What about the Tein RA, for track use?

 

Pss9.

 

Would a 12k/14k rate on a set of tein flex's cause to many issues like possibly destroying the coilover ? 12k is the stock rate up front but 10k rear. I was hoping to move these to a more aggressive rate to improve them. Even though they they are tein flexs they are soooo much better than lowering springs. Also note that I got these for a great price and I am a very budget minded and required person. I plan to upgrade in the future but these must work for me for now.

Thanks for any help!

 

The narrow valving of the Tein flex would make the handling less than optimal and may also cause premature wear. IIRC they can accept a +2/-2 spring rate change so you can run a 10k/12k front to rear and have a somewhat decent set up or do a revalve if you want to run more than 12k in the rear. However if you are making the investment of having them revalved I would suggest doing so for a more competitive 12k/16k front to rear.

 

Higher spring rate should go in the front on an Evo due to the rear suspension geometry.

l8r)

 

I think there are many here who will disagree with you, and some that will say you're flat out wrong. What you have said is different than how the car comes from the factory, and is different than every car I know that has ever won a national autocross title. Also different than many top road race and time attack EVOs I know. Please feel free to share how you came to this conclusion. . .

 

put me down in the "saying you're flat out wrong" category.

12k/16k sounds good to me.

 

I say if you are running 12k+ rates I doubt you need to worry about the damper as you most certainly be riding on spring only 99% of the time.

 

Huh? With spring rates that high the most important thing to worry about is having a properly valved damper.

 

I think he knows that, but just got it backwards.




um...what?

d

 

Some of the only factory coilover made in Japan with higher rear rates over 10k are Quantum Racing Suspension coilover and I've been seeing some used sets for sale. They are out of my budget new at $4k or so. They are regarded highly and
I hear than in Japan they are about the best you can buy. I know they sarted out in F1 and now they are used in British F3 and Formula Nippon. I don't know much else about them though or how to read all the graphs below, if you can let me know what you think






More graphs here
http://www.qrs-j.com/technology/piston.html

 

Those don't look too bad. Their example plots are similar to what you would expect from a proven manufacturer like Koni or Ohlins. Of course you'd want to get them dyno'd yourself to see if they actually match what is claimed.

They don't look to be externally adjustedable. You probably just shim them for the forces you want and go.

d

EDIT: I can't read japanese. Some of their plots looks really crappy. It might be because they are comparing to another brand, but I'm not sure. For every evo application that I've ever seen, you want the highly digressive force curve.

 

Ya, being able to reading Japanese would really help. Thanks for the insight. The ones I've seen are T5-RS, which are adjustable here are some general pics.




Sport are F:12k R:12
SuperSport F:14 R:16

Here are some pics of there highend stuff, T3-CR which I'm sure are custom build to whatever specs.

 

They look much better than a lot of other JDM coilovers at least. That's all I can really say from over here.

- Andrew

 

Thanks alot for your responses I'm actually surprised I didnt get a ton of flak from people on higher end coil overs. Right now i have $575 in these with the EDFC and want them to just get me mildly more competitive not really expecting the best.