91DropTopTA

Does anyone have any suggestions about new springs and shocks/struts for a convertible? My 91 TA vert is in bad need of some new suspension parts, but my budjet is tight.

gmgod

Moog 5665/5662, kyb gr-2/ gas-adjust.

George

The car will handle better with a bit of rake on it like the Prokit has. If I'm not mistaken the Sportlines give the car less rake.

TransAm12sec

My 82 has the pro kit, and with the lg4, the tires won't spin from a stop on the street. But, on the track, if I brake torque it to 1300 rpm after a 3-4 second burnout, the tires will spin for just above a second. This is with 3.73 rear gears, and LG4, and 245/50 Indy 500s.

91DropTopTA

I'm thinking that the Moog products may be the way to go. Does anyone know if I can get a package deal on Moog products anywhere? Like a front end rebuild kit?

91formulaSS

Spohn sells a Moog front end kit, it's $342 http://www.spohn.net/product.cfm?productid=1374 he sells the springs too. You can get the parts cheaper from Napa, there is a thread on here w/ the part #, just do a search.

Steve89GTA

I have the pro-kit and I think the rear could be a little stiffer ... I can imagine with the sport lines...

vejatabul

ok great info but................eibach sportline and prokit are PROGRESSIVE!!!!!!! look at there web site!
http://eibach.com/cgi-bin/htmlos.exe...69356300014622
http://eibach.com/cgi-bin/htmlos.exe...53505000014622
do you guys not know the deffinition of linear?
linear means its the same rate throuout the springs travel.
progressive means it raises the rate of the spring the more it compresses.
come on guys you gotta know this stuff before you start typing!

25THRSS

Didn't you read what I posted?

vejatabul

what? that you gave the def. for linear, except what you discribed was progressive?
on a progressive spring, it gets stiffer the more they compress. it would be less likly to bottom out.
a linear has the same rate, it dosnt get stiffer.it would be more likly to bottom out.

91Z28-350

Wow, thanks, I had no idea the Eibachs had some progressive rates! That's just absolutely astounding! Holy Cow!

FYI, the following information (from the first post) came from Eibach tech support. I know, because I pointed 25THRSS to the contact and gave him the info on the Pro-Kit.

25THRSS

This makes no sense at all. Take the eibach sport lines for example. If you have a progressive spring that starts out at 80 pounds and stiffens up to 137 pounds. It's going to compress a lot more than a spring that has 130 or so pounds throughout the entire length. My ground control adjustable kit has linear 650 front and linear 150 rear springs. I guarantee you mine will not compress or "bottom out" anywhere near as much as a comparable progressive kit.

miacamaro305

i have st springs 610 front 97-190 rear

tf0r1

eeek, and I thought I was confused before I read all this.. So the pro kit bottoms out alot? Is that the deal??? why not just go with the stock moogs? Im at the point where Im ready to order springs, and I was leaning towards the pro kit...My springs are so bad, Id be better off with the springs out of a Bic Pen... Keeping all the lowering consequences and additional costs in mind, now I not sure that this is for me... sheesh

25THRSS

no, the sport lines will bottom out much more than the pro kit.

miacamaro305

wat exactly do u guys mean by bottoms out?because if u dont cut or replace the bump stops with shother ones then u found ur problem i have smaller bump stups all around and no bottom out

91formulaSS

All you have to do is look at the front springs on the Pro-Kit, each coil is evenly spaced throughout it's entire length. This means it's linear Believe your eyes before what you read on a web-site. And know what YOUR talking about before YOU start typing.

86irocterror

hey guys. i have the sportlines on my iroc. i thought the sportlines would be stiffer then the pro kit, since the sports are a much larger drop. but the rates say other wise........anyone know why this is. the sportlines drop our cars ALOT. i would think eibach would make them stiffer then the pro kit. but with my other mods to my suspension my front tires are only about 1/8 of an inch away from rubbing my inner fenders and they dont rub when i drive it. big bumps yes but not normal bumps.

