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Dragstrip and Launch Techniques Discussion 1/4 mile, 1/8 mile, launch discussions.

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Old 07-07-2014, 07:52 PM   #1
JT20
 
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2013 M6 SS launch

I Have a cammed 2013 M6 camaro ss with a RXT Twin Clutch and 20" mickey thompson drag radials... Last yr when i was just bolt on and stock clutch i tried dumping the clutch at and rpm it would fall on it face after mayb 5 feet or so now that im cammed i thought i could dump it but its still bogs at 4k rpm... are we not able to dump? or what do i have to do to b able to dump it or am i stuck with riding it out?
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Old 07-07-2014, 11:22 PM   #2
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Most M6 guys (or any manual) that dump or rev higher than 3k rpm at the line have more difficulty without a lot of spinning.

Before I had any actual drag experience I noticed a lot of manual cars started off the line slower but once past 30-60 ft were able to fly.

My own experience (at least so far) is I get smoother launches out of my M6 (I am N/A with the stock clutch but no cam) when I hit the tree around 2K rpm.
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Old 07-08-2014, 09:54 AM   #3
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Quote:
Originally Posted by alaskacamaro View Post
Most M6 guys (or any manual) that dump or rev higher than 3k rpm at the line have more difficulty without a lot of spinning.

Before I had any actual drag experience I noticed a lot of manual cars started off the line slower but once past 30-60 ft were able to fly.

My own experience (at least so far) is I get smoother launches out of my M6 (I am N/A with the stock clutch but no cam) when I hit the tree around 2K rpm.
+1

2000 - 2500 launches here. No dumping of the clutch. Ride it out through about 4000 - 4500 before Im completely off of it.
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Old 07-08-2014, 10:41 AM   #4
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Way to easy to spin with an M6. 2500 is about where I'm launching also. Any more and I spin my way to a 2.xx 60'. Launching around 2500, I've cut 1.72's on the stock pzeros. I've had no luck with NT05R's because I don't have a line lock yet.
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Old 07-08-2014, 11:37 AM   #5
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Way to easy to spin with an M6. 2500 is about where I'm launching also. Any more and I spin my way to a 2.xx 60'. Launching around 2500, I've cut 1.72's on the stock pzeros. I've had no luck with NT05R's because I don't have a line lock yet.
Now how do you do 1.72's? I have a 2010 ss m6 with 315's nitto invo and the best I've done is 2.2. Any tricks up ur sleeves u might want to share?
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Old 07-08-2014, 11:42 AM   #6
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First, ditch the Invo's. lol. They are way worse than the pzeros. I hated those things. They are too slick to get good grip.

Keep your RPMs around 2500, start to leave before you mash the gas and keep the clutch coming out smoothly. If you feel spin ease up on the gas and keep slipping the clutch.

I also have 3.91's and a Trutrac but was getting 1.9's and the rare 1.88 (once) before the swap.


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Old 07-08-2014, 12:44 PM   #7
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Really I feel the invos stick better than the pirellis. Good pointers though I'll try it this weekend
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Old 07-08-2014, 01:29 PM   #8
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1.72 on stock tires??? how??? I've only been able to get low 1.8's on DR's
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Old 07-08-2014, 01:57 PM   #9
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Really I feel the invos stick better than the pirellis. Good pointers though I'll try it this weekend
They are much better for track work than stock but are a terrible choice for a drag strip. Invos are my current DD tire but I'll be switching to pilot super sports next season.

Practice with your Invos but you should eventually buy a good set of DR for the occasional track day.
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Old 07-08-2014, 02:20 PM   #10
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Its my dd so I'll just have to hold off on other tires. I'm much more interested in how it performs on the street. I'll still take it to the track this weekend any other pointers guys
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Old 07-08-2014, 09:09 PM   #11
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How are all of youll spinning and im bogging?????? what are you doing that im not?
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Old 07-09-2014, 07:14 AM   #12
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most are riding out clutch, also hard dumping will put a lot of strain on the slave cylinder..nothing worse then blowing it out and having to get towed home...after blowing out 2 , I went auto....not worth the down time and expense...especially if you are 500 miles from home..imo
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Old 07-09-2014, 12:35 PM   #13
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1.72 on stock tires??? how??? I've only been able to get low 1.8's on DR's
Track was well prep'd and the car took off like a rocket. By best on DR's has been 2.01 on an unprep'd track.

