pic of my launch and results
pic of my launch and results i need to figure out what i'm doing wrong. this run was a 4000 dump, any higher and i'll spin. qtp's had 13lbs in them, hals were 3 in front, 4 in back. i have all suspension except for an adj. ta, i've got a bmr non adj. ta. do to my tsp duals. this run was:
60' 1.756
330 5.001
1/8 7.632
mph 94.47
1000 9.912
1/4 11.799
mph 120.38
this is 456 rwhp, see sig for motor. i went 11.55 @ 118 with stock heads and an f13 cam. just seems i should be running quicker.
60' 1.756
330 5.001
1/8 7.632
mph 94.47
1000 9.912
1/4 11.799
mph 120.38
this is 456 rwhp, see sig for motor. i went 11.55 @ 118 with stock heads and an f13 cam. just seems i should be running quicker.
Are the QA1's the f-series or r series? If they are the r-series I would run them at 1 in the front and 2 or 3 in the rear. If they are f-series, take them off and throw them in the garbage and order some r-series fronts. Remove your front swaybar too.
the back of your car is squatting prett bad...loosen the extension 1 click or 2 and then firm up your compression to 8 or so....
you dont want the car to lean back you want it to drop the axel/seperate it from the body and hold it down there...
you dont want the car to lean back you want it to drop the axel/seperate it from the body and hold it down there...
Originally Posted by bad2000z
Are the QA1's the f-series or r series? If they are the r-series I would run them at 1 in the front and 2 or 3 in the rear. If they are f-series, take them off and throw them in the garbage and order some r-series fronts. Remove your front swaybar too.
Stick cars usually like the rear suspension stiffer, I'd try tightening the rear shocks up some and try again. You're at the bottom of the air pressure, 12 psi is as low as I would go.
What does the car weigh, have you removed the bumper support yet? that seemed to help my car alot, any weight you can take off teh car is good, taking it off the front is better, in front of the front tires, the hardest weight to lift from the back, will help the most.
If you can, get an adjustable tq arm in there and put a little pinion angle to it, another thign I highly reccommend is the bmr or some type of crossmember to mount the tq arm to. This will keep the tranny mount alive alot longer, and will help the chassis not absorb some of the hit too, should help get the car moving better.
What does the car weigh, have you removed the bumper support yet? that seemed to help my car alot, any weight you can take off teh car is good, taking it off the front is better, in front of the front tires, the hardest weight to lift from the back, will help the most.
If you can, get an adjustable tq arm in there and put a little pinion angle to it, another thign I highly reccommend is the bmr or some type of crossmember to mount the tq arm to. This will keep the tranny mount alive alot longer, and will help the chassis not absorb some of the hit too, should help get the car moving better.
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Originally Posted by JL ws-6
Stick cars usually like the rear suspension stiffer, I'd try tightening the rear shocks up some and try again. You're at the bottom of the air pressure, 12 psi is as low as I would go.
What does the car weigh, have you removed the bumper support yet? that seemed to help my car alot, any weight you can take off teh car is good, taking it off the front is better, in front of the front tires, the hardest weight to lift from the back, will help the most.
If you can, get an adjustable tq arm in there and put a little pinion angle to it, another thign I highly reccommend is the bmr or some type of crossmember to mount the tq arm to. This will keep the tranny mount alive alot longer, and will help the chassis not absorb some of the hit too, should help get the car moving better.
What does the car weigh, have you removed the bumper support yet? that seemed to help my car alot, any weight you can take off teh car is good, taking it off the front is better, in front of the front tires, the hardest weight to lift from the back, will help the most.
If you can, get an adjustable tq arm in there and put a little pinion angle to it, another thign I highly reccommend is the bmr or some type of crossmember to mount the tq arm to. This will keep the tranny mount alive alot longer, and will help the chassis not absorb some of the hit too, should help get the car moving better.
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take out the front bumper support, if you are having traction issues taking the rear out will only hurt that. Plus if you drive it on the street you only have to worry about hitting something, not being rear ended (still have to worry buy ya get my point)
Goign softer on the rear shocks will cause more rear sag and will most likly not help unless you are spinning, if you are bogging it will not help at all.
If you have the blowproof bellhousing, try launching higher... I caution everyone with a stock ar to get the mcloud bellhousing, a pita to install yes, but it will keep your feet attached if somethign bad were to happen, which becomes alot mroe likly when you launch the car really hard IMO.
good on the crossmember, that helps. What holes do you have teh arm mounted in, and do you have relocation brackets on? Trying to determine your instant center... moving that will help the car hook up too.
Goign softer on the rear shocks will cause more rear sag and will most likly not help unless you are spinning, if you are bogging it will not help at all.
If you have the blowproof bellhousing, try launching higher... I caution everyone with a stock ar to get the mcloud bellhousing, a pita to install yes, but it will keep your feet attached if somethign bad were to happen, which becomes alot mroe likly when you launch the car really hard IMO.
good on the crossmember, that helps. What holes do you have teh arm mounted in, and do you have relocation brackets on? Trying to determine your instant center... moving that will help the car hook up too.
