1/4 Mile Help?
Thread Starter
Instructor
Joined: Jul 2013
Posts: 215
Likes: 18
1/4 Mile Help?
I finally finished my build and I'm going to a track rental on Sunday. I've never had the C5 at the track, so I was looking for a little advice.
6 speed, blower, cam, forged internals.
Do I run it with traction control off or in Competition Driving mode?
Thanks!
6 speed, blower, cam, forged internals.
Do I run it with traction control off or in Competition Driving mode?
Thanks!
Drifting
Joined: Jul 2004
Posts: 1,675
Likes: 689
From: Pingree Grove IL
You didn’t mention sticky tires. Leave traction control on if you have street tires. A summer only tire is not a sticky tire either, I’m talking drag radials. With the kind of power I think you have, your tires might be spinning going into 3rd gear, especially if it’s 50 degrees outside.
Safety Car
Joined: Dec 2009
Posts: 4,993
Likes: 720
From: Alberta
2022 C2 of the Year Finalist - Modified
C2 of the Year Finalist - Modified 2020
First passes - traction control on, especially in cooler ambient and track surface temperatures. As above, need to know what tires you will be running and any previous racing experience.
At any rate, start with nannies on, and only make single changes from pass to pass. The goal is steady improvement, no one runs their best times on their first track day. Examples of changes: Tire pressure, traction control settings, launch RPM, etc.
What blower are you running - centri/pd/twin screw?
At any rate, start with nannies on, and only make single changes from pass to pass. The goal is steady improvement, no one runs their best times on their first track day. Examples of changes: Tire pressure, traction control settings, launch RPM, etc.
What blower are you running - centri/pd/twin screw?
Thread Starter
Instructor
Joined: Jul 2013
Posts: 215
Likes: 18
You didn’t mention sticky tires. Leave traction control on if you have street tires. A summer only tire is not a sticky tire either, I’m talking drag radials. With the kind of power I think you have, your tires might be spinning going into 3rd gear, especially if it’s 50 degrees outside.
Thread Starter
Instructor
Joined: Jul 2013
Posts: 215
Likes: 18
First passes - traction control on, especially in cooler ambient and track surface temperatures. As above, need to know what tires you will be running and any previous racing experience.
At any rate, start with nannies on, and only make single changes from pass to pass. The goal is steady improvement, no one runs their best times on their first track day. Examples of changes: Tire pressure, traction control settings, launch RPM, etc.
What blower are you running - centri/pd/twin screw?
At any rate, start with nannies on, and only make single changes from pass to pass. The goal is steady improvement, no one runs their best times on their first track day. Examples of changes: Tire pressure, traction control settings, launch RPM, etc.
What blower are you running - centri/pd/twin screw?
Its gonna be a cold day on sunday! Im not looking for the best the car can do, i just got it back, not ready to break it again just yet
So is competition driving usefull at all?
Safety Car
Joined: Dec 2009
Posts: 4,993
Likes: 720
From: Alberta
2022 C2 of the Year Finalist - Modified
C2 of the Year Finalist - Modified 2020
Im running a centrifugal blower. I've ran plenty of times, but with this car and never at this power level. I have M/T ET streets.
Its gonna be a cold day on sunday! Im not looking for the best the car can do, i just got it back, not ready to break it again just yet
So is competition driving usefull at all?
Its gonna be a cold day on sunday! Im not looking for the best the car can do, i just got it back, not ready to break it again just yet
So is competition driving usefull at all?
Thread Starter
Instructor
Joined: Jul 2013
Posts: 215
Likes: 18
Knowing your tires and that you have some experience, I would say traction control off with the ET Streets. Cold track temps will hurt, make sure your burnout puts some good heat into the tire and sidewall. Centri I assume is a procharger, which should help you keep from blowing the tires off. Might need to short shift 1st, and try not to shock the diff with a clutch drop, progressive leg movement is much better. What is your clutch setup?
Le Mans Master
Joined: Sep 2017
Posts: 5,222
Likes: 1,529
From: Pasadena, MD
2023 C5 of the Year Finalist - Modified
I'm interested in seeing how you do. I have a similar setup. I would start in Comp Driving Mode. Heat the tires good. Slip the clutch. Good luck and be sure to report back.
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Thread Starter
Instructor
Joined: Jul 2013
Posts: 215
Likes: 18
Drifting
Joined: Jul 2004
Posts: 1,675
Likes: 689
From: Pingree Grove IL
Good luck, report back with drag times please.
Thread Starter
Instructor
Joined: Jul 2013
Posts: 215
Likes: 18
Race Director
Joined: Oct 2004
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Likes: 4,667
Le Mans Master
Joined: Sep 2017
Posts: 5,222
Likes: 1,529
From: Pasadena, MD
2023 C5 of the Year Finalist - Modified
Drifting
Joined: Jul 2004
Posts: 1,675
Likes: 689
From: Pingree Grove IL
Good advice. I will only add that IF the OP must let off with the rear starting to go sideways, he should try to let off somewhat slowly. If you kill the throttle, and hit the brakes with the car partially sideways, when the tires suddenly stop spinning you run the risk of having the car go into a wobble, left to right, right to left.... If going 70mph in 2nd gear, I guarantee afterwards you will need an underwear change! Don't ask.....
Le Mans Master
Joined: Sep 2017
Posts: 5,222
Likes: 1,529
From: Pasadena, MD
2023 C5 of the Year Finalist - Modified
Race Director
Joined: Oct 2004
Posts: 12,864
Likes: 4,667
if the car starts going sideways, your not supposed to touch the brakes, let off, control the car and ride through it. Multiple AutoX runs is great practice for this, low speed and very violent driving. Although I’m not running anywhere near your guy’s power level. Mine doesn’t go sideways at 70. Learned early on, make sure the steering wheel is straight before your right foot goes through the floor, back end kicks out hard and fast.