Spring Rates

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Old Mar 13, 2003 | 04:42 AM
  #1  
il8apex's Avatar
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From: Royal Oak, MI, USA
Default Spring Rates

I know, I know... USE THE SEARCH! I did, it yeilded nothing. Does it work?

I have some Suspension Techniques lowering springs for my '91 CRX Si that came with the car (in a box). Can someone tell me what rates these are ( in lbs/in )?

Thanks in advance...

-Tom
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Old Mar 13, 2003 | 04:53 AM
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Default Re: Spring Rates (il8apex)

Are they the regular lowering springs or the Speedtech springs?
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Old Mar 13, 2003 | 06:24 AM
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Default Re: Spring Rates (BTLFED)

I don't have the box in front of me, but I believe they're the regular lowering springs. They're silver in color, if that helps.

-Tom

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Old Mar 13, 2003 | 05:09 PM
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Default Re: Spring Rates (il8apex)

The silver ones should be the SpeedTech Springs. They should be a 1.8" drop front and rear. I can check on the actual spring rates for you if you would like, but I can tell you from experience they aren't that stiff.
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Old Mar 13, 2003 | 07:47 PM
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Default Re: Spring Rates (BTLFED)

is 243 front and 200 rear considered soft? (yeah, I know coilovers are much stiffer, but they are coilovers....I have an entire stroke to use)

243/200 is what Tenzo R springs, according to them.

P.S. SuperHatch said he made a post a long time ago about spring rates of different companies that he compiled....never found it through search, but I'd like to see it...


[Modified by CRXSi90, 4:49 AM 3/14/2003]
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Old Mar 14, 2003 | 06:55 AM
  #6  
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Default Re: Spring Rates

Yep, checked the box last night and they ARE the SpeedTechs.

I don't mind if they're not that stiff... In fact, it's just for a street car.

SuperHatch, are you out there? I'd still like to know the rates, just as a starting point.

-Tom
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Old Mar 14, 2003 | 10:05 PM
  #7  
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Default Re: Spring Rates (il8apex)

Hmm, maybe we'll have to do some PMing.
Ok, I'm not going crazy, he really said this: SuperHatch's post on 4:39 PM 5/15/2002 (LOL)
Great posts! I love to see someone actually doing some reasearch about their car. I wrote an article a while back about all the different spring companys and, all the varying spring rates...(a lot of phone time) I think i got 3 responses..heh. Keep up the good work!!

-Jake
from Sonny's Piston project post---https://honda-tech.com/zerothread?id=186192


[Modified by CRXSi90, 7:22 AM 3/15/2003]
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Old Mar 15, 2003 | 08:53 AM
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From: MKE
Default Re: Spring Rates (il8apex)

First off, I know alot of you might allready know all this...but it might help out some people.
There are two types of springs 1. Progressive, and 2. Linear.
The differences between these two it this...the progressive spring will increse its spring rate as is compresses, for exampe the spring rate might start at 100lbs/sq.in., and once you turn hard into a corner it will start to compress and the spring rate might increase to 240lbs/sq.in.. You get a smooth ride and a tight spring all in one. The progressive type spring dosent work smoothly for all cars though (the 00' passat cant use them because the progressive spring makes it unstable), thats whare the Linear spring comes into play.

The Linear spring is really simple.. It has one spring rate all the time. Usually a linear spring will have one higher rate, such as 250lbs/sq.in.

The EF hatchback uses both.. (Eibach Sportline) A linear spring up front at 274.1lbs/sq.in. and a progressive spring in back at 97.1lbs/sq.in. (inital)___228.4lbs/sq.in.(final)

Hope you learned something...if I left anything out, or messed it up...let me know. Thanks

------------------------------------

From what the tech said... "A progressive spring would unbalance the car in the front due to the added weight." Just got off the phone with a tech from H&R and I got their spring rates for the Race spring for a 90 HB...both are linear. front 450lbs/sq.in. and rear 250lbs/sq.in. Quite a bit stiffer than the Eibach springs. He said they were disigned with Auto-Xers and track days in mind. Yummy!
----------------------------------
Well, Freak... From all the info I've heard, if your really looking for performance you should steer away from non-threaded coil overs. First off if you want the right setup you'll have to take it in to a shop and have it weighed on all corners, so that the spring rates are the same on each side. Then if you adjust them at all( ...if you didnt ..why would you want an 'adjustible' coil over?) you will have to get that whole thing done again. If your just looking for show and really dont care if your suspension is balanced, as long as its lower...go for coil-overs. you can get a really big drop from them. Or if you really dont care and just want a drop for cheap buy some sprint springs (like the guy who owened the car before me did...BAH!) Look at it this way also. I weigh about 140..if a guy that weighed 210 was driving the same car, would he get a different spring setup?? I have 2 friends that weigh above 210+ and they run the same springs I would. I told the guy at H&R that I was doing a swap and he said it wouldnt make a difference.
-------------------

Thats all the info I posted before....the whole thread can be found here

https://honda-tech.com/zerothread?id=125962

-Jake

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