Originally Posted by JL ws-6
take out the front bumper support, if you are having traction issues taking the rear out will only hurt that. Plus if you drive it on the street you only have to worry about hitting something, not being rear ended (still have to worry buy ya get my point)
Goign softer on the rear shocks will cause more rear sag and will most likly not help unless you are spinning, if you are bogging it will not help at all.
If you have the blowproof bellhousing, try launching higher... I caution everyone with a stock ar to get the mcloud bellhousing, a pita to install yes, but it will keep your feet attached if somethign bad were to happen, which becomes alot mroe likly when you launch the car really hard IMO.
good on the crossmember, that helps. What holes do you have teh arm mounted in, and do you have relocation brackets on? Trying to determine your instant center... moving that will help the car hook up too.
Goign softer on the rear shocks will cause more rear sag and will most likly not help unless you are spinning, if you are bogging it will not help at all.
If you have the blowproof bellhousing, try launching higher... I caution everyone with a stock ar to get the mcloud bellhousing, a pita to install yes, but it will keep your feet attached if somethign bad were to happen, which becomes alot mroe likly when you launch the car really hard IMO.
good on the crossmember, that helps. What holes do you have teh arm mounted in, and do you have relocation brackets on? Trying to determine your instant center... moving that will help the car hook up too.
finally someone that put the safety stuff on first... good man.
Find out what hole you have the tq arm in, I assume you have the lca's one hole down from stock. if so good. Try moving the tq arm down a hole from where you have it, see what that gets you, if it got worse, then go up from where it was.... experimentation is the only real way.
Next time you go to the track, put the front shocks on 2 (1 being the loosest setting), set the swaybar with no preload at all, put the left rear shock on 5, right rear on 6, 12 psi in the tires, and try leaving at 5000. See what that gets you, if it hooks and leaves decent, then try leaving at 6000. If it spins, then try moving the tq arm bracket lower/higher.
Find out what hole you have the tq arm in, I assume you have the lca's one hole down from stock. if so good. Try moving the tq arm down a hole from where you have it, see what that gets you, if it got worse, then go up from where it was.... experimentation is the only real way.
Next time you go to the track, put the front shocks on 2 (1 being the loosest setting), set the swaybar with no preload at all, put the left rear shock on 5, right rear on 6, 12 psi in the tires, and try leaving at 5000. See what that gets you, if it hooks and leaves decent, then try leaving at 6000. If it spins, then try moving the tq arm bracket lower/higher.
Bad2000Z .. QA1 (non r) are just fine.. I have been low 1.3, and will be in 1.2's soon on ones that you suggest to "throw in the garbage".
Agree with setting your shocks a little different - 2-3 in front; 6-8 in back. Get an adjustable TQ. Get the pinion down to about -2. How's the track's condition. You should be able to launch a lot higher than 4000.
As MadMan always says: girls squat, race cars don't.
David
Agree with setting your shocks a little different - 2-3 in front; 6-8 in back. Get an adjustable TQ. Get the pinion down to about -2. How's the track's condition. You should be able to launch a lot higher than 4000.
As MadMan always says: girls squat, race cars don't.
David
I have had many 1.4-1.5 60 foots in my old f bodys and other customers cars and this is how we set it up.
On the hals turn the *** all the way counter clockwise on the fronts and one click to the clockwise direction that is setting 2 for the front. On the rear all the way counter clockwise and 6 click clockwise that will be setting 7 on the rear. Also on the qtp tires air them down to 11psi warm. Also how old are the tires were they used did you get them new tires are only good one season then throw them away no matter how warn the are. Let us know how it works out. You will geed to get it to leave with more rpm otherwise it wont leave hard enought 5200 is a good starting point.
On the hals turn the *** all the way counter clockwise on the fronts and one click to the clockwise direction that is setting 2 for the front. On the rear all the way counter clockwise and 6 click clockwise that will be setting 7 on the rear. Also on the qtp tires air them down to 11psi warm. Also how old are the tires were they used did you get them new tires are only good one season then throw them away no matter how warn the are. Let us know how it works out. You will geed to get it to leave with more rpm otherwise it wont leave hard enought 5200 is a good starting point.
Originally Posted by ss2000
i need to figure out what i'm doing wrong. this run was a 4000 dump, any higher and i'll spin. qtp's had 13lbs in them, hals were 3 in front, 4 in back. i have all suspension except for an adj. ta, i've got a bmr non adj. ta. do to my tsp duals. this run was:
60' 1.756
330 5.001
1/8 7.632
mph 94.47
1000 9.912
1/4 11.799
mph 120.38
this is 456 rwhp, see sig for motor. i went 11.55 @ 118 with stock heads and an f13 cam. just seems i should be running quicker.
60' 1.756
330 5.001
1/8 7.632
mph 94.47
1000 9.912
1/4 11.799
mph 120.38
this is 456 rwhp, see sig for motor. i went 11.55 @ 118 with stock heads and an f13 cam. just seems i should be running quicker.