Hey I realized it's you driving the red 535 in that video from Carlstromring on the weekend! It seemed to be handling decently in the videos, was it better before you installed the rear sway bar?
Hey I realized it's you driving the red 535 in that video from Carlstromring on the weekend! It seemed to be handling decently in the videos, was it better before you installed the rear sway bar?
For higher spring rates at stock height you could look into the DIY coil-over setups, but spec your springs long enough to keep the stock ride height rather than lowering it. Some good info in this post about a cheaper coil over setup:
http://www.stanceworks.com/forums/showthread.php?t=40058
If your shocks are good you should really only need springs and the adjustable lower perches. For spring rates running stock shock absorbers you probably don't want to venture too much stiffer than the aftermarket performance springs, this thread has some info on that:
http://www.mye28.com/viewtopic.php?p=334308
I've got an extra E28 kicking around that I'd love to setup for rally cross so I've been thinking through these same problems.
Adam
I ran an autocross this weekend with the bigger sway bar on the soft setting and spring spacers in the front. There is less dive under braking and body roll feels more controlled. Here is some footage from last week's autocross where you can see the suspension movement: https://www.youtube.com/watch?v=1YQoPsFBe90
Handling is predictable and the car changes state slowly. I like it because I am learning how to drive quickly. There was a lot of stuff to hit at the tarmac rally so I wasn't pushing very hard.
I am running a rallycross next weekend. If the spacers keep the skid plate off the ground, I may be set for a while. Or I could keep dreaming about the full ground control kit.
Body roll looks well-controlled now. I think your front suspension bushings are shot though...either that or you need to switch to poly bushings.
How are the shocks ? If they have a lot of miles on them, new would make a big difference.
Don't focus on body roll, feel what the car is doing and what you need it to do.
Then use trial and error methods to make the car feel and perform for you.
It is a journey of sorts to try different things to see what you like and what the car likes.
Every driver likes a different feel, if there was just one magic setup anyone could be fast.
I am used to driving crap boxes, I ease them into a corner and get them over on the bump stops and keep them there. People approached me afterwards "Dude, you were on three wheels big time!" shrug fast time for my class.... I was just driving the wheels off it and not a kamakaze banzai run, very smooth and methodical hitting all my marks and using the whole track.
Shocks have a season of rallycross on them. Front bushings are a mix of new and old. Control arm bushings are new and poly. Thrust arms are probably next as I am still getting the e28 52mph shimmy.
Several months later, things are about the same. The rear bar has worked great. If I can get the fronts to dig in a bit, the rear comes around nicely with a little throttle. It looks a little like this
https://www.youtube.com/watch?v=Ywl1w8KP4S8
https://www.youtube.com/watch?v=XRB-1DJfilA
I found someone locally who is going to help me convert to coilover perches on my shocks. Once that is done, I will attempt a more balanced setup. In the mean time, I am having lots of fun.
Pay attention to bump stops as well. There are a LOT of options in the circle track world that slide onto the shock shaft. Having a nice controlled rate increase over that last inch of travel is much nicer from a dynamics standpoint than suddenly and violently running out of travel. And they're relatively cheap.
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