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Old 01-29-2008, 07:47 PM   #26
Butt Dyno
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Good find! I'll add em in a sec.
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Old 01-29-2008, 08:37 PM   #27
Butt Dyno
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Added. Really wierd that the 05-06 WRX springs and the 05-06 STi springs are the same part #.
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Old 02-21-2008, 09:16 PM   #28
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What's lb/in? What's kg/mm? What's the difference?

Lb/in and kg/mm are different ways of measuring how stiff a spring is. lb/in is how many pounds are necessary to make the spring compress one inch. A 100 lb/in spring with 200 pounds of weight on it will compress 2 inches (assuming there are two inches of travel). kg/mm is the same thing, but metric, like they use in Canuckistan. More info here:
http://forums.nasioc.com/forums/show....php?t=1083184
Rule of thumb'ish: Divide lb/in by 55 to get kg/mm. Multiply kg/mm by 55 to get lb/in.

You mean, like they use in every country of the world except USA, Liberia and Burma?

I would just remove that line since you mention at the beginning that they are different ways of measuring but in this line it says they are the same thing. I think people will get the point before reading this and it might confuses a couple Canucks like me that don't use the Metric system.

For your information we can't really use metric system for car parts in Canada since almost everything comes from the USA. I had never see the kg/mm before.
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Old 02-22-2008, 06:44 PM   #29
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here is more info on the tokico springs so you can take some of the ?? out

TOKICO UF 5102R-P
TOKICO UF 5102F-P
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Old 02-22-2008, 06:58 PM   #30
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Quote:
Originally Posted by 10-56 View Post
You mean, like they use in every country of the world except USA, Liberia and Burma?
Well, both are accurate

Quote:
Originally Posted by 10-56 View Post
I would just remove that line since you mention at the beginning that they are different ways of measuring but in this line it says they are the same thing. I think people will get the point before reading this and it might confuses a couple Canucks like me that don't use the Metric system.

For your information we can't really use metric system for car parts in Canada since almost everything comes from the USA. I had never see the kg/mm before.
Well a lot of them are sold by Japanese/Taiwanese companies - I think that's why kg/mm is so ubiquitous here.

john
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Old 02-28-2008, 03:02 PM   #31
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Hotchkis 19406
Impreza WRX 2001-03
Front 1.5'' Drop 230 lb/in
Rear 3/4'' Drop 146 lb/in

Hotchkis 19415
Impreza WRX 2004-up, Silver

Front 1.5'' Drop 230 lb/in
Rear 3/4'' Drop 146 lb/in
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Old 02-28-2008, 05:13 PM   #32
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WRX... 01-03?

We didn't get an 01 here
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Old 03-02-2008, 03:49 AM   #33
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I was trying to track down that chart of the camber curve earlier. Do you have it, and could it go in here somewhere? That whiteline roll center graph could be helpful too.
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Old 03-02-2008, 08:58 AM   #34
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Quote:
Originally Posted by jamal View Post
I was trying to track down that chart of the camber curve earlier. Do you have it, and could it go in here somewhere? That whiteline roll center graph could be helpful too.
I saw a really nice illustration but I can't remember where I saw it. It wasn't a chart, but a cutaway diagram from the inside of a car, demonstrating the "camber loss under load for a Macpherson strut" idea. If you can find any of this stuff I will figure out a way to integrate it though.
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Old 03-03-2008, 10:01 PM   #35
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Anyone have specs on 05+ sti springs as far as spring rate? Keep seeing all springs listed as 04 sti and 04-07 wrx then 05-07 sti. Is there any difference in the actual spring? I have 05 sti takeoffs now on my wagon and have ridden in a 06 sedan with H-techs and was alot better ride and handling and the Wrx H techs have the same spring rate as the 05+ h Techs.
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Old 03-07-2008, 05:33 AM   #36
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Destickying ; it's still in the Suspension Supersticky, though!
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Old 03-14-2008, 01:13 PM   #37
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Old 03-14-2008, 07:43 PM   #38
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damn I did not paste those here ... I could swear i double checked everything and i was about to post the ones that where missing...

