QA-1 rear shocks question
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From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Here are two pics of my car car. One is parked and one is off the brake with over 850 hp and a 1.15xx 60' Look closely at the body line of the rear of the car and how it relates to the tire......no squat. The body has not dropped over the tire at all. This is what you want.
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Originally Posted by 69 N.O.X. RATT
Sorry about the big pic, it was saved wrong in the computer.
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From: Pettis Performance 565 with two stages of Nitrous Supply nitrous 1.082, 4.61 at 155, 7.17 at 192
Originally Posted by GrandSportC3
A video of the rear tire while launching would be great!! Do you have any videos of a launch?
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Oliver....while watching Johns video will surely be fun....it's not going to do a whole lot to help your car. He has a four link suspension and it is a dedicated purpose built drag car. It will behave drastically different than any of our stuff. His car will transfer weight so quickly and smoothly, it will just makes us feel bad!
But if you watch it to get an idea of the direction you want to go..that's cool. Your car will need more front end lift than he has and we don't really have much in the way of suspension leverage action that a 4 link or any other design for that matter. All we have is that spring and the shocks. Since our rear bolts to frame, we don't get any real lift off control aroms like a regular car does. The only way we get that is from the spring not compressing and it pulling down hard on the rear part of trailing arms. That pulls the tire down into the pavement. As John has been saying, a weak spring just allows the body to keep dropping and NOT pull down on rear of arms..thus giving less traction.
I still say you need to leave spring alone and get some decent shocks for sure first. Your car is pulling down on the spring to get tires to hook, but your shocks aren't stout enough to get it to stay there. The QA-1's will add some extra tension on the down side, which isn't bad...and then add some on the rebound which is what you really need.
The part about halfshafts is right. I think you're Ok as high as you have it sitting, but make sure that when the suspension is compressed in *launch mode* that the halfshafts are parallel...NEVER pointing upwards at the end even for a nano-second!
If you lower the front you will cause the car to have more lift to do. Might not get higher wheelies, but that's not the point. If you have the wheels just kissing the ground or maybe an inch off the ground..you're doing fine. All the weight is already on rear tires Any higher is just wasted motion.
JIM
JIM
But if you watch it to get an idea of the direction you want to go..that's cool. Your car will need more front end lift than he has and we don't really have much in the way of suspension leverage action that a 4 link or any other design for that matter. All we have is that spring and the shocks. Since our rear bolts to frame, we don't get any real lift off control aroms like a regular car does. The only way we get that is from the spring not compressing and it pulling down hard on the rear part of trailing arms. That pulls the tire down into the pavement. As John has been saying, a weak spring just allows the body to keep dropping and NOT pull down on rear of arms..thus giving less traction.
I still say you need to leave spring alone and get some decent shocks for sure first. Your car is pulling down on the spring to get tires to hook, but your shocks aren't stout enough to get it to stay there. The QA-1's will add some extra tension on the down side, which isn't bad...and then add some on the rebound which is what you really need.
The part about halfshafts is right. I think you're Ok as high as you have it sitting, but make sure that when the suspension is compressed in *launch mode* that the halfshafts are parallel...NEVER pointing upwards at the end even for a nano-second!
If you lower the front you will cause the car to have more lift to do. Might not get higher wheelies, but that's not the point. If you have the wheels just kissing the ground or maybe an inch off the ground..you're doing fine. All the weight is already on rear tires Any higher is just wasted motion.
JIM
JIM
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Originally Posted by 69 N.O.X. RATT
We are renting the track on Sunday, I will take lots of video then.
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Originally Posted by 427Hotrod
Oliver....while watching Johns video will surely be fun....it's not going to do a whole lot to help your car. He has a four link suspension and it is a dedicated purpose built drag car. It will behave drastically different than any of our stuff. His car will transfer weight so quickly and smoothly, it will just makes us feel bad!
But if you watch it to get an idea of the direction you want to go..that's cool. Your car will need more front end lift than he has and we don't really have much in the way of suspension leverage action that a 4 link or any other design for that matter. All we have is that spring and the shocks. Since our rear bolts to frame, we don't get any real lift off control aroms like a regular car does. The only way we get that is from the spring not compressing and it pulling down hard on the rear part of trailing arms. That pulls the tire down into the pavement. As John has been saying, a weak spring just allows the body to keep dropping and NOT pull down on rear of arms..thus giving less traction.
