Coilover Opinion
#1
Coilover Opinion
Hey All.
Just looking for peoples opinioins on the following Coilovers. My car is a Daily Driver, but is also used on 'spirited' street driving and circuit. Im not really interested in different spring rates. Also, the coilovers MUST be reliable, as I have a set of Cusco Zero-2E on at the moment, which have failed after 40,000km.
Regards,
Alex
Just looking for peoples opinioins on the following Coilovers. My car is a Daily Driver, but is also used on 'spirited' street driving and circuit. Im not really interested in different spring rates. Also, the coilovers MUST be reliable, as I have a set of Cusco Zero-2E on at the moment, which have failed after 40,000km.
- Stance AL+ Pro (9kg Front / 8kg Rear)
- Tein Monoflex (9kg Front / 7kg Rear)
- HKS Hypermax III Sport (10kg Front / 8kg Rear)
Regards,
Alex
Last edited by Tonba; Feb 17, 2009 at 02:36 PM.
#6
Former Sponsor
iTrader: (35)
Well it depends, on tire choice, driver preference, etc. BUT there are some guidelines to follow.
Here are some posts where i ranted on about the subject
The EVO has a multi-link rear suspension....10k/8k does not work very well if you track or especially if you auto-x the car.
The spring rates on off the shelf KW's are not very good either.
EDIT: I'm not trying to **** all over a bunch of different brands, but it's really basic suspension stuff that even these big companies don't get right, and it's frustrating. Maybe it's because they make parts for 50-100 different cars and don't take the time to get things right for each one, but this is like chapter 1 in suspension design. I don't think it's a "safety" thing or a different design philosphy to make the car understeer like poo because the STI has a rear strut based suspension with a motion ration close to 1, so the 10k/8k these companies use actually works for that car. Sorry for ranting.
- Andrew
Basically yes....you want a slightly stiffer rear spring than the front for the EVO 8 and 9. At the very least, even front and rear spring rates. Top auto-x setups are generally like 12k/16k, but i wouldn't do that for the street or track since that can be a handful.
The rear EVO spring is mounted inwards on the arm a little bit. Unlike the front strut which is pretty much mounted at the hub, a 5k spring rate in the rear does not mean a 5k rate at the wheel. Essentially the suspension arm is a moment arm....placing the spring inwards towards the pivot point means it needs to be stiffer. Sometimes you'll see people mention the "motion ratio." For the front EVO with the strut based suspennsion, it's close to 1. For the rear, it's somewhere between .6 to .9 (not gonna say exactly, but it's not too hard to measure).
Even Mitsubishi gave the stock car stiffer rates in the rear.
- Andrew
If you don't really care about performance, than it doesn't matter. But if you do, you're doing yourself and your car a disservice by getting backwards spring rates.
- Andrew
Here are some posts where i ranted on about the subject
Originally Posted by GTWorx.com
The spring rates on off the shelf KW's are not very good either.
EDIT: I'm not trying to **** all over a bunch of different brands, but it's really basic suspension stuff that even these big companies don't get right, and it's frustrating. Maybe it's because they make parts for 50-100 different cars and don't take the time to get things right for each one, but this is like chapter 1 in suspension design. I don't think it's a "safety" thing or a different design philosphy to make the car understeer like poo because the STI has a rear strut based suspension with a motion ration close to 1, so the 10k/8k these companies use actually works for that car. Sorry for ranting.
- Andrew
Originally Posted by GTWorx.com
The rear EVO spring is mounted inwards on the arm a little bit. Unlike the front strut which is pretty much mounted at the hub, a 5k spring rate in the rear does not mean a 5k rate at the wheel. Essentially the suspension arm is a moment arm....placing the spring inwards towards the pivot point means it needs to be stiffer. Sometimes you'll see people mention the "motion ratio." For the front EVO with the strut based suspennsion, it's close to 1. For the rear, it's somewhere between .6 to .9 (not gonna say exactly, but it's not too hard to measure).
