07-2007, 12:33 AM
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steve40th
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Originally Posted by corvettenilesg
My friend has a 1993 C4 corvette he autocross. Make sure you have plenty of gas, his will fuel starve when he runs the fuel to low. This happens in fast turns, where the fuel moves away from the pickup. Have fun.
Thanks, I have had this happen many times on aggressive off ramps etc.
I have 3/4 tank now.
Old 01-07-2007, 11:48 PM
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Slalom4me
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Well, how did the event turn out?

.
Old 01-08-2007, 02:32 AM
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steve40th
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Originally Posted by Slalom4me
Well, how did the event turn out?

.
Sorry to say it was rained, well so I thought. It was pouring where I live for a few hours past sign up so I didnt go. Next event 28th , I will go.
Old 01-08-2007, 03:12 PM
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z28cp
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Autocrosses don't stop for no stinkin' rain!!

Dave Z.
Old 01-08-2007, 05:24 PM
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Race Prepared
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Originally Posted by corvettenilesg
My friend has a 1993 C4 corvette he autocross. Make sure you have plenty of gas, his will fuel starve when he runs the fuel to low. This happens in fast turns, where the fuel moves away from the pickup. Have fun.
Old 01-08-2007, 08:02 PM
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steve40th
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Originally Posted by z28cp
Autocrosses don't stop for no stinkin' rain!!

Dave Z.
No excuse I know, I apologize and will reprimand myself after finishing this post.:o
Old 01-08-2007, 08:08 PM
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Bill Dearborn
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Originally Posted by steve40th
No excuse I know, I apologize and will reprimand myself after finishing this post.:o
Despite the waxers belief they will melt in the rain they actually do not melt.

Bill

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