Looking to replace my springs and shocks. I am going with the Tokico Illumas,but i am not sure which springs to buy. Pros and Cons?? Which ones are the stiffest? I like the fact that racing beat sells a complete package with sway bars, but i havent heard any reviews on their springs

 

Their springs are good I have a set and want their sway bars. I bought mine used... there are alot of people selling brand new ones on this forum you should post a WTB in the right section. Again it depends on your application if you are just daily driving, then I would suggest racing beat springs... In my case .. I track the car and will in the future end up with coilovers
hope this helps
Edwin

 

sure does. THanks. by the way, i will track the car some, mainly so i can just get the most of my car legally. anyway, do you like the springs for the track?? Big improvement over stock i am sure.

 

Kris,

I would recommend you go ahead and get the Ground Control coilover kit to go with the Tokicos. That would give you the same setup that Art has run for years.

 

I have Tokicos and RB springs. I read an earlier thread about tire rubbing because of worn upper strut mounts. I replaced all of mine when I installed the springs and struts. No problems at all, handles like a dream. (mostly street ) PEACE!

 

I use HR with bilstien. On the track...the racing beat was too soft. Many friends use eibach so they can run wider tires and not eat the fender. Eibach doesnt drop as much as racing beat or HR. If I was to do it all over, I'd go tein coilover so I could adjust the height to my own needs.


https://www.rx7club.com/forum/showth...ht+racing+beat

I will add that the racing beat was too low for my wheel tire combo resulting in lots of tire biting. The HR springs are the same height but much stiffer resulting in less tire biting. If I had teins I would raise the front end a bit more and go with wider rims and tires

 

I'm running the Pettit Eibach kit with the stock touring shocks and I love it. I don't know how much this will help you though since you're upgrading shocks too. I'm planning on keeping these springs when I upgrade to Koni yellows in the spring.

 

'93-95 RX-7 springs

Stock 270-280 lbs front/190-200 lbs rear spring rates

Eibach
Pro 1" front/1" rear lower; 350 lbs front/255 lbs rear spring rates

Racing Beat
.75" front/1.5" rear lower; 260 lbs front/212 lbs rear spring rates

RS*R
Down .8" front/.6" rear lower; 349 lbs front/261 lbs rear spring rates
Race .4" front/.4" rear lower; 447 lbs front/391 lbs rear spring rates
Ti2000 0.8" front/0.6" rear lower; 349 lbs front/261 lbs rear spring rates

Suspension Techniques
1.25" front/1.25" rear lower; ? lbs front/? lbs rear spring rates

Tein
H-Tech .8" front/.7" rear lower; 391 lbs front/291 lbs rear spring rates
S-Tech 1.4" front/1.3" rear lower; 436 lbs front/324 lbs rear spring rates

Note that these numbers may not be very accurate.

My opinion...
I wouldn't consider Racing Beat springs an upgrade. Teins are much better "cheap" springs.
The best springs are probabely Eibach and RS*R. Many RX-7 people like the Suspension Techniques springs also but know one seems to know their spring rate.

I just received my RS*R Ti2000 springs I bought from turboimport.com for $244. I chose them because of the minimal ride drop, general purpose spring rate, and lifetime warranty. I would also expect them to be less likely to sag and rust and may be a little lighter than most for not much more cost. Does anyone have the weights of the stock springs to compare? It may be a little while before I get them put in though.

 

I have RSR Downsprings that I can give to you at a deal you can't refuse. I'd really like to get more guys standing behind this product. Their reputation preceeds them. PM me if you're interested.

rishie

 

The RS*R Race springs are perfect in my opinion, rather than getting a coilover set-up. Fine piece of craftmanship too

 

I agree that RB might not be the best springs out there but they do lower the car quite a bit which in turn lower the center of gravity which improves handling. Sounds like an upgrade to me. Of course I'm no suspension expert, just doing MY thing.

 

There is a pretty big improvement over stock... except for the fact that when I got them installed, I found out my rear shocks are pretty much done... so it didnt help me much. hahahah oh well personally I wanted to RSR race springs but I was concerned about a few thing... rough ride not being in that list.

 

Yes, you do get better handling when lowered with the RB springs. RB claims 7% higher spring rate which may also help performance (although comparing their listed spring rates to stock it doesn't look like it). But I was considering reliability and design too. I have heard of a couple of cases of sagging and the springs are designed to be too low for their spring rate meaning many people rub. This often has to do with worn shock mounts but I believe there should be more allowance here. I'd rather have OEM springs than RB springs considering everything. If someone wants to be very low and not increase ride harshness but doesn't have the money for coilovers then the RB springs may be worth a try. Otherwise better choices exist now.
The Tein's are about $150 a set on E-bay and have the increased spring rate for lowering and handling. The RS*R down springs for under $200 would be good if not wanting to go as low (like me). Coilovers (e.g. Tein, Ground Control) have come down in price a lot so they should be considered as well if going very low, very stiff, or needing adjustability. These options may not have existed or been too expensive when you bought your RB springs and it sounds like they have worked well for you. It's good to hear experiences with people that actually own them.

 

I also hear about the problems with rubbing. That's why I put in new upper strut mounts because as the mounts get older the springs will start to dig into the rubber. I had RB in my previous rex and they worked well for me. There is a fellow forum member that has them in his 93 R1 with he autox quite often and he seems very pleased with them. I had my previous rex for ten years, drove it all over Europe and Central America (military) and never had any problems with them. Good comprimise between handling and comfort, of course this is only my experience.

 

if you have the money go with tein coilovers they are fully adjustable and you can even adjust the shocks form inside the car ....very convenient

 

anyone with s-techs here measured the OD of them?

 

You beat me to the question!

 

PM Fatman0202

 

If you decide to go with the eibach pro-kit i am selling a set for $175. they go for $250 on ebay. I have a set on my fc right now and theyre great. Not to stiff, or too bouncy.

 

I got the S-Tech' springs, in my opinion (did not do any measuring) they feel same as stock springs exept that they are lower, that's about it.

 

I recall drop was 1", rates are 403 lb Front, 256 Lb rear, from
my notes.

These are linear, while Tien, and H&R are dual rate. Tein uses a slug hammer transition, with 2x rate change. others do this with more finesse.

 

Huh, this is the first i have ever heard of this. Could you explain this dual rate and sledge hammer effect you speek of. I was told and always read TEIN are linear.

 

http://performance-r.com/ProductImages/Tein/stech1.jpg

Tein implies they are linear, and just lists the "stiff rate". Most teins are actually dual rate, as shown in the pic.

When sitting, the tight wound part of the spring will be close to or at collapse. If collapsed, the other more widely spaced coils will define the hard rate (as listed). Hit a corner, and at the inside wheels, those collapsed coils now extend, and the net rate drops. If you go from 7 to 11 active coils, the rate drops 36% ( rate is proprtional to 1/N ) .

This step change in stiffness is more an auto-x issue (if any). Most racers prefer linear springs.

If the coil is also tapered, end to end, this adds progressive rate changes too.

-----------------------------

Mazdaspeed coilovers for the FD used just a few semi-tight coils that were not collapsed with just dead weight. When these opened up on a corner, the change was not dramatic .... nice design for comfort and sport. Rates in Kg/mm

Front: 5.0-7.3
Rear: 4.0-5.1

 

Do I have to mount new shocks to put on either rsr race or down springs?

 

I quess it depends if your current shocks are still good. I recently replace the springs in my 93 and all four shocks were bad. 63k on them. It just makes sense since everything is taken apart anyway.