TwinTurbo.NET: Nissan 300ZX forum - Youre confusing two concepts.
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Subject Youre confusing two concepts.
     
Posted by ZiNnYc on June 11, 2012 at 2:01 PM
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In Reply To You're correct in theory, Kai... just not in practice posted by ZXoltan on June 11, 2012 at 01:10 PM
     
Message OEM springs are linear, but their spring rates are softer than the Eibachs. A progressive spring and a linear spring that have the same spring rate (progressive spring top rating) wont feel the same on the street, the progressive will feel softer.

The OEM spring rates are very soft, 3kg/mm up front an 2.4kg/mm in the rear (2.2 for NA). The Eibachs start off harsher than any of these rates, which is why they feel harder.


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