Notices
Evo Tires / Wheels / Brakes / Suspension Discuss everything that helps make your car start and stop to the best of it's abilities.

Choosing coilover spring rates for your EVO

Thread Tools
 
Search this Thread
 
Old Feb 28, 2016, 07:20 AM
  #391  
Evolved Member
iTrader: (29)
 
kyoo's Avatar
 
Join Date: May 2006
Location: US
Posts: 10,542
Received 233 Likes on 209 Posts
shouldn't.. I can adjust the preload separately
Old Feb 28, 2016, 09:49 AM
  #392  
Evolved Member
iTrader: (29)
 
kyoo's Avatar
 
Join Date: May 2006
Location: US
Posts: 10,542
Received 233 Likes on 209 Posts
so I'll just be losing travel? anyone running 7" springs on their ohlins?

also, that assumes the number of coils/the springs total compressible area is the same - it loses travel by the length of "open area" it loses, not by the spring itself being shorter, correct? extreme example being a spring with just one coil. also, would think it's technically better for a damper in the case that it'll be less likely to bottom out, since max compressible area is less

Last edited by kyoo; Feb 28, 2016 at 02:13 PM.
Old Feb 28, 2016, 05:47 PM
  #393  
Evolved Member
iTrader: (29)
 
kyoo's Avatar
 
Join Date: May 2006
Location: US
Posts: 10,542
Received 233 Likes on 209 Posts
Originally Posted by kyoo
so I'll just be losing travel? anyone running 7" springs on their ohlins?

also, that assumes the number of coils/the springs total compressible area is the same - it loses travel by the length of "open area" it loses, not by the spring itself being shorter, correct? extreme example being a spring with just one coil. also, would think it's technically better for a damper in the case that it'll be less likely to bottom out, since max compressible area is less
just wanted to update this -- had a good chat with GTWorx, and they said shortening the spring wouldn't raise the car, and that i'm about as extended as i can be on the bottoms. they did say that i can add as much preload as there is corner weight, which makes sense. i've got about 1k lbs on each of the fronts, so if i add about an inch of preload on my front springs @ 450lbs (8k), i'll still be well within good range even when the car is full straight accelerating.
Old Oct 23, 2017, 06:10 AM
  #394  
Newbie
 
gerikivan's Avatar
 
Join Date: Jun 2016
Location: Glendale, CA
Posts: 52
Received 5 Likes on 5 Posts
hi can you guys help on what spring rate for my evo x i do canyon runs and race track.. on my s2000 i was running hks iv sp which is 16kf/16kr as a daily and i dont mind riding a stiff car.. on my evo x i already have hotchkis fsb and rsb, caster kit, rck, engine mounts, rear diff bushings, driveshaft bushings, and slowly working on completing my bushing ons the suspension..since my ayc took a dump, ive decided to ditch my ayc and went with the evo 9 mechanical rear diff.. one my friend recommend to run 10kf/10kr and he only has a rear sway bar... since i have front and back sway bar mine would be different then, so far after learning alot on this thread im leaning on getting a 10f/12r or should i go with 12f/14r? im mostly going to run on street tire.. in the future once i get my wing and front splitter would do i need to change my spring rate again to a stiffer or soft? thx guys
Old Oct 23, 2017, 06:21 AM
  #395  
EvoM Staff Alumni
iTrader: (3)
 
MinusPrevious's Avatar
 
Join Date: May 2008
Location: So.Cal
Posts: 7,704
Received 1,384 Likes on 1,317 Posts
My concern about running a high front rate is that you have uprated the FSB. The general rule of thump is:

Its either one or other / Stiff springs w/soft sways or Soft sways w/stiff springs (cant run both effectively)

I wouldnt suggest any higher rate than a 10K / 12K setup. Even at those rates, their will be a likely increase in understeer & the chance of floating the inside front tire on hard, fast corners

I would have suggested to leave the FSB at the stock setting & work only w/a more track oriented spring rate

(BTW, you should have posted in the X forum)
The following users liked this post:
gerikivan (Oct 23, 2017)
Old Oct 23, 2017, 07:36 AM
  #396  
EvoM Guru
iTrader: (1)
 
LetsGetThisDone's Avatar
 
Join Date: Oct 2013
Location: Las Vegas
Posts: 15,753
Received 1,543 Likes on 1,322 Posts
Evo X doesn't need the higher rear rate. 10/10 works well.

