93low240sx wrote:I just lowered my 93 240sx se with arospeed coilovers and i went 2.5 inches front and back and it looks perfect, doesnt rub and it handles really awesome! just make sure if you buy them- the springs for the back need a little piece, like a small metal plate bigger than your spring, b/c i had the problem of the little rubber piece that goes on top went into my spring. so we had to take it all apart again! but otherwise it lowered it perfect!!!!

Exar-Kun wrote:91nis240: they are for ride hieght, a shock alone will compress under the weight of the car, but the springs are used to hold X ammount of weight at a certain height, and compress if more weight is loaded on them, at a preset ammount of compression(how the springs are wound) without a shock, thecompression and rebound of the spring are uncontrolled, thus rendering the spring nearly useless.

seriously, the major job of a spring is ride height and weight to copression loading, but even that is modified by the shock, a stiff shock stops the spring from both compressing and rebounding.

sleeves are never as good as a true, made-for-purpose coilover unit. to me, sleeves serve no other purpose than to artifically compress a spring by using a threaded mounting system. I would think its much better to get a spring that will give you the ride height and tension(rate of compression under loads, rated on the springs of any good mfr.) you wnat/need than compressing a spring atificcaly thusly modifying its characteristics, allong with the shock(reducing or lengthening its stroke)some sleeve, such as ground controll can be used for street/show purposes fine, but like I said, I';d rather get a nice adjustable shock and some good springs, and not waste my money, for the above reasons.

all in all, Im getting a set of Apex-I n-1 coil overs, possible GP motorsports or TEIN, havent decided...ZEAL makes a nice setup, too.

-chet

C-Kwik wrote:Shocks slow down rebound and compression. It does not stop it. As far as rendering a spring useless, it does not, but does create a very dangerous oscillation (bouncing) when driving and affects all dynamics of a car. I've driven cars with shocks blown so bad that the shaft had no resistance at all. Bouncing is not fun when trying to drive fast.exactly.... making it, in my opinion useless except for ride height controll. my point exactly. ignoring the enrgy transfer to the chassis and eventual stopping of the rebound, mind you.

A complete adjustable rideheight coilover system looks better, but does not mean it performs better. Most out there are very good and look a lot better then any sleeve system. That's not to say Sleeve systems are great either. It depends on how well it's put together. Most poorly put together sleeve systems decrease the amount of suspension travel. thats what I was refering to earlier., where you top mount and bottom must be used to compress the spring artificially, etc.

This is bad. Particularly in the front suspension of the 240sx. It has little travel to begin with and very little room above the lower spring perch. Removing the existing perch would help, but probably a lot more trouble than it's worth when there are systems available. But honestly, you don't need that much adjustment anyways. You can adjust rideheight by choosing a spring properly. I would limit theuse of the adjustable perches for cornerweighting if I used a sleeve system. Also what I said good to know we think allong similar lines.

A coilover system does not artificially compress a spring. All you do is change the location of the bottom of the spring, thus changing how high the car sits. The spring itself still compresses to the the same height under the weight of the car.yes, but the cheap ones do, see above. I was not refering to real coil-overs, or good sleeve systems.

Uhh? As I said, the Ground Control sleeves are actually built for racing. Not just a street/show set-up. It's actually probably made to sit on top of the spring perch and you probably do need a stiff spring to avoid bottoming out, so that's probably why it is marked for race-only. That's just my speculation though. And for show, I'd imagine you'ld want something that looks a lot cleaner than a sleeve system.Yes, ground controll uses very hard/high tension springs. also, it requires some cutting to make work correctly for the upper pillow ball mounts. I was reffering to "show" as the people who like to slam their cars more than any spring kit will, IE 3" or more like someone did....*sigh*

Lastly, 91nis240, As far as your rear set-up, if there is only one inch of compression left, the kit you used is probably not very good. I'm speculating that the sleeve itself is rather long and the spring is relatively short. The 240sx Rear spring/shock assembly is quite long. Just took a quick look at mine and there is enough space between the coils so that if I put enough weight on the back, the wheels would bottom out inside the wheelwell before the spring ever did. I would stay away from just a stiffer spring to solve your problem. It can affect your handling adversely. I've never heard of Arospeed doing any actual race testing on their parts, so it's probably more of a cosmetic kit. If the situation on your car is as I describe it, the proper fix would be to cut down the sleeve and use a longer spring. If it uses a standard size, you can probably find a replacement spring through Eibach. But if you don't know what you are doing with spring rates and such, I recommend buying a prefabbed kit. A lot of complete systems are not too pricey, considering what it costs for new shocks, springs, pillowball mount/camber plates (if desired), etc.

91nis240 wrote:dont even buddy, tell me not to comment b/c im not educated enough on the subject. And maybe i would of never told you "come on man" if you'd a explained a springs purpose as you did in your most recent post insted of the way you did in your one prior post.

KS_Honda_Killer wrote:I've got a set of Eibacs with KYB AGX struts already installed for sale for $500.00. Check out my post in the general chat forum.

Exar-Kun wrote::withstup

also, a good coilover (true coilover, ala TEIN, JIC, ZEAL< etc) system will work better than a sleeve system, for these reasons:1. more adjustability, without compression of the spring, allong with 12+ ways of adjustment of dampening force to regulate the springs, and most come with adjustble camber, and pillow ball mounts. this allows folr better adjustability to your driving/track conditions/etc.2. better materials. usually, the materials used to make the systems like those above are usually of a higher grade(IE the springs are form alluminum alloys for lighteness and strength.)3. usually engineered better. most kits from Cusco, etc are made from Gt300 races and things, thusly may be better engineered than a "universal" sleeve kit for a car, designed for both slammers and sports handling enthusiests(sp?)

I would rather get a good set of springs and adjustable shocks(IE TEIN srpings/NISMO springs and a set of AGX shocks) than a sleeve system, but thats my opinion.

91nis240: my appologies, but seriously, lay off the criticism, I was short with you, I appologise, now hopefully I can teach you something, as well as C-kwik.

-chet