I've had my best luck lauching at lower rpms where some like leaving at 4k-4500, my car seems to like lower rpms.
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Old 07-09-2014, 05:51 PM   #14
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Track was well prep'd and the car took off like a rocket. By best on DR's has been 2.01 on an unprep'd track.

I've had my best luck lauching at lower rpms where some like leaving at 4k-4500, my car seems to like lower rpms.
Im launching at 2500 as well. My goal without any more mods is 1.7s. That should put me in high 12.2 or low 12.3 I imagine with cooler temps out. Good job on doing that with an M6 om stock tires!
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Old 07-09-2014, 05:58 PM   #15
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Im launching at 2500 as well. My goal without any more mods is 1.7s. That should put me in high 12.2 or low 12.3 I imagine with cooler temps out. Good job on doing that with an M6 om stock tires!

Thanks! I should be in the high 10's low 11's and just can't get there with the high temps and bad prep. Best so far is 11.701. Hitting 125.75 last weekend was encouraging, but never ran faster than 12.03.

I'm waiting for everything to finally come together.


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Old 07-09-2014, 08:27 PM   #16
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1.72 on stock tires??? how??? I've only been able to get low 1.8's on DR's
Give me a call and I will give you a few tips...I cut 1.7x sixty s with my 295 25 22s@ 50 lbs of air pressure. You must have a proper alignment to 60 with IRS...call anytime
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Old 07-09-2014, 10:36 PM   #17
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I have had some luck at about 4800-5000 rpm. Just roll in to the 1st light stop get the RPMs up lightly using the clutch bump your way up to the 2nt light. The key is using the stored energy in the motor and flywheel. Just keep your right foot right where it is for about 1 sec as you are letting the clutch out then ROLL the gas to the floor do not slam it down. Trying not to let the RPMs drop lower then 2k , if they do eather roll on the gas faster or slip the clutch a bit more. Guarantee you will cut a few 1.8x's and this way is a bit forgiving if the track is a little off or in my case I'm a little off lol.

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Old 07-12-2014, 07:36 AM   #18
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Well I hit a 12.9 @ 112 with a 2.153 60ft. What do y'all think I should run with a 1.8 60ft
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Old 07-15-2014, 03:41 PM   #19
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Give me a call and I will give you a few tips...I cut 1.7x sixty s with my 295 25 22s@ 50 lbs of air pressure. You must have a proper alignment to 60 with IRS...call anytime
Thanks for the offer! I'll likely be doing that. PM me your # if you would.

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Well I hit a 12.9 @ 112 with a 2.153 60ft. What do y'all think I should run with a 1.8 60ft
I can't imagine you would take off less than .5 if you dropped that much off your 60'. It's f'n hard to get all the stuff to work together with an M6 to get that perfect pass. Makes it fun and frustrating as hell though. lol
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Old 07-15-2014, 08:07 PM   #20
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Well I hit a 12.9 @ 112 with a 2.153 60ft. What do y'all think I should run with a 1.8 60ft
My est without knowing your mods....12.4-5s if you get everything else right
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Old 07-17-2014, 08:48 AM   #21
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I have kooks 1 7/8 Lt headers k&n intake bo whites tb ted tuned. Suspension wise 1" BMR lowered BMR sways and trailing arms with 315 invos in the back
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Old 10-18-2014, 03:36 PM   #22
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Idk if this will help or not but I get her right to about 28-2900 rpm, don't dump though, act like your gonna take off from a stop light sorta fast. Let it out quick but don't dump, keep on the gas and last time I did that it was a perfect launch.
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Old 10-18-2014, 03:37 PM   #23
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Past 3200 I just soon, below 2500 bog, its right in between with the right clutch work you can do an awesome launch, practice makes perfect. You have to catch it right as you let out
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Old 10-18-2014, 04:12 PM   #24
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Are you guys letting any air out of your stock Pirellis to get those 60 ft times? If so, how much?
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Old 10-18-2014, 05:22 PM   #25
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I launch at 4800 on a 2-step with slicks. Consistent 1.63 sixty foots.

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