Suspension gurus come in here *VID*
Suspension gurus come in here *VID* Hey guys I am needing some help getting my car to launch better. I currently have
MWC fab 9" with 3.25 gears spool
MWC short torque arm set in the 2nd hole from the bottom -1 angle
MWC anti roll kit
Strange single's set at middle position
stock springs and of course lca, panhard bar, subframe connectors
TH400 w/vig 4000 stall (way to loose for the moment) and foot braking
28x11.50 16's hoosier qtp @ 10psi
Car weight is 3800ish
Car was cutting 1.5x and low 1.6x's. You can see the rear of the car raising a lot (i think) and can hear the slicks barking. Any thoughts?
http://www.youtube.com/watch?v=fPqkLX2NQCc
MWC fab 9" with 3.25 gears spool
MWC short torque arm set in the 2nd hole from the bottom -1 angle
MWC anti roll kit
Strange single's set at middle position
stock springs and of course lca, panhard bar, subframe connectors
TH400 w/vig 4000 stall (way to loose for the moment) and foot braking
28x11.50 16's hoosier qtp @ 10psi
Car weight is 3800ish
Car was cutting 1.5x and low 1.6x's. You can see the rear of the car raising a lot (i think) and can hear the slicks barking. Any thoughts?
http://www.youtube.com/watch?v=fPqkLX2NQCc
Push the LCAs up a hole on the rear end or drop the rear spring down an inch and test. You've got too much anti-squat %. You can see the weight transfer try to counter it after the hit, but it's too late as you're already on the converter, the rear end is already trying to push under the car and the LCA geometry issue has compounded. This wastes both energy that can be used for forward movement AND it's taking away weight transfer by over compensating. A.S. is good, just not in that much quantity. 
it looks like you are bringing the the car up onto the converter with the foot brake action. what kinda rpms you holding it at on the line? I'd say have it at about 2000 and flash it. i agree with the above, and loading the front end by being on the converter is compounding the weight transfer problem. what kinda suspension stuff you have up front?
by raising up the LCA's you effectively lower the rear of the car/shock. this is going to bring the weight to the rear and help squat
i guess the first question is do you have lca relocators?
I may have it backwards, my brain hurts right now lol
i guess the first question is do you have lca relocators?
I may have it backwards, my brain hurts right now lol
it looks like you are bringing the the car up onto the converter with the foot brake action. what kinda rpms you holding it at on the line? I'd say have it at about 2000 and flash it. i agree with the above, and loading the front end by being on the converter is compounding the weight transfer problem. what kinda suspension stuff you have up front?
Yes I do have 4 positions for my lca's.
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Verdad Gallardo If you've got holes available to move up in the LCA brackets, just pop them up one set and test. The difference will be noticeable. In very basic terms, you're shooting for weight transfer to perfectly offset anti-squat when the car leaves (ie: weight transfer factored in). The lower the LCA is on the axle housing, the higher the AS. You're simply trying to push straight through the center of gravity of the car. Right now, you're pushing over it. That's all .
. 
Lotta horses-nice.
When you footbrake, depending on how much rpm-you can preload that suspension, sometimes, depending on things, like vehicle weight, the car may not like it and transferring weight at the hit will suffer. Ever notice if you footbrake with enough rpms the rear of the car will start to raise up? You are already losing the battle before you break the beams.
I'm guessing you are footbraking to bring the rpms up cause its a turbo car but IMO that is uspetting your chassis. Couple of ideas-take them or leave them, I am no turbo expert.
You'll need to bring your rpms up more efficently-meaning no footbraking. 2 step-little nitrous maybe-whatever. Your car is too damn heavy to intefere with the suspension and chassis.
You need to get more stored energy up front. What's that mean? Means you need the lowest rated spring to maintain front ride height. You want that front spring cranked way up to nearly the top of the threads on the shocks so the coil is so tight it wants to flip your car over when you give it throttle.
Single adjustables are fine, you'll want to keep the fronts damn near zero to get the front end to pop up so you can keep the weight on the rear.
IMO you have way to much horsepower and too small of a tire and too much weight for a transbrake to fix your 60' issues.
Get a pair of Madman SYA bars. If you take my advice-you may well need them.
When you footbrake, depending on how much rpm-you can preload that suspension, sometimes, depending on things, like vehicle weight, the car may not like it and transferring weight at the hit will suffer. Ever notice if you footbrake with enough rpms the rear of the car will start to raise up? You are already losing the battle before you break the beams.
I'm guessing you are footbraking to bring the rpms up cause its a turbo car but IMO that is uspetting your chassis. Couple of ideas-take them or leave them, I am no turbo expert.
You'll need to bring your rpms up more efficently-meaning no footbraking. 2 step-little nitrous maybe-whatever. Your car is too damn heavy to intefere with the suspension and chassis.
You need to get more stored energy up front. What's that mean? Means you need the lowest rated spring to maintain front ride height. You want that front spring cranked way up to nearly the top of the threads on the shocks so the coil is so tight it wants to flip your car over when you give it throttle.
Single adjustables are fine, you'll want to keep the fronts damn near zero to get the front end to pop up so you can keep the weight on the rear.
IMO you have way to much horsepower and too small of a tire and too much weight for a transbrake to fix your 60' issues.
Get a pair of Madman SYA bars. If you take my advice-you may well need them.
Lotta horses-nice.
When you footbrake, depending on how much rpm-you can preload that suspension, sometimes, depending on things, like vehicle weight, the car may not like it and transferring weight at the hit will suffer. Ever notice if you footbrake with enough rpms the rear of the car will start to raise up? You are already losing the battle before you break the beams.
I'm guessing you are footbraking to bring the rpms up cause its a turbo car but IMO that is uspetting your chassis. Couple of ideas-take them or leave them, I am no turbo expert.
You'll need to bring your rpms up more efficently-meaning no footbraking. 2 step-little nitrous maybe-whatever. Your car is too damn heavy to intefere with the suspension and chassis.
You need to get more stored energy up front. What's that mean? Means you need the lowest rated spring to maintain front ride height. You want that front spring cranked way up to nearly the top of the threads on the shocks so the coil is so tight it wants to flip your car over when you give it throttle.
Single adjustables are fine, you'll want to keep the fronts damn near zero to get the front end to pop up so you can keep the weight on the rear.
IMO you have way to much horsepower and too small of a tire and too much weight for a transbrake to fix your 60' issues.
Get a pair of Madman SYA bars. If you take my advice-you may well need them.
When you footbrake, depending on how much rpm-you can preload that suspension, sometimes, depending on things, like vehicle weight, the car may not like it and transferring weight at the hit will suffer. Ever notice if you footbrake with enough rpms the rear of the car will start to raise up? You are already losing the battle before you break the beams.
I'm guessing you are footbraking to bring the rpms up cause its a turbo car but IMO that is uspetting your chassis. Couple of ideas-take them or leave them, I am no turbo expert.
You'll need to bring your rpms up more efficently-meaning no footbraking. 2 step-little nitrous maybe-whatever. Your car is too damn heavy to intefere with the suspension and chassis.
You need to get more stored energy up front. What's that mean? Means you need the lowest rated spring to maintain front ride height. You want that front spring cranked way up to nearly the top of the threads on the shocks so the coil is so tight it wants to flip your car over when you give it throttle.
Single adjustables are fine, you'll want to keep the fronts damn near zero to get the front end to pop up so you can keep the weight on the rear.
IMO you have way to much horsepower and too small of a tire and too much weight for a transbrake to fix your 60' issues.
Get a pair of Madman SYA bars. If you take my advice-you may well need them.