how much do you think they will be? i REALLY want them, but if they are too pricey, i guess i'll just stick to the cheaper ones.

check the front page of this thread.... :)

I think they are one of the cheapest springs you can buy....

really?? front page states 228 right?? i found some site called importdoctor and it is selling them for about $190. haha damn!! iono what i should do... still debaitn.g..

peter: you keeping stock struts?

naw, i am getting the tokico d-specs wit the cables:). hahah coilovers are too expensive:(. (I'm short on money because im getting the feed final drive:). yay!!!)

^^^ Lucky....

Mazdaspeed Springs
 

I spoke with Mazda Motorsports Competition and asked about spring rates. They didn't know but thought the springs were about 20% stiffer than stock. However, the interesting thing is that the spring rates for the springs and the Mazdaspeed coilovers are completely different. The coilovers are upto 90% stiffer so a 280 lb spring rate seems reasonable for the coilover. It looks like people just assumed that the spring rates for the springs would be the same as for the coilovers and that is what has caused the confusion.

http://www.finishlineperformance.com...key=RX08MS1027

Well, my nearly worthless information for the day comes from my local dealer parts department (whom I like and are generally informative, actually), who contacted Mazdaspeed about the springs. The answer he got back on the rates was "49 and 34", in some unintelligible unit of measure. Now, this is a stretch, but if you did 4.9kg/mm and 3.4kg/mm, you'd come out at 274lb/in and 190lb/in, which is very close to what has been said of these springs in the past (280/190).

As noted, this may be totally irrelevant info, but I'm going to prod them to find out more on the subject and see what they come up with. It may be that the 49 and 34 equate to roughly what speeddeamon measured on his spring tester in lb/in, in some strange unit of measure that I'm not familiar with. And if someone saw those numbers back in the day, they may have coverted them into kg/mm and ended up with the rates that have been taken as truth until now.

Anyway, we'll keep after it. And until then, we've got a whole bunch of Tein H-techs and S-techs in stock, just FYI :).

damn, no one has the Tanabe GF's yet....

I'm really considering them, but would like someone that has them to tell me how good they really are.

none of those OE type springs are stiff enough, you need coilovers to get decent rates

DPE... thanks for the info! keep us updated.

TeamRX8.... yeah this is true. I want to go with something MUCH MUCH stiffer. and none of the springs above are even remotly close. :(

Why cant someone just make a stiffer freakin spring. I mean come on, really now. do we really need all those springs that are vertually the same. :-/

I just need to start rolling pennys so I can afford the coil overs.

actually if you dont want body roll just get some stiff sways and a good spring

He has the Racing Beat bars along with Koni struts.....and in the quest for a "good spring"....it seems that most of the springs that we have looked at so far have similar spring rates...it is just ride height that differs (that and the actually measuring of spring rates rather than what the company advertises).

^^^ What he said.

speed: just get some S-Techs and call it a day. :D:

not untill I find someone that wants them "tested" first. I dont want to raise the car for now reason.

and honestly. even if the Teins are what they claim. I still dont think its enough to make it worth it. they are only a little stiffer then the sprints I have now.

...but then again, haven't most people suggested to you that your car is too low and that the driving issues you were having may be related to hitting the bump stops? Raising the car to Tein S-tech height may actually improve more from getting away from the bump stops.....

There's something you dont' see every day.

Yeah, the Teins are now selling a RX8 lift kit....:)

lol

I have the stiffest front bar made (1.25" OD x 0.25" wall) along with 575 lb/in (10.4 kg/mm) front springs and stiffest rear bar made (0.75" solid) with 325 lb/in rear springs (5.9 kg/mm) and still have a lot of front roll using street tires

http://calgecko.smugmug.com/photos/159336362-M.jpg

race tires need some serious springs, Speedsource ran 800 lb/in using DOT-R tires, race slicks will need much higher ...

Yes Kwescott... thats why I need to check for the the next time we go out.


Crazy Team. :)

Kay i got a question... if i'm getting S-Techs then what shocks should i go with? How do you decide on what shocks will work best with what springs? I've always wondered this so if anyone could spell it out for me i would greatly appreciate it...

Thanks in advanced..

we're not professional racers....if we were, we would go through the time of customizing valving in the struts for a specific type of racing...

...the option that we do have is going with a strut that have adjustment capability. This would allow you to "fine" tune your suspension to your needs. Koni and Tokico are a couple of examples of struts that have adjustment capabilities (based on the strut model you select).

....there doesn't seem to be a "best" option, except if you stick with a lowering spring that advertises similar spring rates to stock.

^^ to add to that. most people seem to like the Konis better.

mehhh I was meerly saying "to reduce"... its damn near impossible to have 0 body roll unless your car is on the ground with no wheels :lol2:

Springs & Shocks or Sways
 

I am considering moding my 8 to reduce some body roll. It is my daily driver, and not used for racing or Auto X. I live in a town with a lot of pot holes, bumps, and dips in roads.

I don't want to bottom my car out. I don't want to mess up my warranty. I know the whole spill about proving the mod caused the malfuntion etc...

I am seriously considering MS springs & shocks or Tein basics. Or just maybe MS sways. The ride on these roads around here are pretty rough on the 8. There is a lot of rattling going on. Hopefully when i get the greddy sp2, I won't hear the rattling. I am perfectly okay with a little rougher ride, but I don't know about the 8.

I know the drop with the MS springs is 20 mm, and Tein is adjustable. I know quite a bit from searching, and it sounds like there is no straight forward answer to what the best option is. To each his own. Sort of like the ever so popular question on this forum "What is the best exhaust?". I guess I just have to weigh out adv vs disadv.

