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

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Old 08-18-2013, 11:54 PM   #1
Turbo99

 
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M6 RPM lauch w/ 17" Bogarts & 28x10 Hoosier slicks?

What are you M6 guys launching at (RPM) with 17" wheels and Hoosier 28x10 slick. I am running this week for the first time with slicks and was just looking for a first launch RPM. I normally leave at 2700 with my DR but it spins and my past best 60' is a 1.82. I have 3.91 gears as well.
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Old 08-19-2013, 05:25 AM   #2
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What are you M6 guys launching at (RPM) with 17" wheels and Hoosier 28x10 slick. I am running this week for the first time with slicks and was just looking for a first launch RPM. I normally leave at 2700 with my DR but it spins and my past best 60' is a 1.82. I have 3.91 gears as well.
Dump the clutch at 5500 and let me know how it goes!
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Old 08-19-2013, 07:54 AM   #3
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Start off slow and work progressively. That's what I would do. Lear what my car likes
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Old 08-19-2013, 08:55 AM   #4
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Dump the clutch at 5500 and let me know how it goes!
LOL I'll get right on that!!
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Old 08-19-2013, 08:55 AM   #5
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Dump the clutch at 5500 and let me know how it goes!
Only live once right??
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Old 08-19-2013, 08:57 AM   #6
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I undaerstand start slowly and work up, but it will be busy and prolly only get 3 passes so was looking for EXPERIENCE statements on what works to give me a ball park starting point. I have raced plenty and moreless just making conversation and if it turns out I find something out then great.
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08' F250 CCSB 6.4L Diesel White & Black, Blacked out, 580RWHP @ 55psi 13.21 @ 101mph
10' Camaro 2SS LS3 M6 White & Black, Blacked out, 684 RWHP & 633 FT.LBS @ 10psi 10.82@130mph
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Old 08-19-2013, 11:20 AM   #7
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Twin disc clutches like higher rpm starts, try like 3500 and work up from there. Just ride the clutch out past the 60'.
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Old 08-19-2013, 01:00 PM   #8
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Twin disc clutches like higher rpm starts, try like 3500 and work up from there. Just ride the clutch out past the 60'.
Yeah 3500 was what I was thinking to start at.
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08' F250 CCSB 6.4L Diesel White & Black, Blacked out, 580RWHP @ 55psi 13.21 @ 101mph
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TVS2300 ,Hendrix Street Slayer Twin Carbon Clutch, Dana 60 3.73, DSS 1400HP Axles,JRe cam & LaMotta Performance tuned,LPE Fuel, AI Super Chiller,MT ET Streets
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Old 08-22-2013, 05:28 PM   #9
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I launch Pumpkin at 4800 on my Bogarts slicks and skinnies and get 1.6+ sixty foots. But I have now wounded two diff's. The second one had JRE caps and posi mod LPW cover and 3:91's. The spiders are the weak point. Time for the 12 bolt.

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Old 08-22-2013, 05:30 PM   #10
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Dump the clutch at 5500 and let me know how it goes!
When I dumped at 5500 I just spun the slicks.

