Line lock and launching

[spacecowby]

I have been to the track a couple times and made roughly 10-15 passes. My best time was last night with a 13.6. My launch and 60' are killing me. My 60' was 2.3. So I am thinking about getting line lock to help me with launching(hopefully). My main question is with line lock once I'm staged and ready to go, I engage line lock, then I'm wondering if i let of the clutch completly and hold the RPMs around 2K would that help? Is it even possible? What harm would I be doing to my car? I go to the track about once a month, so it's not like I would be doing it everyday. Below is the video of my 13.6 run. As you can see I bogged it really bad off the launch.

[flyby]

No, line lock will hold you some, but not with clutch fully released.

[Ject]

Line lock basically applies the brake to front brakes. So if you press the brake all the way down with clutch fully released... that's how it would act.

And yes, your 60ish foot looked horrible in that video, hopefully some manual guys can toss in some words of wisdom

[jamesc1123]

Yeah, you'd break the light sensor and get the red light if you tried that. I don't think they'd like the idea of you doing that even if somehow you didn't trip the sensor. But don't look to me for launch advice. Your 60' times are probably better than mine. I haven't even been to a track in a few months :(

[Silver2SSRS6spd]

Get some drag radials. I ran with mine last week and got a 1.9 60' and my best time of 13.23 in the 1/4. The drag radials still need to be warmed up in the water box or with line loc. You can also use comp mode, just be careful during your launches with releasing the clutch, the rear axles are on the weaker side. The drag radials are not good for a daily driver so I recommend that you get a second set of tires. What tire pressure were you running in the rear? I run 20 PSI in the drag radials.

[GenuineGM.com]

Drag radials are a must to get those 60ft times down. I have used the Nitto 555r and the best 60ft so far was a 1.690 with 20psi in them. I have a set of MT radials I will be tryingout next week. I would recommed getting a line lock since this will help you get a more consistant burnout. As for the actual launch of the car you will need to experiement with different rpms and techniques until you can figure out what your tire and suspension likes. You may want to contact Lingenfelter about their 2-step.

Sam

[danhr]

I would look into a two step, before a line lock, if you are looking to improve your 60' times. A line-lock will not help your 60' on a proper track (in a manual that is).

[spacecowby]

I kind of know what a two step is, but could someone explain a little better or point me in the right direction?

[danhr]

think of it as a temporary 2nd rev limiter.

You have it hooked it up to a momentary button. Hold the button down, and floor the gas pedal, and your engine will be (spark limited) to a certain RPM. That way, each pass, you are launching at the same exact RPM. If you bog, turn the RPM up, if you spin, turn the RPM down.

When you want to go, let the clutch out and let go of the button.

It especially helps out FI cars, as it helps them build boost off the line.

[Jeff@Lingenfelter]

Originally Posted by spacecowby

I kind of know what a two step is, but could someone explain a little better or point me in the right direction?

We do offer the LNC-003 which can be installed to hone in your launch RPM. If you check out this video, you will hear the 2 step in action on the launch:

!

I will caution you, if you car has catalyst, you will not want to install this device. Feel free to contact me if you have any questions about this device.

[spacecowby]

Originally Posted by Jeff@Lingenfelter

We do offer the LNC-003 which can be installed to hone in your launch RPM. If you check out this video, you will hear the 2 step in action on the launch:

!

I will caution you, if you car has catalyst, you will not want to install this device. Feel free to contact me if you have any questions about this device.

Catalyst?

[Ivas]

Originally Posted by spacecowby

Catalyst?

Yeah, catalyst? What are you talkin' 'bout?

[CamaroSpike23]

Originally Posted by GenuineGM.com

Drag radials are a must to get those 60ft times down. I have used the Nitto 555r and the best 60ft so far was a 1.690 with 20psi in them. I have a set of MT radials I will be tryingout next week. I would recommed getting a line lock since this will help you get a more consistant burnout. As for the actual launch of the car you will need to experiement with different rpms and techniques until you can figure out what your tire and suspension likes. You may want to contact Lingenfelter about their 2-step.

Sam

Using a line lock for launching is not something you want to do. unless the car is moving at the start line. but you should be able to let off the brake completely once you've staged and not roll anywhere.

With a line lock on a manual, it helps out a lot when doing your burnouts, but you've got enough things to keep track of when you are launching a manual that you dont need to remember to disengage the line lock at the launch.

Originally Posted by danhr

think of it as a temporary 2nd rev limiter.

You have it hooked it up to a momentary button. Hold the button down, and floor the gas pedal, and your engine will be (spark limited) to a certain RPM. That way, each pass, you are launching at the same exact RPM. If you bog, turn the RPM up, if you spin, turn the RPM down.

When you want to go, let the clutch out and let go of the button.

It especially helps out FI cars, as it helps them build boost off the line.

GM installed one of these in the V8 M6's from the factory.

its called Launch Control

[danhr]

Originally Posted by CamaroSpike23

GM installed one of these in the V8 M6's from the factory.

its called Launch Control

But it isn't adjustable, so that means it only can be set to 2000 rpms .

On a decently prepped track with any kind of decent tires, a 2000 rpm launch will more than likely bog the car.