10secTy
Sy-Ty builder and Tuner
Well made it out the the track today. I made some changes to the way the suspention is set up.
First I backed off the torsen bar mounts and dropped the front end about another 3/4"
Second I installed 2" tall poly bump stops for my limiters so that I could crank them down and preload it agaist the suspention. I got Barb (wife) to sit on the front fender while I tightened them down so set up like this the front end was about 1.5" down now.
Third I moved the Caltrac bar in the upper position so that they hit the rear end more and tried to pick up the front end less. It gets the rear diff to dig more.
Fourth I took out the preload in the Caltracs and have about 1/16" clearance.
Fifth I set the QA1 rear shocks at number 3 instead of 12.
Tire pressures where 20psi front and 19psi back on the BFG's.
My thinking was that the front end was still coming up to much and with the caltracs and stiff rear suspention if was just pivoting on the rear tires.
Now set up like this the front barely comes up and the rear end squats down nicely.
Now the results.
first run about 23-24psi and 8 psi launch.
60'---1.624
330'---4.528
1/8---6.995
MPH---99.60
1000'---9.133
1/4---10.940
MPH---122.41
Second run 26-27 psi and 12 psi launch
60'---1.513
330---4.417
1/8---6.893
MPH---99.56
1000'---9.041
1/4---10.850
MPH---124.67
Third run 30psi and 14-15 psi launch
60'---1.504
330---4.375
1/8---6.838
MPH---100.06 (yay finally broke thru
)
1000'---8.969
1/4---10.79
MPH---123.49
There was very minimal tire spin and the truck ran great.
This is at a race weight of 4100.
I think that will be it for this year my wife needs to drive the truck to work for a month or two :roll: while I build her Typhoon. I have had a set of Green Dots on order for about 3 weeks they are out of core tires. If they show up for the final Oct 10th race I might head out.
Nolan
First I backed off the torsen bar mounts and dropped the front end about another 3/4"
Second I installed 2" tall poly bump stops for my limiters so that I could crank them down and preload it agaist the suspention. I got Barb (wife) to sit on the front fender while I tightened them down so set up like this the front end was about 1.5" down now.
Third I moved the Caltrac bar in the upper position so that they hit the rear end more and tried to pick up the front end less. It gets the rear diff to dig more.
Fourth I took out the preload in the Caltracs and have about 1/16" clearance.
Fifth I set the QA1 rear shocks at number 3 instead of 12.
Tire pressures where 20psi front and 19psi back on the BFG's.
My thinking was that the front end was still coming up to much and with the caltracs and stiff rear suspention if was just pivoting on the rear tires.
Now set up like this the front barely comes up and the rear end squats down nicely.
Now the results.
first run about 23-24psi and 8 psi launch.
60'---1.624
330'---4.528
1/8---6.995
MPH---99.60
1000'---9.133
1/4---10.940
MPH---122.41
Second run 26-27 psi and 12 psi launch
60'---1.513
330---4.417
1/8---6.893
MPH---99.56
1000'---9.041
1/4---10.850
MPH---124.67
Third run 30psi and 14-15 psi launch
60'---1.504
330---4.375
1/8---6.838
MPH---100.06 (yay finally broke thru
1000'---8.969
1/4---10.79
MPH---123.49
There was very minimal tire spin and the truck ran great.
This is at a race weight of 4100.
I think that will be it for this year my wife needs to drive the truck to work for a month or two :roll: while I build her Typhoon. I have had a set of Green Dots on order for about 3 weeks they are out of core tires. If they show up for the final Oct 10th race I might head out.
Nolan