Springs
The information below is from various sources and may not be correct.
Factory Spring Data[edit]
Front Springs[edit]
CA20E[edit]
- Front Spring - Free Length 358 mm, Spring Rate 1.84 kg/mm 103 lb/in
RB30E[edit]
- Yellow Front Spring - Free Length 325 mm, Spring Rate 2.4 kg/mm 137 lb/in
- No Colour Front Spring - Free Length 342 mm, Spring Rate 2.4 kg/mm 136 lb/in
GTS1 GTS2[edit]
| Mean wire diameter (mm) | 14.6 |
|---|---|
| Mean coil diameter(mm) | 159.6 |
| Free Length(mm) | 285.0 |
| Spring constant (lb/in) | 190 |
| Identification colour | Red |
Rear Springs[edit]
CA20E & RB30E[edit]
- Rear Spring Sedan - Free Length 380.5 mm, Spring Rate 1.84-3.40 kg/mm 103-190 lb/in
- Rear Spring Wagon - Free Length 409.5 mm, Spring Rate 1.83-3.12 kg/mm 102-175 lb/in
GTS1 GTS2[edit]
| Mean wire diameter (mm) | 13.0 |
|---|---|
| Mean coil diameter(mm) | 100.0 |
| Free Length(mm) | 335.0 |
| Spring constant (lb/in) | 167- 279 |
| Identification colour | Green |
GTS1 Springs[edit]
GTS2 Springs[edit]
Common Aftermarket Springs[edit]
Whiteline:[edit]
- 74507A - is a linear spring with a rate of 189lbs/in. 35mm lowered (unsure) ??
- 78502 - is a progressive spring with a range of 145 > 190 lbs/in. 35mm
As of mid-2009, Whiteline have no more stock of these springs, and no plans to make any more.
King:[edit]
King Springs make superlows, but be aware that these are not considered legal for road use in most (if not all) states.
Superlows are not kept in stock and must be ordered, if you go to an automotive shop and ask for them, you will be told that they do not make them. This is incorrect, because the only spring listings they hold on file are springs which are held in stock.
You will need to go directly to the manufacturer, or ask the store if they can order them in for you.
- KDFL-29 = 145-205lb" progressive rate. 30mm lowered
- KDRL-30 = 110-160lb" progressive rate. 30mm lowered
Kings for wagons:
- KDRS-31 = standard
- KDRL-31 = lowered
Lovell:[edit]
- DFL-37 = 180lbs/inch 250mm free length. 40mm lowered
- DRL-38 = 165lbs/inch 310mm free length. 40mm lowered
Aurora:[edit]
February 2008[edit]
L=Low, S=Standard, H=High
- Sedan/Wagon S1-3 Front NIS11L 220lbs/inch. 40mm lowered
- Sedan S1/2 Rear NIS16RL 170lbs/inch. 40mm lowered
- Sedan S3 Rear NIS12RL 170lbs/inch. 50-70mm lowered
- Import Coupe Front NIS40L
- Rear NIS40RL
Mid 2009[edit]
There is a massive difference to what the site says and this is what I found.
- Front Sedan/Wagon NIS11L 200lbs/inch. 40mm lowered
- Front Sedan/Wagon NIS11LL 200lbs/inch. 50-70mm lowered (special order)
- Sedan Rear NIS12RL 200lbs/inch 40mm lowered
- Sedan Rear NIS12RLL 200lbs/inch 50-70mm lowered (special order)
- Wagon Rear NIS17RL 142lbs/inch 40mm
- Wagon Rear NIS17RLL 142lbs/inch 50-70mm lowered (special order)
- Wagon Rear NIS17RH 174lbs/inch 40mm raised HD and reset lower. (special order) This is a special order because it is a more heavy duty like for towing etc. but can be reset to any height under special request. For those with wagons that need it stiffer...
Coupe I quoted the numbers on the site and they made some funny sounds along the lines it did not exist. But they can create them custom if need be... So just call them...
$178 is the current price for fronts and rears for my silo 40mm lowered. The difference between the S1/2 and the S3 is rubbish they are all the same and the product codes have changed for the current stuff quoted on the site.
$228 is the current price for the 50-70mm lowered range that would need to be reset and the wagon stiffer in the rear. The coupe I got the impression that it would all be under special order prices...
-my_r31_baby
K-Mac:[edit]
40mm or 50mm lowered. (As advised can make in any height required)
Stock rate front is 280 lbs / 5 kg/mm
Rear is 200lbs / 3.6 kg/mm
Pedders:[edit]
Spring rate calculator/converter[edit]
Will sedan springs fit in a wagon?[edit]
No.
Miscellaneous Links[edit]
While we wait for the rest of this article to be compiled, here is a list of sites that sell suspension items.