Suspension Damper Settings with Swift Spec-r Springs
3rd Gear
Joined: Jul 2007
Posts: 199
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From: wisconsin
I'm about to install the swifts and yellows as well. The Dinan set up was to have the fronts at 1 full turn from soft and the rears at 7/8 of a turn from soft. I'm going to try that set up. I am not sure but I thought Dinan used Eibach springs with their suspension. I have not found information on comparing the Swift spec-r to the Eibach springs. Many people liked the Dinan route so I'm going to do my best to emulate it.
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2nd Gear
Joined: Nov 2006
Posts: 120
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The dinan springs are different than the eibach sport springs but dinan springs are made by eibach.
The little information i could get out of my dinan rep was the springs are linear and 20-40% stiffer than stock. With that i estimate them to be 200-230lb/in.
My instruction sheet said 1 turn from full soft on front and rear. This is similar to the recommendation that TSW made for their spring that are 200lb/in. So i assume they are very near 200lb/in, i got the suspension when dinan was closing them out and pretty much got the springs for free when i bought the yellows and both the tsw and swifts were out of stock everywhere.
With that i estimated that you would need more than 1 turn due the increase spring rate (+40% and +54% over dinan) . My guess would be 1.5 turns from full soft for front and rear, maby an 1/8 softer in the front.
I also heard that the Koni yellows can only really handle 400lb/in and that the first and last half turns are widely regarded as almost useless for adjustment. So with 1 turn at 200 and 2.5 turns at 400lbs assuming the rate is linear i get 1.6f/1.8r.
Rebound rate is directly related to spring rate. This is taking a few assumptions so that is why i asked. Be warned some people still think that the **** on the yellow is directly related to comfort / performance. Running rebound outside its optimal range will have a negative affect.
I am no expert but this is the information i have gathered, if i am way off someone pleas educate me.
-Jonathan
The little information i could get out of my dinan rep was the springs are linear and 20-40% stiffer than stock. With that i estimate them to be 200-230lb/in.
My instruction sheet said 1 turn from full soft on front and rear. This is similar to the recommendation that TSW made for their spring that are 200lb/in. So i assume they are very near 200lb/in, i got the suspension when dinan was closing them out and pretty much got the springs for free when i bought the yellows and both the tsw and swifts were out of stock everywhere.
With that i estimated that you would need more than 1 turn due the increase spring rate (+40% and +54% over dinan) . My guess would be 1.5 turns from full soft for front and rear, maby an 1/8 softer in the front.
I also heard that the Koni yellows can only really handle 400lb/in and that the first and last half turns are widely regarded as almost useless for adjustment. So with 1 turn at 200 and 2.5 turns at 400lbs assuming the rate is linear i get 1.6f/1.8r.
Rebound rate is directly related to spring rate. This is taking a few assumptions so that is why i asked. Be warned some people still think that the **** on the yellow is directly related to comfort / performance. Running rebound outside its optimal range will have a negative affect.
I am no expert but this is the information i have gathered, if i am way off someone pleas educate me.
-Jonathan
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