S2000 Spring Rate & Sway bar rates
#11
Thread: https://www.s2ki.com/...ension-springs/
Link to pdf: http://www.mccanless...prings_rev1.pdf
Summary of spring rate findings:
Link to pdf: http://www.mccanless...prings_rev1.pdf
Summary of spring rate findings:
Code:
| Front Rear | Front Rear Model Year | Spring Spring | Sway Bar Sway Bar --------------+------------------+-------------------- 2000-2001 | 219 291 | 393 427 2002-2003 | 246 309 | 300 396 2004-2005 | 262 278 | 300 311 2006-2007 | 262 269 | 300 311 2008-2009 | 280 294 | 354 311 2008-2009 CR | 384 343 | 392 362 Note 1: All figures are in lb/in. Divide by 56 to get kg/mm. Note 2: Edited 17Nov2010 with slight updates to spring rates per rev1 of paper.
is this the correct spring rate for 02-03? there are other people say it's 240/230
like this link here https://www.s2ki.com/s2000/topic/512...-spring-rates/
#12
Community Organizer
Thread Starter
This is correct, other posts were based on early misunderstood/misinterpreted information. The author of this paper (read the paper) verified all the data, actually measured spring samples from each year and calculated all the rates from the samples.
When I bought aftermarket shocks I sourced several sets of OEM springs, trying to get exact '03 rates. I was very frustrated because the rates of the springs I acquired didn't line up with the rates previously published. It appeared to me that the color codes were just representative of part runs or supplier. Now that we know the color codes, the rates he list in his paper line up very closely with the colors on the springs I have (I have several sets).
When I bought aftermarket shocks I sourced several sets of OEM springs, trying to get exact '03 rates. I was very frustrated because the rates of the springs I acquired didn't line up with the rates previously published. It appeared to me that the color codes were just representative of part runs or supplier. Now that we know the color codes, the rates he list in his paper line up very closely with the colors on the springs I have (I have several sets).
#13
This is correct, other posts were based on early misunderstood/misinterpreted information. The author of this paper (read the paper) verified all the data, actually measured spring samples from each year and calculated all the rates from the samples.
When I bought aftermarket shocks I sourced several sets of OEM springs, trying to get exact '03 rates. I was very frustrated because the rates of the springs I acquired didn't line up with the rates previously published. It appeared to me that the color codes were just representative of part runs or supplier. Now that we know the color codes, the rates he list in his paper line up very closely with the colors on the springs I have (I have several sets).
When I bought aftermarket shocks I sourced several sets of OEM springs, trying to get exact '03 rates. I was very frustrated because the rates of the springs I acquired didn't line up with the rates previously published. It appeared to me that the color codes were just representative of part runs or supplier. Now that we know the color codes, the rates he list in his paper line up very closely with the colors on the springs I have (I have several sets).
#14
Community Organizer
Thread Starter
Those are really pretty small differences, but no harm in trying those rates.You would probably see a bigger change in handling with a smaller rear sway bar. I would really be tempted to try the rear bar from an 04-09 (or the Miata bar that is popular).
#15
i bought a CR rear sway bar for my MY 01, i just wanna find out which one is left/right,my friend has MY06 ap2 and when i checked his rear sway bar on his car it seems different than mine.
#16
Community Organizer
Thread Starter
Originally Posted by jeallen' timestamp='1407105213' post='23271497
Those are really pretty small differences, but no harm in trying those rates.You would probably see a bigger change in handling with a smaller rear sway bar. I would really be tempted to try the rear bar from an 04-09 (or the Miata bar that is popular).
Hope this helps!
#17
Originally Posted by Princeneo' timestamp='1426248421' post='23538508
[quote name='jeallen' timestamp='1407105213' post='23271497']
Those are really pretty small differences, but no harm in trying those rates.You would probably see a bigger change in handling with a smaller rear sway bar. I would really be tempted to try the rear bar from an 04-09 (or the Miata bar that is popular).
Those are really pretty small differences, but no harm in trying those rates.You would probably see a bigger change in handling with a smaller rear sway bar. I would really be tempted to try the rear bar from an 04-09 (or the Miata bar that is popular).
Hope this helps!
[/quote]
Question about your camber suggestion. assuming front is 1 and rear is 2 negative camber.
Are you suggesting 1 and 3 or 1 and 1.2 ??? Not sure if you meant that decimal point to be in there.
#18
Community Organizer
Thread Starter
Originally Posted by jeallen' timestamp='1426302320' post='23539558
[quote name='Princeneo' timestamp='1426248421' post='23538508']
[quote name='jeallen' timestamp='1407105213' post='23271497']
Those are really pretty small differences, but no harm in trying those rates.You would probably see a bigger change in handling with a smaller rear sway bar. I would really be tempted to try the rear bar from an 04-09 (or the Miata bar that is popular).
[quote name='jeallen' timestamp='1407105213' post='23271497']
Those are really pretty small differences, but no harm in trying those rates.You would probably see a bigger change in handling with a smaller rear sway bar. I would really be tempted to try the rear bar from an 04-09 (or the Miata bar that is popular).
Hope this helps!
[/quote]
Question about your camber suggestion. assuming front is 1 and rear is 2 negative camber.
Are you suggesting 1 and 3 or 1 and 1.2 ??? Not sure if you meant that decimal point to be in there.
[/quote]
.2 degrees more negative camber in the rear than in the front is correct. The stock adjustments are somewhat limited, so for autocross you want all you can squeeze out of the adjusters. However for balance, you would take whatever you can get in the rear (example -2.0) and set the front .2 deg less (making the front -1.8).
The following users liked this post:
jeallen (02-24-2020)
Thread
Thread Starter
Forum
Replies
Last Post