[FSTASNTZ]

1. 13.065 @ 108.87
2. 13.814 @ 107.95
3. 13.091 @ 108.60

 

[G8 GT V8]

1 & 3 are very nice times

 

[slivoman]

Were those just stock runs?

 

[pigman440]

how was traction on street tires? Consistent 1 & 3.

 

[FSTASNTZ]

Still at the track. Car had 1040 miles when I arrived. Has the Livernois tune. 93 octane. Inconsistent head wind and temps have gone from 58 to near 70.

 

[Pinetree]

1. 13.065 @ 108.87
2. 13.814 @ 107.95
3. 13.091 @ 108.60

Predicted DA

 

[FSTASNTZ]

Got too hot, car was having an issue getting traction, packed it up around 2:30p and headed out. Today's results and approximate times of the runs:
Time - 60 ft - 1/8 time - 1/8 MPH - 1/4 time - 1/4 MPH
1. 11:30a 2.103 8.545 @ 86.26 13.065 @ 108.87
2. 11:45a 2.404 9.244 @ 84.60 13.814 @ 107.95
3. 12:11p 2.121 8.561 @ 87.83 13.091 @ 108.60
4. 12:51p 2.194 X.XX @ XX.XX 13.198 @ 108.06
5. 1:06p 2.110 8.560 @ 86.17 13.088 @ 108.57
6. 1:21p 2.120 8.588 @ 87.66 13.119 @ 108.50
7. 1:27p 2.347 9.178 @ 84.53 13.741 @ 108.24
8. 1:31p 2.777 10.278 @ 82.60 14.90 @ 108.66
9. 2:16p 2.258 8.822 @ 86.81 13.390 @ 107.52
10. 2:19p 2.464 9.115 @ 86.31 13.687 @ 107.87

I have never corrected times from the strip, anyone able to correct these times for the elevation and air quality at the time?

I did play with rear tire pressure, TCS on and TCS off, flash stall and non-flash stall. That combined with my lack of skills and the times vary greatly.

 

[Pinetree]

Got too hot, car was having an issue getting traction, packed it up around 2:30p and headed out. Today's results and approximate times of the runs:
Time - 60 ft - 1/8 time - 1/8 MPH - 1/4 time - 1/4 MPH
1. 11:30a 2.103 8.545 @ 86.26 13.065 @ 108.87
2. 11:45a 2.404 9.244 @ 84.60 13.814 @ 107.95
3. 12:11p 2.121 8.561 @ 87.83 13.091 @ 108.60
4. 12:51p 2.194 X.XX @ XX.XX 13.198 @ 108.06
5. 1:06p 2.110 8.560 @ 86.17 13.088 @ 108.57
6. 1:21p 2.120 8.588 @ 87.66 13.119 @ 108.50
7. 1:27p 2.347 9.178 @ 84.53 13.741 @ 108.24
8. 1:31p 2.777 10.278 @ 82.60 14.90 @ 108.66
9. 2:16p 2.258 8.822 @ 86.81 13.390 @ 107.52
10. 2:19p 2.464 9.115 @ 86.31 13.687 @ 107.87

I have never corrected times from the strip, anyone able to correct these times for the elevation and air quality at the time?

I did play with rear tire pressure, TCS on and TCS off, flash stall and non-flash stall. That combined with my lack of skills and the times vary greatly.

Looks like you are learning what the SS wants & like on the local track to me. It does take time and laps to dial in a new ride. Impressive!

 

[G8 GT V8]

Actual pass: 1. 11:30a 2.103 8.545 @ 86.26 13.065 @ 108.87

DA was around 393;
Corrected: for stock and Mildly Modified Naturally Aspirated Engines (dragtimes.com)
13.037 @ 109.044 MPH

 

[FSTASNTZ]

