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Thread: First Auto '03 Cobra passes...

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  1. #1
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    First Auto '03 Cobra passes...

    Eaton powered!!!

    anyways, got to the track, went to tech. "you have a shield on that auto?" ......yeap.....(still need to find one) teched in and immmediatly went to the lanes. racing started about 915 and my first pass was at 9:54am. the slip on the left is the first pass...no idea what I am doing...tires at 12.5psi...I hammered the gas on the 3rd yellow and let the t-brake off....shifted around 6200-6300, and almost forgot about lockup and I hit that at about the 1000' mark in 3rd. the slip on the right is the same scenerio...I didnt change anything except i hit the lockup IMMEDIATELY after i shifted into 3rd. I am car 213

    Jake
    Silver '03 Cobra Coupe Auto
    9.82 @ 135 w/ a 1.35 - NO Nitrous!

    9.50 @ 139 w/ a 1.30 - Nitrous

    **Click here for all my video's!!!**


  2. #2
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    the track then took lunch break and I chenged a few things. I dropped the tires to 12psi as I could tell the car was spinning a bit out of the hole. I talked to a couple people with auto's and was told to not floor the car, but to hold the rpm a little lower than the stall speed. my converter is a 4k stall so we decided to hold it right around 3500rpm (thanks Tim and Eric), then at the same time, release the t-brake and hammer it to "flash" the converter. The last change I made was to lock up the converter at the top of 2nd gear. reason being is when i would hit 3rd and lock it up, the rpms went WAY down. not exatcly sure where but it was in the low 4k's. I have read that shifting the car while locked is a bit more stressful on the tranny but hey...its a race tranny that I'm going to ship back every couple years anyways right?? so here is the low down...
    hold the car at 3500.....release the t-brake and floor it...hit lockup at the top of 2nd....
    the slip on the left is this run. form the 60's and from being in the car. I think it was hitting harder and spinning the tires even more...

    Jake
    Silver '03 Cobra Coupe Auto
    9.82 @ 135 w/ a 1.35 - NO Nitrous!

    9.50 @ 139 w/ a 1.30 - Nitrous

    **Click here for all my video's!!!**


  3. #3
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    now the slip on the right....haha....i decided after the 10.96 pass it was time to try the n2o hit. loaded up the tune, warmed the bottle and set it all up. as I'm sure you can see...the n2o didnt com eout (for some reason) but i went 10.99 and 125 on my n2o tune with no juice!!!!
    so that was the first day out with the auto Eaton car...I'm happy with the outcome as I know there is more in it. I dont see why this car cant go high 1.4x 60's and run 10.7x. I was told a few of the CMDR guys racing said with the humidity that day, they were around 2 tenths off their good air times.....so we will see what happens.
    any help would be GREATLY appreciated!!! Please check out this vid that Horsepoweraddict sent me of the 10.96 pass. watch the launch...its DEFF not right....

    HorsePwrAddict - Photobucket - Video and Image Hosting
    Jake
    Silver '03 Cobra Coupe Auto
    9.82 @ 135 w/ a 1.35 - NO Nitrous!

    9.50 @ 139 w/ a 1.30 - Nitrous

    **Click here for all my video's!!!**


  4. #4
    Administrator BurnTire's Avatar
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    Those are some nice times.
    Sold
    2004 Cobra, Whipple ,TH-400
    Burning Corn
    9.97 - 135.5

  5. #5
    Senior Member 5.0Stanger's Avatar
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    Nice times. I watched the vid a few times. Did you notice how the rear of the car got up on the tires, then dropped? Are you using a solid rear axle? If so, what are you doing to help weight transfer to the rearend? Do you have drag springs and adjustable shocks? Sorry, I'm not familiar with your car, but I usually soften up the rear shocks on the L that I race. That usually gets a little weight transfer. That's because of the stock rear springs. But, it'd be different with drag springs.
    '03 Cobra - Mildly modded. A work in progress. 12.566 @ 110.755, 1.89 60' on street tires
    '93 Notch - Looks faster than it is.
    '72 F100 4x4 - Dormant, for now.
    Race '99 L - 12.40 @ 110


  6. #6
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    Quote Originally Posted by 5.0Stanger View Post
    Nice times. I watched the vid a few times. Did you notice how the rear of the car got up on the tires, then dropped? Are you using a solid rear axle? If so, what are you doing to help weight transfer to the rearend? Do you have drag springs and adjustable shocks? Sorry, I'm not familiar with your car, but I usually soften up the rear shocks on the L that I race. That usually gets a little weight transfer. That's because of the stock rear springs. But, it'd be different with drag springs.
    yes I did. I havent touched the suspension since the car was at the track last which resulted in my 10.98 @ 124.98 with a 1.54. the auto actually launches differently even on the trans brake. I do have a solid rear. suspension consists of Pro3i control arms, FMS B springs and an air bag in each spring, and Tokico 5 way shocks...nothing crazy. Im gonna mess with a littl emore but I think I need to change it up a bit..(coil overs and an anti-roll bar) any suggestions for the current setup?
    Jake
    Silver '03 Cobra Coupe Auto
    9.82 @ 135 w/ a 1.35 - NO Nitrous!

    9.50 @ 139 w/ a 1.30 - Nitrous

    **Click here for all my video's!!!**


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