[Z06] launch
Thread Starter
Racer
Joined: Nov 2005
Posts: 445
Likes: 0
From: san jose california
launch
I just install a new centerforce dual friction clutch with an alluminum flywheel on my 02 Z06 I already have the raptor xxl cai and mickey's et slicks, what RPM range should I launch to be safe
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
Might want to take a read through the write up on Z06 launch techniques in my signature. It's a place to start.
The clutch you've chosen will bite hard and it will be less inclined to support a small amount of slip.
Have you hardened up the rear end?
Are the MTs the radial or bias-ply version?
Ranger
The clutch you've chosen will bite hard and it will be less inclined to support a small amount of slip.
Have you hardened up the rear end?
Are the MTs the radial or bias-ply version?
Ranger
Last edited by Ranger; Jun 9, 2006 at 08:26 AM.
Le Mans Master
Joined: Nov 2003
Posts: 8,308
Likes: 157
From: NJ
As Ranger has mentioned, we need more info. If you had a guarantee that your car wouldn't break something, you could probably launch off the limiter on a stock car with et streets/drags. Alot depends of rwhp,tire size,temp,prep, etc. If you have mt etstreets and 370 rwhp you might want to keep them aired up(22 psi-24psi) for starters and see how the car reacts. You don't want bog. Give us more details and we can guide you better.
Strong clutch/high launch + Mt slicks = increased chance of breakage.
Strong clutch/high launch + Mt slicks = increased chance of breakage.
Race Director
Joined: Aug 2000
Posts: 10,649
Likes: 31
From: Central Florida
You have a risky combo. As robz said, the stronger clamping force of the aftermarket clutch will accentuate the hook-shock of the ET Street bias-ply tires and thereby transfer a greater shock to the rear end.
You may be OK. You may break the rear. QuickSilver ran 11.40 with your combo except Nitto DRs, at least for a few passes and then disappeared. So not sure if he eventually broke the rear.
So it's a crap shoot without hardened shafts in the rear.
I'd suggest starting at 4K and see that happen. But a dead hook is the biggest risk. You want to avoid that.
Robz may have more light to shed.
Ranger
You may be OK. You may break the rear. QuickSilver ran 11.40 with your combo except Nitto DRs, at least for a few passes and then disappeared. So not sure if he eventually broke the rear.
So it's a crap shoot without hardened shafts in the rear.
I'd suggest starting at 4K and see that happen. But a dead hook is the biggest risk. You want to avoid that.
Robz may have more light to shed.
Ranger
Intermediate
Joined: Mar 2006
Posts: 34
Likes: 0
From: white ga.
blown o6 z06
Originally Posted by Ranger
You have a risky combo. As robz said, the stronger clamping force of the aftermarket clutch will accentuate the hook-shock of the ET Street bias-ply tires and thereby transfer a greater shock to the rear end.
You may be OK. You may break the rear. QuickSilver ran 11.40 with your combo except Nitto DRs, at least for a few passes and then disappeared. So not sure if he eventually broke the rear.
So it's a crap shoot without hardened shafts in the rear.
I'd suggest starting at 4K and see that happen. But a dead hook is the biggest risk. You want to avoid that.
Robz may have more light to shed.
Ranger
You may be OK. You may break the rear. QuickSilver ran 11.40 with your combo except Nitto DRs, at least for a few passes and then disappeared. So not sure if he eventually broke the rear.
So it's a crap shoot without hardened shafts in the rear.
I'd suggest starting at 4K and see that happen. But a dead hook is the biggest risk. You want to avoid that.
Robz may have more light to shed.
Ranger
Collections Hold
Joined: May 2003
Posts: 3,520
Likes: 2
From: Tacoma WA
I was able to get 150+ runs in before the dreaded dead hook and left shaft breakage. I had a DTE strut and a Aussie clutch with 315 DFG drs. Launch rpm for me was average 4500/5500, and the one that broke me was a 5600rpm. Now hardened shaft is going in. You may last a while, then again could go right away. I am also moving to the ET Street, as from what I hear they may be able to absorb some of the intial shock that a dr cannot which will/may save some breakage woes. Then again they stick mucho better?
Robert
Robert
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