spring rate streetablity...??? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

formeRiceR · 02-13-2004, 01:05 PM

so I just put on my coilovers (HKS hypermax-II), it's way too stiff I have to change my springs. I was wondering what are some good spring rate setups, something that is decently stiff, but not stiff to the point where my kidneys hurt.

Also keep in mind I live in Boston, we have the crappiest roads...

PANDA · 02-13-2004, 01:13 PM

9k 7k...

Var · 02-13-2004, 01:28 PM

what are the rates for those springs that you are using now?

formeRiceR · 02-13-2004, 01:48 PM

8K in front
5K in Back

Also will my ride quility get bettter with more chaissis stiffening or will it get worst?

Var · 02-13-2004, 01:55 PM

i'm running 6.7k/5.5k with AGX and it's pretty fucked up for streets, but o well.

surprisingly front pillow ball mounts made the ride better.

my roll cage made a difference kinda, but not too much in the way of comfort so dont count on it.

does your car underteer at all with 8K in the front? that's pretty stiff. I'd go for like 20%softer all around or 30% i dont know how bad the roads are over there.

GonadSX · 02-13-2004, 03:11 PM

I will have 7/5 D2 coilovers (yea, not exactly the dope sh*t like Tein but oh well, took
the risk in trying it out).

It will go on my daily driver. Amongst other things are bushings upgrade and swaybars.
Can't wait to feel how it handles.

DuffMan · 02-13-2004, 03:19 PM

6kg/mm seems like a good compromise. I have been driving arround on 8/6 for a while and its not that the stiffness is unbearable. It's more that it doesnt seem to help the car handle any better, unless the road is perfect. Little cracks and stuff throw off your traction.

JasonNagra · 02-13-2004, 03:38 PM

8k/6k on my HE's is VERY streetable. It must be because of the valving that the HKS units are so much stiffer. Have you turned the damper to its softest setting yet??

Halz · 02-13-2004, 05:13 PM

Spring rate choices with the same bias you currently have are:

7kg and 4kg or
6kg and 3kg or
5kg and 2kg

As the number decends, the spring will be more compliant on bumpy roads! ...So how bumpy of a road are we talking here? Bumpy-bumpy? Or Bumpy-BUMPY-bumpy?!

If they're Bumpy-BUMPY-bumpy, its very obvious you should go with 2kg at each corner

FallbrookS13 · 02-13-2004, 06:38 PM

naaa that cant be too stiff. my he's are 8 and 6 and its fine for street.

*AceInHole* · 02-13-2004, 08:16 PM

Quote:

Originally Posted by FallbrookS13

naaa that cant be too stiff. my he's are 8 and 6 and its fine for street.

I keep hearing that HE's are soft compared to other coilovers. I've heard some say that some 6/5 (IIRC it was the Apexi setup) setups feel stiffer than the HE's.

JasonNagra · 02-13-2004, 11:06 PM

Quote:

Originally Posted by AceInHole

I keep hearing that HE's are soft compared to other coilovers. I've heard some say that some 6/5 (IIRC it was the Apexi setup) setups feel stiffer than the HE's.

You are 100% right. Its all about valving and shock design.

FallbrookS13 · 02-13-2004, 06:39 PM

you going to wish you kept those springs when you hit the track

ICKY · 02-13-2004, 10:21 PM

If you think boston roads are bad, go to detroit. me and the family went there in a pontiac trans am, this car didnt make the slightest bit of noise. but when we came back, everything from the suspention to the seat belts were squeakin.

kambob · 02-16-2004, 01:24 PM

Quote:

Originally Posted by ICKY

If you think boston roads are bad, go to detroit. me and the family went there in a pontiac trans am, this car didnt make the slightest bit of noise. but when we came back, everything from the suspention to the seat belts were squeakin.

You have no I idea the roads or so bad that you have to have a jeep just to get a round. like me

detroit roads = oof road madness

ridebmx · 02-16-2004, 05:20 PM

12k front 10k rear, me driving in town "where did i put those extra kidneys" but i live in a very rural area with many nice hardly populated country roads, my whole county is 37000 people, so yeah its small here, your roads must be really shitty, becuase i dont even complain with my rates, i just dont drive around town. problem solved

Salty_X · 02-16-2004, 06:01 PM

Quote:

Originally Posted by ridebmx

12k front 10k rear, me driving in town "where did i put those extra kidneys" but i live in a very rural area with many nice hardly populated country roads, my whole county is 37000 people, so yeah its small here, your roads must be really shitty, becuase i dont even complain with my rates, i just dont drive around town. problem solved

12/10? Do you have GP Sports coilovers? Those are the only ones I know of with those rates...

I'm guessing you go to MTU (or Finlandia). Did you just start this year? I went there last year and never saw any 240s. You're right though all the out-of-town roads are nice and smooth. I wanted to take my car up that curvy highway towards Lake Superior, but it was sitting in the garage back in California while I was there.

formeRiceR · 02-16-2004, 10:02 PM

this question is for your suspension gurus, is there a BIG difference between 8KG and 6 KG (or 5 KG), I actually like the way the back feels with it's 5KG. I want to make the front less stiffer, so I'm thinking about lowering the rate to 6 KG or 5KG, you think it'll health with my kidney problems.

cowbomb · 02-17-2004, 02:45 PM

8 and 6 is good for me

*sykikchimp* · 02-17-2004, 02:55 PM

I will be running:
6K F 5K R for street. 8K F 6K R track

6/5 will work well for you. SCC reported a much more compliant ride, and better grip on rough street surfaces with 6/5 setup with FLT-A2's. I've read that the HKS dampers are very much like the FLT-A2's. Given that I would assume they woud react very similarly.

formeRiceR · 02-18-2004, 03:55 AM

Quote:

Originally Posted by sykikchimp

I will be running:
6K F 5K R for street. 8K F 6K R track

6/5 will work well for you. SCC reported a much more compliant ride, and better grip on rough street surfaces with 6/5 setup with FLT-A2's. I've read that the HKS dampers are very much like the FLT-A2's. Given that I would assume they woud react very similarly.

was this for the S13 or the S14, I have an S14

Thanks.