CrazyHawaiian

It says on the first post:

LilJayV10

iTrader: (5)

This thread is outstanding. I rebuilt my suspension this summer using bilsteins and sportlines along with just about everything spohn sells. The height is perfect, the car looks great. After I did the rebuild I had an oversteer problem that about killed me, when you'd get in a turn, right when the car should sit down and grab, the rearend would snap out. Turns out the car was hitting the bump stops when the car was squatting down and kicking the rear out. I cut the bump stops almost in half and that took care of the oversteer but damn the car bottoms out all the time, and when it does it's violent, it sounds like the car is going to come apart.

So for my application the rear springs are way to soft. Just driving around you can feel the rear is soft.

Is the general consensus that sportlines are ok in the front but to soft in the rear. I have reread this thread several times. I am trying to get a really good understanding of suspensions.

I have HD's in the front and sports in the back, only difference I have read about the sports is they are for lowered cars and the piston inside is lower so you don't blow the bottom of the shock out. I am also looking at getting the spohn upper strut mounts for the front so the strut can extend fully.

Should I swap in the pro kit or can I get springs made for the rear that would be better for suited for my combonation.

laiky

What does it take to get people to give up on the eibach springs for these cars?? They are nothing but a fashion statement. Look at what all the racers/auto crossers use, i don't recall eibach mentioned.

Personally, if i had to do it all over, knowing what i know now. I would just buy the guldstrand slalom coils (cut moogs) for what ever price they ask and be done with it. Its worth the hundred extra bucks to not have to remove the fronts several times.

LilJayV10

iTrader: (5)

So do these springs have the right spring rate, ride height? How do the rates compare to the eibachs?

laiky

They are about 750 in the front, i like the ride height, can't tell you the drop though, i put them in my brothers 84 back arount 1990. I still like them. You may want to trim the bumpstops since they are pretty low. The rears are a little high for my taste but you can trim those eisily to your liking, some where around 175. Go to guldstrand.com and give them a call. I'm sure there are others that are good but Eibach aren't.

LilJayV10

iTrader: (5)

So are they stock springs just cut?

laiky

Stock is kind of vague, i have heard that they are just moog or TRW springs that are trimmed, which moogs ?? don't know. Moog does make some really stiff front springs for this car, not sure if its a "stock" rate or if its just the trimming that bumps the rate.

When i built my car, i bought eibachs based on the reviews here, 240 bucks and they stunk. I replaced them with moogs 566x something. Stock ride height stinks now. I have been planning on cutting them for some time but i haven't driven the car much and have been busy with other stuff. My brothers camaro however is how i want mine, in this case i wasted the money on the eibach, then the moogs, now i have a full days worth of work to get it right, i wish i just bought the guldstrand slalom set like i got my brother over a decade ago.

z 28 jari

iTrader: (1)

How the rears works,any bottoming issues?

laiky

never in my experience but you must use an appropriate strut/shock. Koni/bilstein/tokico illumina (not hp).

TunedPort 335

Wow... no wonder my car rides so stiff with the Pro-kit

LilJayV10

iTrader: (5)

I looked at the gulstrand(sp?)website. I haven't had a chance to call them or email them yet. I am definately looking for a stiffer spring, especially in the rear. What do the auto-x guys use? Do most of them use coil overs or what? Thanks.

tf0r1

Yeah this is one cool as hell thread...

But in all honesty, I went with the moogs Iroc version of the springs and Im extremely happy with that decision.

I could not imagine having to tear it all (my suspension) down again and again and again...I do admitt those low riders look cool, but but for me, bottoming out on every speed bump/ pot hole was never an option..And those moog springs allow me to hug the hair pins better than I ever could, and I am the original owner... With that said, I say do it once, do it right and move on.....

LilJayV10

iTrader: (5)

Yeah I am not real happy about it but thats how you learn I guess. It's like everything else, you can't have everything. I will gladly give up some ride height for better handling. All the money I have in the suspension and I am very unhappy with it.

WillSpeedy

So is anyone happy with the pro kit? That is the one I was looking at getting in the near future.

LilJayV10

iTrader: (5)

Anyone know anything about the B & G springs that spohn sells on his site? I have seen in previous posts that he recomends the pro kit over the sportline kit. Now I know why. I was interested in the Tokicko springs, their rates are a lot higher in the rears but softer in the front. I emailed guldstrand asking them about their slalom springs but haven't heard back.