Even Mitsubishi gave the stock car stiffer rates in the rear.
- Andrew
If you don't really care about performance, than it doesn't matter. But if you do, you're doing yourself and your car a disservice by getting backwards spring rates.
- Andrew
Last edited by GTWORX.com; Feb 17, 2009 at 04:41 PM.
#7
Its funny..
In Japan, and here is Australia.. Stiffer springs in the rear seems silly, as a majority of the weight is over the front wheels.. Makes the car too taily..
In saying that, ignore the spring rates, What do people actually think of the coilovers themselfs..
In Japan, and here is Australia.. Stiffer springs in the rear seems silly, as a majority of the weight is over the front wheels.. Makes the car too taily..
In saying that, ignore the spring rates, What do people actually think of the coilovers themselfs..
Trending Topics
#15
Evolved Member
iTrader: (8)
Join Date: Feb 2006
Location: NJ
Posts: 539
Likes: 0
Received 0 Likes
on
0 Posts
Here is a list of the spring rate's for the Evo 8. If you know of any more, or if you have a corraction, let me know and I will change it.
Thanks.
Evo Spring Rates
Name
Lowering Springs:
...................................Front.......... ........Rear.............drop
Eibach Pro-Kit:**....165lbs(2.9k)....140lbs(2.5k)....1.2f / 1.2r
Espelir ASD:............263lbs(4.7k)....319lbs(5.7k)....79 f / .79r
Espelir GT:..............308lbs(5.5k)....330lbs(5.9k)....1 .7f/ .98r
Ralliart:...................280lbs(5.0k)....307lbs (5.5k)....0.5f / 0.5r
RSR:**....................224lbs(4.0k)....280lbs(5 .0k)....1.4f / 1.4r
RSR Ti2000..............280lbs(5.0k)....336lbs(6.0k).. ..1.4f / 0.8r
Stock(USDM):..........180lbs(3.2k)....225lbs(4.0k) ......STOCK
Tanabe GP210:.......256lbs(4.6k)....319lbs(5.7k)....1.5f / 1.0r
Tein High Tech:**...196lbs(3.5k)....268lbs(4.8k)....1.4f / 0.3r
Tein S Tech:**........212lbs(3.8k)... 291lbs(5.1k)....2.0f / 0.9r
Coilovers:
APEXI PRO:..............560lbs(10.K).....560lbs(10.K)... .Adjustable
CUSCO Zero 1:........392lbs(7.0K).....280lbs(5.0k)....Adjusta ble
CUSCO Zero 2:........392lbs(7.0K).....280lbs(5.0k)....Adjusta ble
CUSCO Zero 2R:......392lbs(7.0K).....280lbs(5.0k)....Adjustab le
HKS Hypermax II:....392lbs(7.0k).....336lbs(6.0K)....Adjustable
HKS Hypermax RS....336lbs(6.0K).....280lbs(5.0k)....Adjustable
HKS Kansai Tarmac:.448lbs(8.0K).....448lbs(8.0K)....Adjustabl e
HKS Kansai Track:....896lbs(16.K).....784lbs(14.K)....Adjusta ble
HKS Performer:........392lbs(7.0k).....336lbs(6.0k)... .Adjustable
HKS PRO:.................672lbs(12.K).....672lbs(12.K) ....Adjustable
JIC FLT A2:...............560lbs(10.K).....504lbs(9.0K)... Adjustable
OHLINS FLAG L:.............ANy ..............Any ...............Adjustable
OHLINS R/T:.............250lbs(4.4k).....310lbs(5.5k)....Ad justable
Ralliart:....................336lbs(6.0K).....336l bs(6.0K)....Adjustable
Tein Basic:...............392lbs(7.0k).....336lbs(6.0K) ....Adjustable
Tein Flex:.................672lbs(12.K).....560lbs(10.K ).....Adjustable (Corrected 6/6/06)
Tein SS:...................392lbs(7.0k).....336lbs(6.0k )....Adjustable
Tein RA:...................672lbs(12.K).....504lbs(9,0K )....Adjustable
Tein HA:...................504lbs(9.0K).....392lbs(7.0K )....Adjustable
Tein HT:...................896lbs(16.K).....672lbs(12.K )....Adjustable
ZEAL:.......................336lbs(6.0K).....280lb s(5.0k)....Adjustable
ZEAL Also:...............448lbs(8.0k).....392lbs(7.0k). ...Adjustable
** = progressive rate
Edit: Edited Tein Flex adjustable as per info from chmodlf
Thanks.