Any recommendations are appreciated from people with these mods. thanks

Bump for a great find! thanks

pretty good read so far. kudos to you Speeddemon32 for compiling this and moreso for bring the MS units to question. it certainly does appear that aftermarket springs and struts are a waste of time for someone like me that detests form without function. i guess coilovers are in the future for my car.

thanks.

OK so I'm looking at buying a set of Swift springs. My question is: I think the drop is 0.8" is that a 1" drop? and is if not whats the drop for all fours come down to inch wise? This way I can go out to my car with a ruler and see how low its going to sit.
2004 AT og with 16" wheels now have 18"
Thanks,
-Gil

I dont have any info on Swift, but if you find it, please let me knwo, I will update it.


and your welcome diabolical, thanks for the compliments. its nice to see the hard work is helping people out. I just wish I had all this info in one place when I was looking. :) (thought I still would have gone with the Sprints. I just love the drop!)

Swift

price: (ebay it!) 170
drop: .8 all around
feel: it's like that magic anti-body roll spray that I give my tires!

^So 0.8" is 1"&1/2 right? and yeah they will not help with "anti-body roll" as I have vid the white Swift GT-34R drifting on the track out here in Vegas.
If you want to reduce the body roll get sway bars.

hello everyone, I have read through this thread and have become quite confused. I just found a great deal on new mazdaspeed springs on ebay, however after reading what some of you have said they are falsely advertised in spring rate? The actual ride height doesn't mean the world to me, I'm more so interested in getting a more aggressive spring rate. I have no interest in placebo effects, and am curious as to if anyone else with a set of mazdaspeed springs can verify the very low rates recorded a while ago by another member.

If they really aren't all that aggressive, I think I might just say screw it and get the Tein basics.

As you can see I have the full MS set-up. I can tell you from on track and off track experience there is a big difference. I ran my 8 at Road America in both stock form and moded form. Handling was night and day.

So do you think that maybe speeddemon just got a bum set of springs then? I'd be happy if that was the case. I donno I'm just trying to make a good decision. Ahhh I want these springs and only have like a day left before it expires at this price :(

They are definitely stiffer then stock but how stiff in terms of #'s I don't know. I got the MS set-up because they were meant to work together, they compliment each other nicely.

the stiffness you guys are feeling could be comming from the struts... ??? (it sounds to me that the people above have also replaced the struts.) When I replaced my springs I didnt notice any change. when I replaced my struts I felt a big difference in stiffness.... though I went with koni yellows.

I am more then willing to test anyones springs if they live in the area (you come here, no I am not interested in shipping springs back and forth).... :) ..... I live in So Cal.

When I spoke to Mazda Motorsports Development about them they said that Mazda has never released anything on the rates of the springs. and that they are advertised as lowering springs, not stiff springs.

from what I have seen (which you can all read about in this thread) all the lowering springs are close enough to stock rates to not make it worth buying it just for the rates. just buy the spring that has the drop you want.

If you want stiff spring rates, then you need to go with coil overs.


also a friend brought me his Vogland (spelling) springs. I have them sitting in the garage, I just need to test them out. I will post the results on this thread when I do it. I suspect they will be close to the factory rates as well....

interesting. Then I'm 100% going with coilovers. Thanks for all the input, i'll let someone else get those mazdaspeeds i saw on ebay then lol

added info for the Vogland springs

Espelir Spring rates from Endless Rotaries.

https://www.rx8club.com/showthread.p...hlight=espelir

thank you, I will add it now. :)

They're softer than stock?

yes. :)

Didn't Den say they were stiffer earlier in the thread?

... I dont know... he might have??? .... but there not. :-/ (these were his springs I tested)

it was either Placibo, or it was the stiff ass Konis making his car stiff. I know when
I installed my Konis it was a HUGE difference. but when I had the lowering springs with the stock struts it was really no different... now I know why.

when I raced Denwards car two months ago, I mentioned to him that his car felt just like mine.... now I know why, we both had Konis and we have similar springs. (meaning neither one of them was really all that stiff over the other)

I dont remember what sway bars he has, but none the less his car felt much like mine. it was nice!

Now I want to feel his car with the coil overs, I bet thats a fun ride now! (I dont remember what spring rates his springs are now, but I am more then sure they are WAY stiffer)

(by the way, thanks Denward for letting me race your car that day. that was very nice of you!)

as soon as i get my car back, your welcome to it again. im sorry its been out of commision :(

dont say sorry... :) its YOUR car. :) but thatnks anyways! I hope you get it back up and running soon. the dealer had my car for 3 weeks when they did my tranny.

Hi, today i installed the Mazdaspeed sport springs on my rx8, and i must say i am confused.:banghead: There is no noticable difference in the cars ride quality (supposed to be stiffer, but feels the same) and the car was supposed to be lowered 20 mm, but again there is no noticable difference (i know i should have mesaured before installing to comapre :banghead: ) I called the mazda dealer and he said i gotta give some time for it to settle down. Is this true?

Does it corner better? Yes it should settle. You should have it re-torqued after a week or so of driving

Make sure they torqued the suspension bolts down with it on the ground not in the air with no weight on the springs.

speeddemon32 are all those springs rates on pg 1 tested by you? I am looking into RB springs but I have a big problem trusting any manufacture about their spring rates. In fact if you look on RB's website they do not state their springs rates did the tech people at RB give you those exact rates?

You talk about coilovers being the way to go if you want stiff springs. Are there any coilover system that lets you choice our own spring rates. I know Ground Control has these systems for BMW's and VW's, but I haven't come across one for the RX8. If there isn't coilovers might disappoint you in the same way.

Keep on testing