Last edited by MinusPrevious; Oct 23, 2017 at 07:49 AM.
The following users liked this post:
gerikivan (Oct 23, 2017)
Old Oct 23, 2017, 07:49 AM
  #397  
EvoM Staff Alumni
iTrader: (3)
 
MinusPrevious's Avatar
 
Join Date: May 2008
Location: So.Cal
Posts: 7,704
Received 1,384 Likes on 1,317 Posts
I see why, Thanks Sean.


Old Oct 23, 2017, 08:14 AM
  #398  
Newbie
 
gerikivan's Avatar
 
Join Date: Jun 2016
Location: Glendale, CA
Posts: 52
Received 5 Likes on 5 Posts
thx for the help guys.. i figured id post in here since i ditch my ayc and this thread is more specific details in here
The following users liked this post:
MinusPrevious (Oct 23, 2017)
Old Dec 14, 2018, 01:05 PM
  #399  
EvoM Guru
iTrader: (5)
 
SoSoEVO's Avatar
 
Join Date: Oct 2018
Location: CA
Posts: 390
Received 160 Likes on 117 Posts
Whoa my brain is fried, so much technical info in here haha! Good job on everyone's input recommendations as this will only help us all in the future.
Old Dec 14, 2018, 01:48 PM
  #400  
EvoM Staff Alumni
iTrader: (3)
 
MinusPrevious's Avatar
 
Join Date: May 2008
Location: So.Cal
Posts: 7,704
Received 1,384 Likes on 1,317 Posts
Originally Posted by SoSoEVO
Whoa my brain is fried


The following users liked this post:
SoSoEVO (Dec 17, 2018)
Old Dec 15, 2018, 07:43 PM
  #401  
EvoM Guru
iTrader: (6)
 
V.8MR's Avatar
 
Join Date: Nov 2006
Location: STL
Posts: 2,230
Received 226 Likes on 155 Posts
Originally Posted by MinusPrevious
I see why, Thanks Sean.


Might be the first time I'm seeing under an Evo X. Did they make the rear subfame out of steel? eew
Old Dec 15, 2018, 07:49 PM
  #402  
EvoM Staff Alumni
iTrader: (3)
 
MinusPrevious's Avatar
 
Join Date: May 2008
Location: So.Cal
Posts: 7,704
Received 1,384 Likes on 1,317 Posts
Originally Posted by V.8MR
Might be the first time I'm seeing under an Evo X. Did they make the rear subfame out of steel? eew

Yeah, the Mitsu bean counters got involved The rear end is no where the quality of the CT9A
Old Dec 17, 2018, 10:31 AM
  #403  
EvoM Guru
iTrader: (5)
 
SoSoEVO's Avatar
 
Join Date: Oct 2018
Location: CA
Posts: 390
Received 160 Likes on 117 Posts
Originally Posted by MinusPrevious
LOL more like the anti drug commercial from the 90's of the egg scrambling "this is your brain on drugs"
The following users liked this post:
MinusPrevious (Dec 17, 2018)
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Hiboost
Evo X Tires / Wheels / Brakes / Suspension
75
Dec 4, 2019 05:09 PM
LSD Motorsports
Vendor Classifieds
10
May 18, 2017 03:19 PM
GTWORX.com
Evo Tires / Wheels / Brakes / Suspension
21
Oct 13, 2016 11:04 AM
Hoojan
For Sale - Suspension / Brakes / Handling
4
Jul 14, 2016 02:36 PM
.DoT.
Evo Tires / Wheels / Brakes / Suspension
3
Jun 20, 2016 07:42 PM



Quick Reply: Choosing coilover spring rates for your EVO



All times are GMT -7. The time now is 05:22 AM.