Okay I know that my LCAs have a really bad angle. Their pointing up pretty good. I was considering picking up a set of LCA relocation brackets. But heres the thing I was wondering. Whats the difference that you notice? I'm more thinking about turn wise not really off the line traction. Does it grip the road better? Thanks

 

i drove a lowered 4thgen LS1 TA with stock hwy gears and stock LCA settings.. then 2 months later with a diff rear that had the relocation brackets..

i cant comment on accel because of the gears and the time diff between runs, but i do know that the rear of the car felt more "solidly" connected to the ground around some high speed sweepers... before it felt alot lighter.. and hitting a bump had cause some more rear drift then it did after the swap..



id assume since the rear suspesion is almost identical, the same would apply.

 

You may not "feel" a difference but it is there. Even if your car is not lowered (it is essetial when it is) you change the angle of the LCA. Changing the angle in the mannor that they do distributes more net force in the downward direction and less in the horizontal.

 

They greatly improved my car's forward bite coming out of corners.

 

Install LCA relocators and it will turn different when you lower the rear angle. The lowered angle will cause the rear to be more loose.

High in the front, low in the rear causes roll oversteer.

Low in the front high in the rear causes roll understeer (Rear wheels/axle steers towards the corner holding the rear of the car inward to the corner)

 

yes, agood hit it there, if you get the axle side of the LCA lower than the front, you will have roll oversteer. but whether that is worse the the lack of grip coming out of the corner is debatable.

btw, since you car is SO low, you might try to PM cheezx, ask about brackets for cars that are extremely lowered

 

Precisely..... but on the other hand, forward bite = the exact opposite of "loose", by definition..... this discussion and the proponent of this idea is familiar ground.

A car rolling through the corner under no power (the circumstance where the LAC angle causes roll oversteer) is not the real world condition of use. The guy that can get back in the gas sooner will come off the corner harder, go down the straight (if any) faster, and have the opportunity to wear out his brakes sooner than the guy whose car merely coasts through the corner until he reaches a straight and can get back to the gas. He will also win the race.

 

I was thinking about using these too. I would only care about the traction out of the hole and was thinking that they might be agood Idea. the car is stock hight but, I have the whole spohn T/A comming next week

my control arms are boxed and have the poly bushings in them.

 

yes, but there are also other ways to get the anti-squat that gives you the forward bite, without cause unwanted roll steer. shortening the torque arm comes to mind. i think idealy if you could move the body side mount of the LCA inward, you would reduce the roll steer, and you could still keep an LCA angle that gives you good anti-squate properties. that in combination with shortening the torque arm, would really allow you to get out of the corner harder.

 

Dewey, It wouldn't change a thing. Side angle has no relation to toe on a solid axle car. The geometry of the LCA still lengthens as it come paralell and causes the outside wheel to turn outward.

RB, What kind of corner exit speed are you talking? 5-10 mph? You are not going to have traction (wheelhop) problems above that, or you had better change your shock dampen.

 

So than it would Make more sence to get the adjustable torque arm verses one thats non adjustable rite?

 

yes, but moving the forward mount inward minomizes that effect.

 

Adjustment on a torque arm only sets the pinion angle. He's talking about a shorter arm altogether. A shorter arm helps reduce squat and brake dive (to a certain degree) Then too short can cause excesive lift and start to alter chassis stability. Noone makes a torquearm that is too short (not a problem to worry about) I happen to like a certain degree of squat/dive braking into a corner, I'm old school.

 

One more thing. iput new eibachs in the back not up front yet. An the car does seem a bit looser. could be because of not puting the relocaton bracket on?

 

no, the brackets won't effect ride height at all.

 

No, sorry I have to respectfully disagree. I'll explain why.

By moving the front mounts inboard, you are in essence shorting the distance of the front mount point to the axle (same priciple as just running a shorter LCA) it will cause a greater change in travel geometry than if they are a paralell front to rear mount (like current application).
It will go more towards maximising the effect. The longer the LCA length front mount point to rear axle, the less effect it would have.

Edit: as a side note- for general trivia- Porsche has always engineered roll understeer into the *** heavy 911's to hold the rear inward in a corner.

 

point taken,

but with the arm angled like that, for every bit of vertical travel, the front/rear travel is reduced by the angel inside.

 

This only works on independant rear suspensions with a double control arm suspension (6 link). You have the bottom control rod straight, and the top control rod angled. And the bottom camber rods conecting perpendicular towards the pinion. What happens is when the suspension is compressed into a corner, the top angled arm will lengthen faster than the bottom arm and induce more positive rear caster. It won't work on a solid axle.
We are getting into very advanced setups (kind seen in open wheel cars) and do not apply to our basic 3rdgen solid axle suspensions- I wish I had those settings

 

Here's a setup I am strongly debating altering my vette to. Am checking on rules and acceptability in the different orginizations.
I can run coilovers with this setup.
http://www.guldstrand.com/5bar.htm

 

is roll oversteer inherently bad? will it actually reduce the cars road holding ability? Can the extra traction generated by the anti squat geometry overcome the disadvantages of roll oversteer (if there are disadvantages). Can you use shocks/springs/antiroll bars to tune the bad (roll oversteer) tendencies out? I'm looking at raising my car closer to stock ride height ( slightly lower ) but i have the relocateing brackets and figured i would still use them. I'm also considering a track link. What are your opinions?