Evo Spring Rates
Name
Lowering Springs:
...................................Front.......... ........Rear.............drop
Eibach Pro-Kit:**....165lbs(2.9k)....140lbs(2.5k)....1.2f / 1.2r
Espelir ASD:............263lbs(4.7k)....319lbs(5.7k)....79 f / .79r
Espelir GT:..............308lbs(5.5k)....330lbs(5.9k)....1 .7f/ .98r
Ralliart:...................280lbs(5.0k)....307lbs (5.5k)....0.5f / 0.5r
RSR:**....................224lbs(4.0k)....280lbs(5 .0k)....1.4f / 1.4r
RSR Ti2000..............280lbs(5.0k)....336lbs(6.0k).. ..1.4f / 0.8r
Stock(USDM):..........180lbs(3.2k)....225lbs(4.0k) ......STOCK
Tanabe GP210:.......256lbs(4.6k)....319lbs(5.7k)....1.5f / 1.0r
Tein High Tech:**...196lbs(3.5k)....268lbs(4.8k)....1.4f / 0.3r
Tein S Tech:**........212lbs(3.8k)... 291lbs(5.1k)....2.0f / 0.9r
Coilovers:
APEXI PRO:..............560lbs(10.K).....560lbs(10.K)... .Adjustable
CUSCO Zero 1:........392lbs(7.0K).....280lbs(5.0k)....Adjusta ble
CUSCO Zero 2:........392lbs(7.0K).....280lbs(5.0k)....Adjusta ble
CUSCO Zero 2R:......392lbs(7.0K).....280lbs(5.0k)....Adjustab le
HKS Hypermax II:....392lbs(7.0k).....336lbs(6.0K)....Adjustable
HKS Hypermax RS....336lbs(6.0K).....280lbs(5.0k)....Adjustable
HKS Kansai Tarmac:.448lbs(8.0K).....448lbs(8.0K)....Adjustabl e
HKS Kansai Track:....896lbs(16.K).....784lbs(14.K)....Adjusta ble
HKS Performer:........392lbs(7.0k).....336lbs(6.0k)... .Adjustable
HKS PRO:.................672lbs(12.K).....672lbs(12.K) ....Adjustable
JIC FLT A2:...............560lbs(10.K).....504lbs(9.0K)... Adjustable
OHLINS FLAG L:.............ANy ..............Any ...............Adjustable
OHLINS R/T:.............250lbs(4.4k).....310lbs(5.5k)....Ad justable
Ralliart:....................336lbs(6.0K).....336l bs(6.0K)....Adjustable
Tein Basic:...............392lbs(7.0k).....336lbs(6.0K) ....Adjustable
Tein Flex:.................672lbs(12.K).....560lbs(10.K ).....Adjustable (Corrected 6/6/06)
Tein SS:...................392lbs(7.0k).....336lbs(6.0k )....Adjustable
Tein RA:...................672lbs(12.K).....504lbs(9,0K )....Adjustable
Tein HA:...................504lbs(9.0K).....392lbs(7.0K )....Adjustable
Tein HT:...................896lbs(16.K).....672lbs(12.K )....Adjustable
ZEAL:.......................336lbs(6.0K).....280lb s(5.0k)....Adjustable
ZEAL Also:...............448lbs(8.0k).....392lbs(7.0k). ...Adjustable
** = progressive rate
Edit: Edited Tein Flex adjustable as per info from chmodlf
Last edited by 18bora; Feb 17, 2009 at 05:03 PM.