Safe drop on stock struts? how low

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Old Sep 17, 2007 | 09:01 PM
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humancapital's Avatar
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Safe drop on stock struts? how low

Hi all, how low or what springs are available to me if i do not want to change the stock struts?

thanks
 
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Old Sep 17, 2007 | 09:53 PM
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its more than about how much, but also about the springrates of the new springs
 
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Old Sep 20, 2007 | 02:51 AM
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Originally Posted by redlude97
its more than about how much, but also about the springrates of the new springs
can you elaborate on how the springrates of the new springs affect your stock shocks? I am also thinking about getting new springs, but am not sure about what the springrates mean
 
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Old Sep 20, 2007 | 09:54 AM
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Originally Posted by shortylow50
can you elaborate on how the springrates of the new springs affect your stock shocks? I am also thinking about getting new springs, but am not sure about what the springrates mean
In a nutshell, the higher the spring rates the stiffer the spring. A rate is basically how much force is required to compress the spring, so a high rate means you have to put more force to compress it... i.e. will have a stiffer ride.

Each shock ("strut") is valved differently and valved to work well with a particular range of spring rates. For example, if you have a shock that is modestly valved for a 260lbs spring rate and you put a 600lbs spring in there, then you will get a bouncy ride. Why? Because the valving in the shock will be too weak to hold the spring from rebounding once compressed.

So, what's the quick answer? As always; it depends!

I don't know which car you have but assuming you have the coupe with OEM 18" wheels or the sedan with sport suspention, then your spring rates are Front:314 and Rear:342. If you get an aftermarket spring with similar rates, then you should be fine.

Of course, I'm assuming that your shocks are not worn and are still in good condition.

Hope this helped.
 
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Old Sep 20, 2007 | 12:21 PM
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Even 10% stiffer springs will decrease the ultimate life of shocks, unfortunately no one has come up with a decent equation for each brand.

Experience with Eibachs and older Nissan/Infiniti says about a 30% decrease in life for 10-15% increase in spring stiffness depending on road roughness.

Rear rebound seems to be the first to go soft with any lowering!
 
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