Coilover Recommendation

[Pongo23]

Just telling you this is bad advice for a street car. When the car corners, the outside tire roll outwards and the camber will go positive. This is really bad for stability. At 0 camber you won't need to be cornering fast to make this happen. Shoot for -1.0 deg. For rear toe, you want 0.10-0.12 deg per side and 0 thrust angle.

The Mickeys will have some sway in cornering - they have a very soft sidwall. There's only so much you can do with setup and alignment to get that right.

Thanks for getting back to me; I really appreciate it. Not a suspension guru by any means but I think what you're saying makes sense for stock suspension with stock travel and stock changes in camber per inch of suspension height change. I think since I'm sticking with the 10" 400lb spring it won't be as bad as you suggest (I still run the factory perf pack sway bars).
My thinking is that in street driving while cornering the suspension will push the camber in the negative direction. I also requested them to try for slight positive camber (like +.4)so on launch it gets to actual 0 for maximum traction. Im not following how this will lead to instability in street driving conditions but will be happy to report how it works on the street. I'm thinking about it and weight transfer in a corner and I'm thinking the camber will trend negative versus positive but what do I know...im really a novice.

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[Bluemustang]

Thanks for getting back to me; I really appreciate it. Not a suspension guru by any means but I think what you're saying makes sense for stock suspension with stock travel and stock changes in camber per inch of suspension height change. I think since I'm sticking with the 10" 400lb spring it won't be as bad as you suggest (I still run the factory perf pack sway bars).
My thinking is that in street driving while cornering the suspension will push the camber in the negative direction. I also requested them to try for slight positive camber (like +.4)so on launch it gets to actual 0 for maximum traction. Im not following how this will lead to instability in street driving conditions but will be happy to report how it works on the street. I'm thinking about it and weight transfer in a corner and I'm thinking the camber will trend negative versus positive but what do I know...im really a novice.

You're not listening man. 0 rear camber is very bad unless solely for use at the drag strip. You will push into positive camber in corners. This leads to instability. I feel like I'm copying what Brian said above. Whoever gave you that advice is giving you bad advice, sorry to say. As said before -1 degree for the rear is the MINIMUM for a normal alignment.

 

[shogun32]

but what do I know...im really a novice

more dangerous words were never spoken. The problem with a naive understanding of theory is that reality often disagrees.
Theory is like jumping out of a 20 story window. It's all fabulous and you look good in freefall, until you reach ground level when reality makes a rude appearance.

Probably should pick up a book or two on chassis dynamics - there are many to choose from. For elite-level drag racing the guidelines may well be different, but the street != strip even if you just pussy-foot around when operating on the street.

Didn't we already have a video this week of a 'drag' car having a close encounter of the steel guardrail kind?

 

[Pongo23]

I just took a drive in a procharged s550 with -0.4 rear camber and stock suspension with eibach pros...will say it handled mighty fine even with deliberate hard cornering. This car runs mid 9's cutting 1.4 60 foots from foot braking. I didnt feel a hint of instability...i took a a very curvy on ramp at 80 mph...this car doesn't have sway bars and felt just fine guys.

 

[Pongo23]

So, do you want an answer or just other people to agree with you?

Not at all Brian...what you said makes perfect sense if i was going for +1 camber...running close to 0 or -.4 camber with the ridetechs isn't as bad as you made it out to be is all...i took ur advice and got a 10" 400 pound spring. Those other guys saying i should pickup a book, I hope they already did that. This isn't a road race car and if i was able to corner like that on the street with it feeling completely stable, it works. If I ever wanted to go road racing, I'd stay N/A....i just dont have the money to put my car on the road course...that wears shit out fast. I'd buy a miata or something along those lines for that. Not this 800+ rwhp turbo s550.

 

[shogun32]

Those other huys saying i should pickup a book. I hope they already did that.

My ignorance doesn't correlate with yours. Getting educated in a subject matter allows you to understand and evaluate assertions instead of relying on 'intuitive' conjecture and a single observation. Nobody was saying you're guaranteed to die in a ball of fire if you run positive camber on the street, and if you do more than just caress the throttle...

 

[Pongo23]

thing is its obvious some guys just post on here when they don't have much value to add...hyperco springs are readily available in many lengths and spring rates....ridetech offers it and you can literally buy them many places. Even pick em up at summit. Ridetech dampers are great and I have full confidence they could spec thr dampers to whatever I need. Id just need to have the car corner weighted...desired ride height measured and they'd re valve dampers...i just wanted an easy way out to still rock my street wheels without rub n get a decent camber setting when im hitting the strip with my drag pack. That's why I increased the eyelet and got a taller spring. I just wasn't 100% sure about the spring rates but after consulting here and other guys that have achieved what I am after, stiffer is the way to go with irs to keep it planted; especially since its the damper providing the compression in this case.

Just an example you can Google Hyperco 59100400 which is what i ordered.

My ignorance doesn't correlate with yours. Getting educated in a subject matter allows you to understand and evaluate assertions instead of relying on 'intuitive' conjecture and a single observation. Nobody was saying you're guaranteed to die in a ball of fire if you run positive camber on the street, and if you do more than just caress the throttle...

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