Launch Tuning
#1
Junior Member
SHOW GUEST
Thread Starter
Join Date: Jun 2007
Posts: 9
Launch Tuning
Hi All, To cut to the chase my car seems to launch hard and go straight during the day (wheels up 6.80's) on a clean track. later on after the cool down and track rubbers up it pulls hard left on launch. Is there any way to get a happy medium on this? I needed ladder bar preload on RR to make it work early but now after dark it almost seems like it's too much. Ladder bars are non adjustable so I have to remedy this with shocks or pressures. Shocks are now at 90/10 and 50/50. Thanks for any suggestions!
#6
Junior Member
SHOW GUEST
Thread Starter
Join Date: Jun 2007
Posts: 9
Thanks for the input guys, I'll check the roll out in the back again but it was pretty close before. Bill, if I install some screws in my upper A arm that will bottom out on rise how much should I limit it vs how it was to see some difference? couple of threads, 1/4" 1/2" ect. I think making that mod now will be better for the future adjustability anyway. Simple enough to try the shock adjust too.
#7
Senior Member
MASTER BUILDER
Join Date: Sep 2005
Posts: 134
Jack the front up with both wheels hanging.Measure from the fenders down to the tops of the tires,set your stop so the left side is 1 inch less at the tire.Try that.If you you have single adj.shocks you will be taking out compresion when adding rebound,try the the brakes before jumping on them at the strip.The left front might dive.Good luck gitting it strait.Bill.
#8
Senior Member
SENIOR BUILDER
Join Date: Feb 2005
Location: LAWTON MI
Posts: 113
Originally Posted by dirt91
right is border line too low at 9, had 9.5-10 in LR to try to correct but no effect. I'm afraid if I add to LR it will lose traction and make it worse. they are 29 12 15 D05 Hoosiers
Thanks!
Thanks!
#10
Senior Member
RACING JUNKIE
Join Date: Jan 2006
Location: La.
Posts: 2,890
I'm having a little problem understanding this problem, correct me if i'm wrong, but if the car hooks good and goes straight on the launch, why would you care if the left front tire is carried a little higher and long if the car is performing consistently. My car has always pulled the left front tire higher than the right side (4 link setup). We scaled it a couple yrs ago and did all the correct adjustments, the car runs straight as a bullit but still lifts the left front tire about 4" while the right is barely touching the track. It used to do 4 ft wheelies before scaling the car.
JMO
Zip.
JMO
Zip.