Spring Rates/Drop rate

[mhx]

[Springs]
Stock EP3: Spring Rate: (248 Front/440 Rear)
Stock RSX: Spring Rate: (279 Front/458 Rear)
-
Dropzone: Spring Rate: (? Front/? Rear) - Drop: (2in all around)
Eibach Pro-kit: Spring Rate: (15-20% more than stock) - Drop: (1in Front/1.1in rear)
Eibach Sportline: Spring Rate: (20-25% more than stock) - Drop: (1.4in Front/1.5in Rear)
H&R Sport: Spring Rate: (25-30% more than stock) - Drop: (2in all around)
Neupseed Race: Spring Rate: (200 Front/280 Rear) - Drop: (2in all around)
Neupseed Sport: Spring Rate: (200 Front/280 Rear) - Drop: (1.5in Front/1.5in Rear)
Progress: Spring Rate: (280 Front/500 Rear) - Drop: (1.8in Front/1.5in Rear)
Sprint: Spring Rate: (20-25% more than stock) - Drop: (2in all around)
Spoon Progressive: Spring Rate: (413 Front / 458 Rear) - Drop: (1.5-1.7in all around)
Tanabe df210: Spring Rate: (10-15% more than stock) Drop: (2in Front/2.3in Rear)
Tanabe nf210: Spring Rate: (10-15% more than stock) Drop: (1.5in all around)
Tanabe gf210: Spring Rate: (20-30% more than stock) Drop: (1.3in Front/1.5in Rear)
Tein H Tech: Spring Rate: (257 Front/476 Rear) Drop: (.8in Front/.7in Rear)
Tein S Tech: Spring Rate: (280 Front/515 Rear) Drop: (1.4in Front/1.3in Rear)

[Ground Controls]
Dropzone: Spring Rate: (? Front/? Rear)
Ground Control EP3 kit: Spring Rate: (375 Front/450 Rear)
Skunk2 Coilovers: Spring Rate: (440 Front/330 Rear)

[Full Coil-overs] Spring & Shock (fixed height)
Mugen: Spring Rate: (283 Front/439 Rear) Drop: (1.4in all around)
Honda Factory Performance: Spring Rate: (? Front/? Rear) Drop: (?in all around) - very similar to the mugen kit, awaiting specs

[Full Coil-overs] Spring & Shock (adj height)
Buddy Club Racing Spec: Spring Rate (559 Front/894 Rear) (Adj ?? min - ?? max)
JIC FLT-A2: Spring Rate: (504 Front/560 Rear) Drop: (Adj stock - 3.5in max)
KW V2: Spring Rate: (340 Front/515 Rear) Drop: (Adj 1.4in min - 2.6in max)
Progress C1: Spring Rate: (350 Front/640 Rear) Drop: (Adj 1in min - 4in max)
Tein Basic: Spring Rate: (336 Front/448 Rear) Drop: (Adj ?? min - ?? max
Tein Type Flex: Spring Rate: (448 Front/559 Rear) Drop: (Adj ?? min - ?? max)
V2 Coilover kit from KW: Spring Rate: (340 Front/500 Rear) Drop: (Adj 1.4 min - 2.6 max)

[conversion rates]
1 kg/mm = 55.88 lb/in
1 N/mm = 5.588 lb/in

[What is Progressive Spring Rate?]
Progressive rate springs are likely

[Btrthnezr3]

Great info...Sticky.

[02SilverSiHB]

*Stock: 248 front 440 rear *

Eibach pro kit: 15-20% more than stock Drop: 1" front and 1.1" rear
Eibach sport line: 20-25% more than stock Drop: 1.4 Front 1.5 Rear
GroundControl EP3 kit: 375ft/450rear
H&R Sport: 25-30% more than stock Drop: 2" Front and Rear
JIC FLT-A2 coil overs: 392 front and 448 rear
Mugen Spring Rate: EP3 49.6/77.1 N/mm F/R (=283/439 lb/in F/R)
Neupseed Race: 200 front 280 rear Drop: 2" front and rear
Neupseed Sport: 200 front 280 rear Drop: 1.5" front and rear
Older set is 440 front and rear
Progress: 280 front and 500 rear Drop: 1.8" front and 1.5" rear
RXS 49.0/80.4 N/mm F/R (=279/458 lb/in F/R)
Skunk2 Coilovers: Newer set is 440 front and 330 rear
Spoon Progressive F/R (kg/mm) 7.4 / 8.2 (1.5-1.7in drop)
Sprint: 20-25% more than stock Drop: 2" front and rear
Tein Flex: 448 front and 559 rear
Tein S Tec: ???? Drop 1.5" front 1.4" rear
Tein Type Flex: 8ft/10rear (448/560)
V2 Coilover kit from KW: 340 front 500 back drops from 1.4" - 2.6"

reply with any corrections/updates.. Thanks 02silver found your old post on k-series.. Please sticky this.

cool, where did you find it on k-series? I couldn't find it, everythings been switched around over there.

Oh, I'm not a mod, so I can't sticky it

[Gold_EP3]

i know its a dumb question but, the higher the spring rate the softer? or is it the higher the spring rate the stiffer? thanks guys

[mhx]

i know its a dumb question but, the higher the spring rate the softer? or is it the higher the spring rate the stiffer? thanks guys

higher the spring rate the stiffer the ride.

[djsolution]

mhx, are you sure about the tein s-tech spring rates? I was under the impression that they had lower rates than stock.

[djsolution]

Never mind, I just checked the TEIN website and saw that they're developing an EP3-specific application with the 280/515 rates. Unfortunately, those of us with the 01+ civic s-tech springs have the soft-as-buttah 157/291 rates. :(

[mhx]

mhx, are you sure about the tein s-tech spring rates? I was under the impression that they had lower rates than stock.

its on the website

[02SilverSiHB]

Never mind, I just checked the TEIN website and saw that they're developing an EP3-specific application with the 280/515 rates. Unfortunately, those of us with the 01+ civic s-tech springs have the soft-as-buttah 157/291 rates. :(

yeap...time to trade up for the real ones :D

[02SilverSiHB]

its on the website

I'd annote that some people have the lower spring rate, because tein just came out with specific ones for the ep3

[John02Si]

correct me if i'm wrong but the :

Neupseed Sport: Spring Rate: (200 Front/280 Rear) - Drop: (1.5in Front/1.5in Rear)

Will actually be a softer ride than stock???

[mhx]

correct me if i'm wrong but the :
Neupseed Sport: Spring Rate: (200 Front/280 Rear) - Drop: (1.5in Front/1.5in Rear) Will actually be a softer ride than stock???

Consider you have 2 springs having different spring rates: One with 345 and the other with 480. So what does it mean?

It means the 1st spring will compress 1mm if you put a load of 345 grams, while the 2nd one will not. The 2nd one will need a 480 g. load to compress 1mm. According to this, we can say that the 2nd spring is harder than the 1st one, or we can state that:

Springs that have a low Spring Rate are soft, while springs that have a high Spring Rate are stiffer.

[John02Si]

that being said above, am i going to be bouncing all over the place? i know ive already asked a few of you this question, but i'm really looking for the closest feel to stock as possible.

[FattyMcJ]

Anyone have any info on the D2 coilovers? Are these good for AutoXing?

[mhx]

that being said above, am i going to be bouncing all over the place? i know ive already asked a few of you this question, but i'm really looking for the closest feel to stock as possible.

I suggest getting:
Mugen: Spring Rate: (283 Front/439 Rear) Drop: (1.4in all around)
or
get an pro-kit