Do camber plates create drop or just increase travel?

[Hellabad]

i thought it was 14.5 deg, from memory.

21 from my memory on my 2002 WRX wagon?? There has been water under the bridge......

the software analysis i ran showed that even with only 1-2 inches of lowering, the linear camber curve became very unlinear and poor.

anyway, i know in theory there is an improvement possible messing with the camber curves on an impreza, but maybe in pratice you are right. however i hope not, i spent the last year of my bac redesigning the knuckle of the impreza to improve both the camber curve and the roll center (the other thing that goes to shit with lowering) for a circuit racing STi. the result was quite beautiful (fully modular, aluminium knuckle). however, it has only been fitted to the car and is yet to be track tested.

Thats how I do it. Just mess with it until it goes fast. I will double check my wrx degrees tomorrow.

jay

[guibo09]

here is where i got my info

http://ken-gilbert.com/wrx/STi_Manual/05. CHASSIS/01. FRONT SUSPENSION/01. General Description.pdf

also when i measured it on a chassis jig, i got about that too.

[Kingb]

Damn I feel like this is the thread that I have contributed the most and all I did was add a pic an info that I got from Jay and it just took off like a rocket with Jay included.

[Lof8]

so, with the coilover conversion and gc camber plates, I would be able to go 24mm lower in the front and retain my same suspension travel to the bump stops, right?

Do the rears have suspension travel issues as well? or are the fronts the main concern? I ask because I need to drop the rear of my early bodied car lower to tuck a lil tire.

[Hellabad]

so, with the coilover conversion and gc camber plates, I would be able to go 24mm lower in the front and retain my same suspension travel to the bump stops, right?

Bingo

Do the rears have suspension travel issues as well?

yes, but there is MUCH more room in the rear. This makes it easier to lower correctly, plus more forgiving after you are done.

or are the fronts the main concern?

yes, just because there is not as much room..

I ask because I need to drop the rear of my early bodied car lower to tuck a lil tire.

Lower the rear until you get to about 2.2 negative camber, and then you pretty much should think about stopping. So you are limiting the height of the rear from the camber actually, rather than bottoming out. That is because in the rear the ride height and the camber are married to each other.

(you can divorce them)

Jay

[Hellabad]

The front strut angle on a WRX is like 21 deg

i thought it was 14.5 deg, from memory.

I was wrong. Guibo was right. My memory about WRX geometry was not as good as I remembered, and when I checked my notes I have 14.21 and not 21.0

e30 content: 23.43 degrees with GC camber plates

Jay

[guibo09]

hey jay, does GC offer a divorce solution? seams like IE is alone with their product (eccentric bushings are a poor solution, i would think).

[Stephen]

Bump from the dead.. Anyone have any pictures of the drop with the GC plates?

Considering it as an alternative to cutting a dead coil

[Hellabad]

Bump from the dead.. Anyone have any pictures of the drop with the GC plates?

I took off the license plate too. This is photoshopped 12mm lower in front.

the 12 mm is how much the spring pad moves upward, the suspension travel stays the same in this example.

Jay

[bwh13]

If I understand all this information correctly, by using the shorter camber plates on the same spring, travel would increase by the amount the camber plates are shorter than the stock upper mount?

[E30SPDFRK]

You understand incorrectly. Putting camber plates on the same spring would lower the car the distance they are shorter. The way Camber plates increase travel is if you put them on a car with coilovers. You would raise the lower pertch of the spring the height of the difference between stock and plates. This retains the same height you had but gives you that much more travel.

Camber plates on a car with springs will not increase travel, only lower the car.

[Philo]

/\ Yup. They basically become drop hats with camber/caster adjustment for $300.

[bwh13]

OK thanks, that makes more sense...