Actual altitude looks to be 420-426.5ft.
Corrected the best times using 426.5ft:
Time - 60 ft - 1/8 time - 1/8 MPH - 1/4 time - 1/4 MPH
1. 11:30a 2.103 8.545 @ 86.26 13.065 @ 108.87 -- Corrected: 12.992 @ 109.45
2. 11:45a 2.404 9.244 @ 84.60 13.814 @ 107.95
3. 12:11p 2.121 8.561 @ 87.83 13.091 @ 108.60 -- Corrected: 13.018 @ 109.178
4. 12:51p 2.194 X.XX @ XX.XX 13.198 @ 108.06
5. 1:06p 2.110 8.560 @ 86.17 13.088 @ 108.57 -- Corrected: 12.954 @ 109.695
6. 1:21p 2.120 8.588 @ 87.66 13.119 @ 108.50 -- Corrected: 12.985 @ 109.625
7. 1:27p 2.347 9.178 @ 84.53 13.741 @ 108.24
8. 1:31p 2.777 10.278 @ 82.60 14.90 @ 108.66
9. 2:16p 2.258 8.822 @ 86.81 13.390 @ 107.52
10. 2:19p 2.464 9.115 @ 86.31 13.687 @ 107.87

 

[G8 GT V8]

Your DA changed throughout the day. It started out really low in the morning then climbed all day, so using 426 for all of your runs doesn't really do all of your runs justice. Looks like actual track elevation is 211 according to dragtimes, but humidity, pressure, and temperature all play a part in your DA.

Here's what I used:

DA Calculator - Density Altitude Calculator - DragTimes.com

I used the DA calculated at 11:56 AM for the specific corrected run that I posted.

 

[FSTASNTZ]

Your DA changed throughout the day. It started out really low in the morning then climbed all day, so using 426 for all of your runs doesn't really do all of your runs justice. Looks like actual track elevation is 211 according to dragtimes, but humidity, pressure, and temperature all play a part in your DA.

Here's what I used:

DA Calculator - Density Altitude Calculator - DragTimes.com

Drag times lists two different elevations for the track in two different areas of the site. I used the 426 as it is closest to what I what I understood the track to stand at over my last 17 years of running there (actually thought it was 413), the 211 I could only find referenced on drag times.
It is my understanding that the elevation is constant, so using 426 for each run should not favor any one run over the other. The variable is the atmospheric conditions.
Too bad they do not have something to factor in the head or cross wind at the time of the run.

 

[SS4ALL]

(actually thought it was 413), the 211 I could only find referenced on drag times.
It is my understanding that the elevation is constant, so using 426 for each run should not favor any one run over the other. The variable is the atmospheric conditions.

Just a thought... if elevation is in question you can use Google Earth and find your track site and check elevation there.

Anyhow 400 vs 425 won't make much of a difference but just in case.

 

[Drew888]

LOL... 400 or zero elevation, it's close enough. Is what it is, 108-109mph which is a good time for 3900# rear drive sedan.

What will make a bigger difference is that 60ft time (that and drag radials).

 

[pigman440]

if you drop the 60' times to 1.9s you will see a vast improvement in times.

 

[FSTASNTZ]

Yup, I am well aware of what impact another .1 or .2 will have on the 60 foot times. Was trying to get a 1.9, but could not pull it off.
Will try using the paddle shifters next time and see if short shifting out of 1st will control wheel spin and increase 60 foot times.

 

[G8 GT V8]

Drag times lists two different elevations for the track in two different areas of the site. I used the 426 as it is closest to what I what I understood the track to stand at over my last 17 years of running there (actually thought it was 413), the 211 I could only find referenced on drag times.
It is my understanding that the elevation is constant, so using 426 for each run should not favor any one run over the other. The variable is the atmospheric conditions.
Too bad they do not have something to factor in the head or cross wind at the time of the run.

You're correct that elevation is constant. If you click on the time stamp in the link I posted, it shows the calculated DA for that specific time based on temp, humidity, barometric pressure, and elevation. My point was that earlier in the morning, the weather conditions generated a lower DA, but as the day continued, weather conditions changed which increased the DA. Even though DA got worse your times continued to look good.

 

[Barbarossa]

Corrections don't mean squat. Dial what it runs.

 

[G8 GT V8]

Corrections don't mean squat. Dial what it runs.

Corrections can be helpful when looking at personal ET improvements. If you baseline your car in the spring, do mods/tuning, and can't get back to the track until the summer and find that you didn't drop much, if any, ET, comparing the corrected values will help you determine if you've actually made any improvement. Not a perfect science but helps.

 

[Barbarossa]

I'd agree with that, as far as practice rounds go.