maybe my Boss walked by and i closed the files ... hehehehe
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Old 04-05-2008, 07:34 AM   #39
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Quote:
Originally Posted by jamal View Post
I was trying to track down that chart of the camber curve earlier. Do you have it, and could it go in here somewhere? That whiteline roll center graph could be helpful too.
I was re-reading this to make sure all my sources were appropriately credited (apparently not everyone on the Internet believes that plagarism is a bad thing) and I can answer this question now, I think. It's actually in the FAQ, just not as an illustration:

Quote:
BigSky again with an explanation of how lowering a MacPherson strut car hurts the handling:
http://www.wrxtuners.com/forums/show...?t=9954&page=2
I should probably have copied the image into the post, but here it is:
Quote:
Originally Posted by Big Sky View Post
Here's why lowering springs can be troublesome for MacPherson strut setups



As you lower the vehicle, control arms become closer to paralell or in extreme cases lower than parallel!- this reduces the roll center which quite simply means the car is going to roll more - everything else being even.

To compensate for the reduction in roll center, lowering spring must increase spring rates- if they stay at stock or near stock rates- your performance is degrading, not improving.

There are springs available that lower modestly and increase spring rates, that will net you performance gains. The oe dampers (especially the 04+ ones) provide a fair amount of damping so if spring rates aren't too awful high, they'll do adequately matched w/ one of these springs.

The ideal setup would include moderate lowering, a good bump in spring rates with a well damped strut- fortunately these can be had Obviously optimizing alignment settings go a long way in increasing grip as well.

There will be a product on the market soon that will reverse the negative geometry effect of lowering- it simply provides a spacer to lengthen the lower ball joint so the lower arm goes less parallel. It will also provide a spacer for the tie rod so bump steer doesn't then become an issue.

This will allow you to have your cake and eat it too
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Old 04-05-2008, 10:22 AM   #40
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Prodrive lists their bugeye springs as 01-03, as well...

This list could be three springs long as far as I'm concerned... Prodrive, STI pink, and RCE. Done. haha
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Old 06-24-2008, 11:43 AM   #41
ryno50485
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Prodrive P1 springs for GC8 are RED... Blues for the 02-03 wrx will also work with the GC as well.. Didn't see info on prodrives for GC so i thought i'd add to the mix
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Old 06-24-2008, 01:39 PM   #42
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Noted - I will add it when I remember
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Old 06-25-2008, 07:50 AM   #43
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Added, though without spring rates it's not super useful. I think Northie has the rates though.
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Old 06-25-2008, 08:10 AM   #44
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The P1's are listed on North's sheet IIRC.
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Old 06-25-2008, 10:22 AM   #45
ryno50485
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P1 rates for GC are 215f 195r
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Old 07-03-2008, 08:51 AM   #46
mmiller2002
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Where do RCE springs fall in the rate table? Especially the wagon-specific ones.
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Old 07-03-2008, 08:59 AM   #47
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Well since the JDM Pink rates are known if you take them and adjust by the stiffness increases listed on the RCE website you'll have a ballpark figure.
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Old 07-03-2008, 12:11 PM   #48
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Quote:
Originally Posted by mmiller2002 View Post
Where do RCE springs fall in the rate table? Especially the wagon-specific ones.
Quote:
Originally Posted by QuikWgn View Post
Well since the JDM Pink rates are known if you take them and adjust by the stiffness increases listed on the RCE website you'll have a ballpark figure.
Or, you can refer to what RCE posted in one of their own threads:
Quote:
Originally Posted by RaceComp Engineering
WRX Wagon
Rates
Front - 278 lbs/in
Rear - 259 lbs/in
Drop
Front - 28 mm (from WRX height)
Rear - 24 mm (from WRX height)
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Old 07-03-2008, 12:48 PM   #49
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I thought I had the RCE's in there. Damn. I will add em when I can get to google docs
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Old 07-03-2008, 01:27 PM   #50
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Thanks y'all!
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