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Old 08-22-2013, 05:37 PM   #11
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I have an Eaton tru-trak so that weak point is better, gonna go 3500 then move up.
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08' F250 CCSB 6.4L Diesel White & Black, Blacked out, 580RWHP @ 55psi 13.21 @ 101mph
10' Camaro 2SS LS3 M6 White & Black, Blacked out, 684 RWHP & 633 FT.LBS @ 10psi 10.82@130mph
TVS2300 ,Hendrix Street Slayer Twin Carbon Clutch, Dana 60 3.73, DSS 1400HP Axles,JRe cam & LaMotta Performance tuned,LPE Fuel, AI Super Chiller,MT ET Streets
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Old 08-22-2013, 05:44 PM   #12
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My car is heavy I have a stereo system,cage,blower and I scaled the car yesterday and 4190 without me and I weigh 220. so basically 4400lbs
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08' F250 CCSB 6.4L Diesel White & Black, Blacked out, 580RWHP @ 55psi 13.21 @ 101mph
10' Camaro 2SS LS3 M6 White & Black, Blacked out, 684 RWHP & 633 FT.LBS @ 10psi 10.82@130mph
TVS2300 ,Hendrix Street Slayer Twin Carbon Clutch, Dana 60 3.73, DSS 1400HP Axles,JRe cam & LaMotta Performance tuned,LPE Fuel, AI Super Chiller,MT ET Streets
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Old 08-22-2013, 06:03 PM   #13
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Quote:
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My car is heavy I have a stereo system,cage,blower and I scaled the car yesterday and 4190 without me and I weigh 220. so basically 4400lbs
Same weight here... I left the line in Indy last year at 5500 like Super mentioned, not because he suggested it, and dead hooked, but I'm running 3.07's... Not made for drag racing...

Lid start at 3500 to 4000 and slip the clutch out to at least the 60 and adjust from there...
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Old 08-23-2013, 04:17 PM   #14
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Rained out tonight maybe Tuesday night.
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08' F250 CCSB 6.4L Diesel White & Black, Blacked out, 580RWHP @ 55psi 13.21 @ 101mph
10' Camaro 2SS LS3 M6 White & Black, Blacked out, 684 RWHP & 633 FT.LBS @ 10psi 10.82@130mph
TVS2300 ,Hendrix Street Slayer Twin Carbon Clutch, Dana 60 3.73, DSS 1400HP Axles,JRe cam & LaMotta Performance tuned,LPE Fuel, AI Super Chiller,MT ET Streets
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Old 08-23-2013, 04:26 PM   #15
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maxdmax on here is a local guy to me. he runs the same tire and m6 car aswell. i think i heard him say 5000-5500. but he got a street slayer triple disk and i would say he slips it just a lil. but he may not i dont know.
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Old 08-23-2013, 04:38 PM   #16
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Although i dont have slicks... just 18inch DR's....

I launched my car anywhere between 5000-5500 as stated above.

The twin disks do love the heat so you still can slip the clutch, but just be more aggresive with the slip. I pulled low 1.7x's consistantly with mine and my best was a 1.69.
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Old 08-23-2013, 06:24 PM   #17
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if a clutch can take it rev that mf'er and let it eat . slip the clutch as needed and hold on lol. wish my car could take a launch like that.
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Old 08-23-2013, 08:25 PM   #18
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U guys scare me that much rpm? I got ZR-1 clutch.
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Old 08-27-2013, 11:10 PM   #19
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Well....didn't get into the 10's but closer, it was 85* and I ran 11.13 @ 125.5. Car with me in it weighs 4410 lbs.. I did get a 1.58 60ft time. Tires were at 14.5 psi and I was leaving anywhere from 3700-4000, spun some in 1st as I hit 2nd just a touch of chatter I hit the rev limiter in 2nd on one 11.1 run and the other I got out of it just a touch on the big end because I got out of the grove and the car was really squirley but got right back in it.

The tires did move on the rim about an inch after 5 passes. I am not ready to put screws in them just yet. But I think with some track prep which sucked tonight and leaving on a 2 step at 4200 it will get a 1.4 60ft and prolly spin on the wheels.
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08' F250 CCSB 6.4L Diesel White & Black, Blacked out, 580RWHP @ 55psi 13.21 @ 101mph
10' Camaro 2SS LS3 M6 White & Black, Blacked out, 684 RWHP & 633 FT.LBS @ 10psi 10.82@130mph
TVS2300 ,Hendrix Street Slayer Twin Carbon Clutch, Dana 60 3.73, DSS 1400HP Axles,JRe cam & LaMotta Performance tuned,LPE Fuel, AI Super Chiller,MT ET Streets
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Old 08-28-2013, 09:46 AM   #20
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Not bad at all. So close! With some cooler air, you got it in the bag. Now you are making me want to get slicks.
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