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Invatation: please join me in the 1/4 mile 12 second drag racing club


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It was a hot day around 100* and traction was a problem. The heat made for thin air and the track was hot and greasy. You can here my tires fighting for grip in 4th gear in the M4 clip. I will not give my times but I was able to outrun a Shelby GT350 a M4 BMW and a Camaro SS . Lets just say I was in the 12's.

 

 

So where are the slips showing you in the 12's?

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I found this chart that will correct your time and MPH to sea level. That is if you know the DA or just the track altitude when you made your run. It is interesting to see how fast that run would have been if at sea level on a perfect day. This was the only chart I could find for turbo engines. It is not perfect for the EcoBoost but it is close enough for fun. Again, this is just for fun and the numbers are close but not exact.

 

To convert your timeslip ET and MPH to sea level.

Multiply applicable factor times your ET or MPH.

(Example: You ran a 14.4 @ 103 MPH at 5000 DA track. The correction factors are .9367 and 1.0661 for 5000'. (14.4 * .9367) = 13.50 , (103 * 1.0661) = 109.80 MPH. So the correct time slip would be 13.50 @ 109.80 MPH at sea level)

For Modified Supercharged and Turbocharged Engines

 

Altitude (in feet) Elapsed Time Factor MPH Factor

 

1200 .9967 1.0034

1300 .9961 1.0039

1400 .9955 1.0045

1500 .9950 1.0050

1600 .9944 1.0055

1700 .9938 1.0061

1800 .9932 1.0066

1900 .9927 1.0072

2000 .9921 1.0077

2100 .9915 1.0082

2200 .9909 1.0088

2300 .9904 1.0093

2400 .9898 1.0098

2500 .9892 1.0104

2600 .9886 1.0109

2700 .9881 1.0115

2800 .9875 1.0120

2900 .9869 1.0125

3000 .9863 1.0131

3100 .9858 1.0136

3200 .9852 1.0142

3300 .9846 1.0147

3400 .9840 1.0152

3500 .9835 1.0158

3600 .9829 1.0163

3700 .9823 1.0168

3800 .9817 1.0174

3900 .9812 1.0179

4000 .9806 1.0185

4100 .9800 1.0190

4200 .9794 1.0195

4300 .9789 1.0201

4400 .9783 1.0206

4500 .9777 1.0212

4600 .9771 1.0217

4700 .9766 1.0222

4800 .9760 1.0228

4900 .9754 1.0233

5000 .9748 1.0238

5100 .9743 1.0244

5200 .9737 1.0249

5300 .9731 1.0255

5400 .9725 1.0260

5500 .9720 1.0265

5600 .9714 1.0271

5700 .9708 1.0276

5800 .9702 1.0281

5900 .9697 1.0287

6000 .9691 1.0292

Edited by Xtra
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Xtra, my best 60ft on 93 was 1.82

That is fast ! The track must have been sticky to get that and you hooked up good. If you use the correction chart above your 12.7 would be even faster . Do you know the DA when you ran that record? I would be interested in seeing what you would have run at sea level.

Edited by Xtra
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That is fast ! The track must have been sticky to get that and you hooked up good. If you use the correction chart above your 12.7 would be even faster . Do you know the DA when you ran that record? I would be interested in seeing what you would have run at sea level.

 

It was -1100 or so DA for the 12.7, so not going faster if you go to 0 DA unfortunately.

 

What was your time and DA?

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I am just learning about DA and how it effects the car. Unfortunately I don't know the DA the one day I tested. All I know is the elevation of the track is 1,158.1 FT and it was 100*F and the car fought for traction.. I found that the track has a site with the DA by the hour. Looking at 93*F today and a 3,938 DA at the track. At 100*F it would be have been more than 4,000, -1100 DA thats nuts. My 60 ft was 1.942 that day. I have decided that there is no reason to race the car when it is over 90*F so it may be awhile before I run again.

Edited by Xtra
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I am just learning about DA and how it effects the car. Unfortunately I don't know the DA the one day I tested. All I know is the elevation of the track is 1,158.1 FT and it was 100*F and the car fought for traction.. I found that the track has a site with the DA by the hour. Looking at 93*F today and a 3,938 DA at the track. At 100*F it would be have been more than 4,000, -1100 DA thats nuts. My 60 ft was 1.942 that day. I have decided that there is no reason to race the car when it is over 90*F so it may be awhile before I run again.

Ah, I see now what you ran. We’ll go when you can when it’s cooler out and good luck! Hope you can dip into the 12’s soon.

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Take off was smooth but I got wheel hop on the 1-2 shift you can hear it on the video in the car. It was my first time on a drag strip in 20 years so I was rusty with the launch and the lights. The car even broke the tires on the 3-4 shift just before the finish line and you can here that on the M4 phone video. I had good top end mph for hot 4000+DA day. I have a 60duro RMM, 21 inch Pilot Sport 4S summer tires.and H&R spoings.

Edited by Xtra
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What tire pressure are you running on those ps4s you should not be getting wheel spin after take off with those.

Ive got much more power than the edge on my rs and I run those and dont get any wheel spin after launch. It could be the awd system is just better but I feel like you have something else going on if you are getting it going into 3rd.

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Take off was smooth but I got wheel hop on the 1-2 shift you can hear it on the video in the car. It was my first time on a drag strip in 20 years so I was rusty with the launch and the lights. The car even broke the tires on the 3-4 shift just before the finish line and you can here that on the M4 phone video. I had good top end mph for hot 4000+DA day. I have a 60duro RMM, 21 inch Pilot Sport 4S summer tires.and H&R spoings.

 

Xtra, I'm not one that cares all that much for 0-60'(!) or judge strip results, more interested in rolling X to Y, top end, ability to take curves. What was your top end MPH?

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