I still say you need to leave spring alone and get some decent shocks for sure first. Your car is pulling down on the spring to get tires to hook, but your shocks aren't stout enough to get it to stay there. The QA-1's will add some extra tension on the down side, which isn't bad...and then add some on the rebound which is what you really need.
The part about halfshafts is right. I think you're Ok as high as you have it sitting, but make sure that when the suspension is compressed in *launch mode* that the halfshafts are parallel...NEVER pointing upwards at the end even for a nano-second!
If you lower the front you will cause the car to have more lift to do. Might not get higher wheelies, but that's not the point. If you have the wheels just kissing the ground or maybe an inch off the ground..you're doing fine. All the weight is already on rear tires Any higher is just wasted motion.
JIM
JIM
But if you watch it to get an idea of the direction you want to go..that's cool. Your car will need more front end lift than he has and we don't really have much in the way of suspension leverage action that a 4 link or any other design for that matter. All we have is that spring and the shocks. Since our rear bolts to frame, we don't get any real lift off control aroms like a regular car does. The only way we get that is from the spring not compressing and it pulling down hard on the rear part of trailing arms. That pulls the tire down into the pavement. As John has been saying, a weak spring just allows the body to keep dropping and NOT pull down on rear of arms..thus giving less traction.
I still say you need to leave spring alone and get some decent shocks for sure first. Your car is pulling down on the spring to get tires to hook, but your shocks aren't stout enough to get it to stay there. The QA-1's will add some extra tension on the down side, which isn't bad...and then add some on the rebound which is what you really need.
The part about halfshafts is right. I think you're Ok as high as you have it sitting, but make sure that when the suspension is compressed in *launch mode* that the halfshafts are parallel...NEVER pointing upwards at the end even for a nano-second!
If you lower the front you will cause the car to have more lift to do. Might not get higher wheelies, but that's not the point. If you have the wheels just kissing the ground or maybe an inch off the ground..you're doing fine. All the weight is already on rear tires Any higher is just wasted motion.
JIM
JIM
The new front springs will go on the car after the Cruise In!
Drifting
Joined: Sep 2004
Posts: 1,959
Likes: 1
From: North Bend Ohio
Originally Posted by GrandSportC3
With a 60/40 front setting, I'll probably not even get the front wheels off the ground but I do want them off the ground.. The goal of my suspension change is to get the wheels off the ground higher and for a longer distance.. I don't have a traction problem!! The car hooks fine!!
BigBlockk
Later.....
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Thread Starter
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Originally Posted by BigBlockk
If the car doesn't have a traction problem, why do you want to carry the front wheels higher and farther?
BigBlockk
Later.....
BigBlockk
Later.....
Drifting
Joined: Sep 2004
Posts: 1,959
Likes: 1
From: North Bend Ohio
Oh. Ok, so this isn't about making your car perform better? If you just want to look cool why not do this.
http://www.gilchristbnw.com/GPC/WS-Gallery242.html
BigBlockk
Later.....
http://www.gilchristbnw.com/GPC/WS-Gallery242.html
BigBlockk
Later.....
Thread Starter
Team Owner
Joined: Jul 2001
Posts: 182,997
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From: Lakeland, FL
Cruise-In IV-V-VI-VII-VIII Veteran
St. Jude Donor '03, '06, '17
Originally Posted by BigBlockk
Oh. Ok, so this isn't about making your car perform better? If you just want to look cool why not do this.
http://www.gilchristbnw.com/GPC/WS-Gallery242.html
BigBlockk
Later.....
http://www.gilchristbnw.com/GPC/WS-Gallery242.html
BigBlockk
Later.....
Thread Starter
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
Originally Posted by Russ57
at Jegs mine were 125 a piece for rear
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From: Lakeland, FL
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St. Jude Donor '03, '06, '17
I wonder if I'll get the QA1's on my way up to the cruise in if they could be installed in the parking lot with basic tools and a jack?
I don't know if I'll be able to separate the shock mount from the trailing arm... They are usually VERY tight
EDIT: Figured it out.. The shock mount doesn't need to be removed to install the shock
I don't know if I'll be able to separate the shock mount from the trailing arm... They are usually VERY tight
EDIT: Figured it out.. The shock mount doesn't need to be removed to install the shock
Last edited by GrandSportC3; May 21, 2006 at 06:37 PM.