launching rpms

[Joe Ciechowski]

On a stock gst 4g63t what rpms are you guys launching at? I either spin or the car falls on its face.....

 

[gst-turbo]

On street tires or slicks

 

[1g Cam]

I wouldn't want to do that without a built transmission.

 

[Joe Ciechowski]

Street tires

 

[cmehlxl]

2.5k-3k slip the clutch, roll into it. i would not drop the clutch at 4k w/ stock clutch/trans.

you'll hear the phrase "slip it and rip it" repeated 10,000,000 times on this site

 

[sidewaystsi]

2.5k-3k slip the clutch, roll into it. i would not drop the clutch at 4k w/ stock clutch/trans.

you'll hear the phrase "slip it and rip it" repeated 10,000,000 times on this site

This, work on your clutch release.

 

[Brandon Mau]

First things first you need to fill out a profile of your car, FWD,AWD mods ect.... Secondly it will not be the same for everyone camshafts, turbo selection, intake manifold there are many things to take into consideration. The key is to make sure the drivetrain is pre-loaded on the launch. Is our drivetrain the greatest thing ever no, but a built transmission is essentially a stock transmission with some cryo treated parts, micro polished and different bearing pre-loads unless you go to a dogbox which the average DSMer cannot afford or is only trailering the car to the track. You really need to do some research on the subject. I was running a 82,000 mile un-touched manual transmission and snapped a rear axle after about 50 drag passes. I was running street tires and getting no wheel hop. Started at 5,000 RPM and my sweet spot for my set-up was around 7,000 RPM. But until we know what you are running on your car even engine management is a huge factor because then you have the option for 2-step launch control.

 

[Chumpaumpalumpa]

First things first you need to fill out a profile of your car, FWD,AWD mods ect.... Secondly it will not be the same for everyone camshafts, turbo selection, intake manifold there are many things to take into consideration. The key is to make sure the drivetrain is pre-loaded on the launch. Is our drivetrain the greatest thing ever no, but a built transmission is essentially a stock transmission with some cryo treated parts, micro polished and different bearing pre-loads unless you go to a dogbox which the average DSMer cannot afford or is only trailering the car to the track. You really need to do some research on the subject. I was running a 82,000 mile un-touched manual transmission and snapped a rear axle after about 50 drag passes. I was running street tires and getting no wheel hop. Started at 5,000 RPM and my sweet spot for my set-up was around 7,000 RPM. But until we know what you are running on your car even engine management is a huge factor because then you have the option for 2-step launch control.

He's stock. AWD or FWD would be good to know OP

 

[Cooper-97gst]

He has a gst.

 

[oneslowwdsm]

A GST is tough especially on the street where bumps and crevices in the road can kill your launch. I personally never launched GSTs for the sole fact that I knew it would be pointless. Best thing you can do is get the widest tire to fit (245-255) with a decent sidewall, some solid mounts and even a boost by gear tune when you get into bigger turbo applications. Good luck.

 

[cmehlxl]

I didn't see It said GST.. Then 4-5k Clutch drops All day

 

[Dsmkauai]

I was always around 3500 on street tires (hankooks), lightly slipping the clutch and lowering the tire pressure to like 20-22psi. And 5250 on the 2 step with 8-10psi boost on my qtp's (10psi), cutting low 1.7 60' . Definitely helps to slip the clutch just right. Seat time and feeling out your setup is really what will pay off! Have to have to have the right clutch setup. And depending on power level plan to break a few axles trying . Terhune race axles ftw!

 

[GST Jeremy]

I have a gst and its tough to get consistent launches on street tires. Mine is always right on the edge of blowing the tires off. It makes it fun and frustrating in first gear. mine is tough to keep traction in 2nd makes me want AWD