Camaroz1985

iTrader: (2)

In case any one was wondering or interested I just found out from a dealer that Vogtland Sport Spring rates are:

"Front: 336 - 628 lb/in. The spring mostly works in the 628 range.

Rear: 183 - 228 lb/in."

and they lower the car by 30mm F and R (about 1.2 in.). These springs are also supposedly made of a "special alloy" which is 30% lighter than similar springs.

z 28 jari

iTrader: (1)

Are those Vogtland springs sold only as a "set" or can I buy only rear springs?(because I need to replase those WAY TOO SOFT eibach rear springs)

obeymybird

iTrader: (4)

i have the pro kit biggest waste of money i spent i have been looking for something better well v6 springs would be better then those crappers! i email eibach after i got them installed thats how bad these things made my car handle they said that no one has ever replied to them about poor handling issues. i said it gave me a softer ride at first i thought this is cool no more harsh bumps till i threw it hard in to some turns like normal and the car pushed so hard i thought it was going to roll over. eibach said that makes no sense because the spring rates are higher then the ws6 springs but after looking into this for a while i find that there was like 7 different ws6 springs and so from 1-7 higher the number the stiffer the spring my car had level 5 so i know the eibachs are not even close to performance of the ws6 springs.

z 28 jari

iTrader: (1)

[QUOTE=obeymybird;3262556]they said that no one has ever replied to them about poor handling issues. QUOTE]
Yeah right.It was April 2001 when I give they tech support e-mail at pro-kit rearsuspension bottoming issues.How they say themselves: Eibach makes the finest performance springs in the world. Period.

-Jari-

91_5.7_TPI

iTrader: (2)

For whatever it's worth, using the bump stops to stop suspension travel isn't a good idea. It can cause snap over-steer on the rear. When the car hits the bump stops, it's pretty much like being on solid springs. Stops movement. Bad in general.
I like my Eibachs. I had the F41 springs, and I thought the Eibachs were an improvement over the F41s. They are much better with the KONIs. I don't know, but I am thinking about trying out a set of WS6 springs I have from a parts car. I am thinking about having a custom set made for my car along with some weight jacks.

LilJayV10

iTrader: (5)

You are right. Thats how my car was and it was scary. I trimmed my bump stops down and it doesn't snap steer, but it bottoms out all the time.

BMmonteSS

No need to get "custom" springs made, every spring rate and length you could ever think of is already made for the circle track guys. The first link here is for the rear of a street stock car and will drop right into an F-body. The second link is for front springs. Browse around and you'll see there are a ton of different springs in every concievable rate from 400 to 1400 lb/in. Keep in mind you may have to trim these springs to get your desired ride height. If you can get a rough estimate of your front and rear weights you can calculate what length and rate you need and take the gueswork out of picking springs. Of course a set of weight jacks pretty much take all the guess work out of it.

http://www.speedwaymotors.com/p/5878...1andquot;.html

http://www.speedwaymotors.com/p/163,...5andquot;.html

I have a set of weight jacks in my car, so I just grab factory moog springs and cut them to my desired rate then use the jacks to set my ride height. You can't beat $25 a spring for the moogs, even at the $45 they want for the "Racing" springs it's still not a bad deal considering how much the craptastic eibachs are.

soultron

iTrader: (2)

What weight jack set do you run?

91_5.7_TPI

iTrader: (2)

Yeah, I didn't really mean "custom". I just meant a not pre-chosen off the shelf kit. I'm not gonna do it til after my engine swap, though. Don't wanna get a set for the current drivetrain and have to do it again later. Thanks for the links, BTW.

Dwest

Hi wondering if you might be able to help , in installing eibach pro kit springs with Koni yellow inserts on my 92 mr2 turbo and heard about cutting the bump stops but can find any info on what size they should be , I saw you mentioned triming them and reshaping if you wouldn't mind can you telling me what size to make them for the pro kit springs would be good and what to do with the reshaping you'd really be helping me out.