Im gonna chime in here a bit. I have spec suspension on my swapped e30. It works well all around. but by no means is it great. Spec suspension is off the shelf components that the organizers deemed would be used to try to keep the cost of building the car down.
If you want a non adjustable suspension, I would go with the Turner J-stock suspension. it is much stiffer than the spec suspension and the shocks/struts are custom valved to match the spring rates.
If you are looking at an adjustable set up (coilover), Ground control is a great company. Just be sure to get the proper shocks in the rear, or you will have to remove the shock from the car to adjust the rebound.
Of the higher end companies, Motion Control is making its mark as the new guy in town. The kits are expensive, but in this case I say you get what you pay for.
good luck in your decision.
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I'd recommend TCK DA.
Which coilover setup are you currently running? Posting the name will help others avoid the company.Leave a comment:
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Also, after you have dialed in the ride height to your liking, find someone with some scales and have it corner balanced. I wasn't so sure that it would make a difference, but after getting it on the track there is no doubt that it is a requirement from now on. Here's a good link that will explain how and why. Enjoy. http://grassrootsmotorsports.com/art...orner-weights/Leave a comment:
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Do it once and do it right: buy the highest quality shocks you can afford. If you're only looking at GC, then I would strongly encourage you to look at the Double Adjustable (DA) setup, and to also investigate TC Kline's suspensions.
There are other fantastic brands (JRZ, MCS), but the GC DA is a very good price/performance setup. You don't mention a budget, but unless you plan on doing competitive time trials/wheel to wheel racing, there's not much need for something beyond GC or TC Kline's DA kit.
Since your car is swapped (based on your avatar), SpecE30 is out of the question, so go proper coilover.
The damper is honestly the most important component as you've begun to realize. Having separate compression adjustment is amazing and makes a huge difference on your setup possibilities. That said, it's also another setting to screw up and make the car worse. The single adjustables are a great setup as well, and leaves a couple track days' worth of funds left over vs the DAs.
If you've been doing HPDEs, and you have a cheapo coilover kit now, get the GC or TCK Doubles (not the GC Advanced Designs unless your car is trailered) and be happy.
Hope that helps! I really liked my TCK DAs; for an HPDE car I think they are pretty much perfect.Leave a comment:
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Specifically the rear. I went through 3 iterations with the company and still the final set they sent was improperly matched spring and damper. I put a 700# gc linear coil in the rwar and have been messing with damping on the streets but theire poor customer service and lackluster quality really left a bad taste in my mouth and I want to cut my loses for something of quality construction and performance.
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As someone who has redone their suspension a few times, my suggestion is to figure out what your end goal is and build in that direction. If you think it'll become a Spec E30 car down the road then just get yourself a spec suspension. There's no sense in getting GC's if in a year or two you have to take them off and do something else.
I can say that I had all urethane bushings with IE3's and billie sports paired with Kmac camber plates for a couple years and they were fantastic. Being swapped I can't run a spec series so I ended up going for a stiffer setup, but the ride was pretty good all told and the car handled very well. Great setup for a car that sees both track and street.Leave a comment:
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What part? The nice thing about a conversion to 2 1/2" springs is thatI am not happy with the coils.
you can now change springs to whatever stiffness and height that you want.
The damper's still a damper, and can be anywhere from stock to quite aggressive
to match the spring. Adjustability is nice if you're changing springs or road/ track conditions.
For example, Seattle is faster with a softer setup, Portland can be run very stiff...
The upper mount is a bit harder- the GC all- metal adjustable mount's very nice indeed.
But it'll be noisy, relative to something soft. And they do take occasional maintenance.
...to get things started...
tLeave a comment:
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Opinion: Suspension Setup
Looking for your professional opinion on choosing the correct suspension for my use...
Background:
I do mostly HPDEs with it and some "spirited" driving on the weekends. As for the future, I think spec e30 would be something I might consider a long time down the road.. Also, I don't care at all abt street ride quality since I don't DD it.
Current Setup:
My e30 has all urethane bushings, eibach sway bars, and an off brand weld in coilover setup in it now and I am not happy with the coils.
Would you:
A). Run a conventional setup such as H&R race / IE3 with billy sports and a nice set of camber plates (something similar to the setup Turner sells http://www.turnermotorsport.com/p-41...nsion-kit.aspx)
B). Purchase the GC coilover setup with either single or double adjust. price really isn't a concern. They are quality products.
Trying to get an idea of what to run from guys who have "been there, done it"
Thanks in advance!
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