So I got the twincharged 6MT SSEi out to the track finally. 15.0 @ 96mph, 2.5 60', 7.5psi boost max according to the scangauge.
So - wheel hop. When I go to launch the car in a more serious racetrack manner, it hooks hard but within 10ft it starts to wheel hop. It's not peeling out, just starts to wheel hop and of course I had to lift some to get it to stop or risk exploding the trans. But I was not really expecting that. It will wheel hop on wet pavement too if I just let the clutch drop, I thought that was because of the crappy roads out here until now.
The suspension setup: hockey puck mounts on the subframe, puck mounts in on the rear drivetrain mounts, poly on the front torqued down hard. There is not much play in the motor mounts, motor is far more tied down than stock would have been. LCA bushings are OE, strut mounts are OE replacements, front springs are a random W-body spring, KYB AGXs set to 4 (can't hook as well at lower settings), sway bar links are poly. I get nearly zero torque steer. Axles are the 800hp DSS monsters, using the Saab/Cobalt jackshaft. Tires are some form of rubber in a circle shape at 5/32 made by Continental.
If I ease into the clutch and roll into the throttle I can keep it out of hopping (a rolling start with controlled throttle works too). But the best I can manage is a 2.4 60' before wheel hop, and the trap speed is 2-3mph, ET .3 slower compared to the 2.5 with wheel hop. So that's no fun.
Thoughts? Too little spring up front - too much solid mount - not enough tire - not enough strut?
Last time I ran was with the NIC and a 3.25 on the gen 3, still with the slushbox 4t65, didn't see any wheel hop.
And thanks to a friend, here is the video of the run. Hooks, goes, wheel hops (with associated screeches as it grabs and hops again), all the way through 1st gear.
http://vid571.photobucket.com/albums/ss151/styxm18/Das Weiss/SSEi Launch_zpshfbc1qy6.mp4
So - wheel hop. When I go to launch the car in a more serious racetrack manner, it hooks hard but within 10ft it starts to wheel hop. It's not peeling out, just starts to wheel hop and of course I had to lift some to get it to stop or risk exploding the trans. But I was not really expecting that. It will wheel hop on wet pavement too if I just let the clutch drop, I thought that was because of the crappy roads out here until now.
The suspension setup: hockey puck mounts on the subframe, puck mounts in on the rear drivetrain mounts, poly on the front torqued down hard. There is not much play in the motor mounts, motor is far more tied down than stock would have been. LCA bushings are OE, strut mounts are OE replacements, front springs are a random W-body spring, KYB AGXs set to 4 (can't hook as well at lower settings), sway bar links are poly. I get nearly zero torque steer. Axles are the 800hp DSS monsters, using the Saab/Cobalt jackshaft. Tires are some form of rubber in a circle shape at 5/32 made by Continental.
If I ease into the clutch and roll into the throttle I can keep it out of hopping (a rolling start with controlled throttle works too). But the best I can manage is a 2.4 60' before wheel hop, and the trap speed is 2-3mph, ET .3 slower compared to the 2.5 with wheel hop. So that's no fun.
Thoughts? Too little spring up front - too much solid mount - not enough tire - not enough strut?
Last time I ran was with the NIC and a 3.25 on the gen 3, still with the slushbox 4t65, didn't see any wheel hop.
And thanks to a friend, here is the video of the run. Hooks, goes, wheel hops (with associated screeches as it grabs and hops again), all the way through 1st gear.
http://vid571.photobucket.com/albums/ss151/styxm18/Das Weiss/SSEi Launch_zpshfbc1qy6.mp4