Launching a Manual
Launching a Manual Hey guys,
I have been struggling with my car for about 2 years now getting it to launch right. I now have every suspension modification and the best possible setup to get traction, and boy does it get traction. Last night I launched the car at 5,500 rpm and just kinda dumped the clutch, the car did the best 60' its ever done at 1.64 but went slower overall. (Video: )
My thinking is that a clutch dump is way to aggressive out of the hole and the engine (460hp/440tq) can't keep up. So do you M6 guys have any tips or tricks to help me drive the car out of the hole?
Thanks,
I have been struggling with my car for about 2 years now getting it to launch right. I now have every suspension modification and the best possible setup to get traction, and boy does it get traction. Last night I launched the car at 5,500 rpm and just kinda dumped the clutch, the car did the best 60' its ever done at 1.64 but went slower overall. (Video:
My thinking is that a clutch dump is way to aggressive out of the hole and the engine (460hp/440tq) can't keep up. So do you M6 guys have any tips or tricks to help me drive the car out of the hole?
Thanks,
Sadly, I only got 3 runs in last night and didnt get a chance to try it. It's a pretty stiff clutch so I think its gonna be hard to drag the clutch, I guess it will just take lots of practice?
I have some experience in this! Doesn't launch to bad but seems to bog. So needs some more rpm or more air pressure. I like running 28 inch tires on manual also.
2 step also helps keep you consistent and work out the bugs on suspension and such. I launched at 6k+ and release the clutch quick/dump. Not really slipping but not a side step dump. Best 1.4x 60ft with 427 rwhp cam only deal. Some other tricks and practice is needed.
2 step also helps keep you consistent and work out the bugs on suspension and such. I launched at 6k+ and release the clutch quick/dump. Not really slipping but not a side step dump. Best 1.4x 60ft with 427 rwhp cam only deal. Some other tricks and practice is needed.
I have some experience in this! Doesn't launch to bad but seems to bog. So needs some more rpm or more air pressure. I like running 28 inch tires on manual also.
2 step also helps keep you consistent and work out the bugs on suspension and such. I launched at 6k+ and release the clutch quick/dump. Not really slipping but not a side step dump. Best 1.4x 60ft with 427 rwhp cam only deal. Some other tricks and practice is needed.
2 step also helps keep you consistent and work out the bugs on suspension and such. I launched at 6k+ and release the clutch quick/dump. Not really slipping but not a side step dump. Best 1.4x 60ft with 427 rwhp cam only deal. Some other tricks and practice is needed.
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What rearend gear is it? when I was t56 car I'd launch at 6,200rpm. 28x10.5 slick at 13psi. 4.10 gear. 1.42 60fts. car made 620hp. over the course of 2 years I broke 3 main shafts in the trans. 10.21@134 was best i could get. never got it to 1.3x 60ft and get in the 9's.
TECH Fanatic
Joined: Sep 2007
Posts: 1,244
Likes: 7
From: hattiesburg, Ms
What rearend gear is it? when I was t56 car I'd launch at 6,200rpm. 28x10.5 slick at 13psi. 4.10 gear. 1.42 60fts. car made 620hp. over the course of 2 years I broke 3 main shafts in the trans. 10.21@134 was best i could get. never got it to 1.3x 60ft and get in the 9's.
TECH Fanatic
Joined: Sep 2007
Posts: 1,244
Likes: 7
From: hattiesburg, Ms
Hey guys,
I have been struggling with my car for about 2 years now getting it to launch right. I now have every suspension modification and the best possible setup to get traction, and boy does it get traction. Last night I launched the car at 5,500 rpm and just kinda dumped the clutch, the car did the best 60' its ever done at 1.64 but went slower overall. (Video: https://youtu.be/AM7c4WxUhhE)
My thinking is that a clutch dump is way to aggressive out of the hole and the engine (460hp/440tq) can't keep up. So do you M6 guys have any tips or tricks to help me drive the car out of the hole?
Thanks,
I have been struggling with my car for about 2 years now getting it to launch right. I now have every suspension modification and the best possible setup to get traction, and boy does it get traction. Last night I launched the car at 5,500 rpm and just kinda dumped the clutch, the car did the best 60' its ever done at 1.64 but went slower overall. (Video: https://youtu.be/AM7c4WxUhhE)
My thinking is that a clutch dump is way to aggressive out of the hole and the engine (460hp/440tq) can't keep up. So do you M6 guys have any tips or tricks to help me drive the car out of the hole?
Thanks,
Having a way to log rpm, tps, mph and other stuff will help you see what the car is actually doing. I use hp tuners to do this but there is other stuff you can do this with. If you don't have a shift light then that would be helpful for et cause stock tach sucks.
What rearend gear is it? when I was t56 car I'd launch at 6,200rpm. 28x10.5 slick at 13psi. 4.10 gear. 1.42 60fts. car made 620hp. over the course of 2 years I broke 3 main shafts in the trans. 10.21@134 was best i could get. never got it to 1.3x 60ft and get in the 9's.
Need a two step so you can be wot on the launch. That should help some. I would launch the car at as high of rpm as I could unless it just blows the tires off. The gearing and tire size needs to be where your almost running out of gear at the stripe in 4th. No doubt your car is bogging down to 3500 or worse from the video you've shown. 2.66 first gear makes a car bog hard without alot of power. The best setups have an adjustable clutch or a clutch slipper device like I have.
Having a way to log rpm, tps, mph and other stuff will help you see what the car is actually doing. I use hp tuners to do this but there is other stuff you can do this with. If you don't have a shift light then that would be helpful for et cause stock tach sucks.
Having a way to log rpm, tps, mph and other stuff will help you see what the car is actually doing. I use hp tuners to do this but there is other stuff you can do this with. If you don't have a shift light then that would be helpful for et cause stock tach sucks.
Im going to the track again maybe tuesday and definitely friday. Probably going to try and launch a little higher and maybe drive the car out of the hole
With it dead hooking like that on those radials, your slip yoke won't last long. I would actually already bet it's twisted some. You need some bias plys. If you don't plan on making anymore power for a little while, I would run some stiffwall 26" slicks. You need all the help you can get. Your cars down on power a good bit it seems.
TECH Fanatic
Joined: Sep 2007
Posts: 1,244
Likes: 7
From: hattiesburg, Ms
Get the lingenfelter true two step if you want a secondary rev limiter like I use it for. If not just get the msd. The lingenfelter needs to be wired different from the msd if you plan to wire it on the clutch pedal sensor. The msd has to go below a certain rpm range to reingage so it's fine. The lingenfelter comes on regardless and will take power out of the car in shifts. My car lost et like that when I had it set below my shift points. I used a relay and wired it through the brake switch and clutch pedal sensor.
I'm not sure what the cheapest way to log runs is. I'm kinda curious to what's out there to use.
I'm not sure what the cheapest way to log runs is. I'm kinda curious to what's out there to use.