*sykikchimp* · 02-18-2004, 07:57 AM

Quote:

Originally Posted by formeRiceR

was this for the S13 or the S14, I have an S14

Thanks.

doesn't really matter. S14 is a little heavier, so the ride would be a touch softer in an s14 with those rates than an S13.

Flybert · 02-17-2004, 03:05 PM

Apexi N1 Pro on softest settings with 8/6 are downright comfortable. When they are on the stiff setting, they will jar your brains out. Love em' to death.

KyoLo · 02-18-2004, 05:16 AM

i'm on default setting already jar my brains and bones off.......everytime goes over a bump sounds like the car is breaking or something..... need to get my quick adjusters ASAP..it has been 6 WEEKS!!! still haven't got it.

Quote:

Originally Posted by Flybert

Apexi N1 Pro on softest settings with 8/6 are downright comfortable. When they are on the stiff setting, they will jar your brains out. Love em' to death.

fastpace · 02-18-2004, 08:42 AM

they tein he's are nice in rural areas, but whenever I go to houston I must prepare myself for hell. Houston roads really suck and I feel like sh!t whenever I am finish driving. I have to admit, the ride smoothness did get stiffer though to the subframe spacers.

02-13-2004, 01:05 PM	#1
formeRiceR Zilvia Member Join Date: Dec 2001 Location: Mass Age: 43 Posts: 280 Trader Rating: (0) Feedback Score: 0 reviews	spring rate streetablity...??? so I just put on my coilovers (HKS hypermax-II), it's way too stiff I have to change my springs. I was wondering what are some good spring rate setups, something that is decently stiff, but not stiff to the point where my kidneys hurt. Also keep in mind I live in Boston, we have the crappiest roads... __________________ "Street racers don't need girls." -Lonely Driver Learning about cars one FLAME at a time ... (thanks to TNORD)

02-13-2004, 01:28 PM	#3
Var Post Whore! Join Date: Sep 2003 Location: Norcal Age: 43 Posts: 5,032 Trader Rating: (0) Rides Gallery: Var Feedback Score: 0 reviews	what are the rates for those springs that you are using now? __________________ Hi

02-13-2004, 01:48 PM	#4
formeRiceR Zilvia Member Join Date: Dec 2001 Location: Mass Age: 43 Posts: 280 Trader Rating: (0) Feedback Score: 0 reviews	8K in front 5K in Back Also will my ride quility get bettter with more chaissis stiffening or will it get worst? __________________ "Street racers don't need girls." -Lonely Driver Learning about cars one FLAME at a time ... (thanks to TNORD)

02-13-2004, 01:55 PM	#5
Var Post Whore! Join Date: Sep 2003 Location: Norcal Age: 43 Posts: 5,032 Trader Rating: (0) Rides Gallery: Var Feedback Score: 0 reviews	i'm running 6.7k/5.5k with AGX and it's pretty fucked up for streets, but o well. surprisingly front pillow ball mounts made the ride better. my roll cage made a difference kinda, but not too much in the way of comfort so dont count on it. does your car underteer at all with 8K in the front? that's pretty stiff. I'd go for like 20%softer all around or 30% i dont know how bad the roads are over there. __________________ Hi

02-13-2004, 03:38 PM	#8
JasonNagra Zilvia FREAK! Join Date: Aug 2002 Location: Long Beach Posts: 1,349 Trader Rating: (0) Feedback Score: 0 reviews	8k/6k on my HE's is VERY streetable. It must be because of the valving that the HKS units are so much stiffer. Have you turned the damper to its softest setting yet?? __________________ http://www.imagestation.com/picture/...f/f9dc7664.jpg Edit: check your link.

02-13-2004, 01:13 PM	#2
PANDA BANNED Join Date: Feb 2004 Location: in a cave Posts: 149 Trader Rating: (0) Feedback Score: 0 reviews	9k 7k...

02-13-2004, 03:11 PM	#6
GonadSX Leaky Injector Join Date: Jun 2003 Location: Ontario Posts: 131 Trader Rating: (0) Feedback Score: 0 reviews	I will have 7/5 D2 coilovers (yea, not exactly the dope sh*t like Tein but oh well, took the risk in trying it out). It will go on my daily driver. Amongst other things are bushings upgrade and swaybars. Can't wait to feel how it handles.

02-13-2004, 03:19 PM	#7
DuffMan Post Whore! Join Date: Oct 2001 Location: in a cardboard box Posts: 2,517 Trader Rating: (0) Feedback Score: 0 reviews	6kg/mm seems like a good compromise. I have been driving arround on 8/6 for a while and its not that the stiffness is unbearable. It's more that it doesnt seem to help the car handle any better, unless the road is perfect. Little cracks and stuff throw off your traction.

02-13-2004, 05:13 PM	#9
Halz BANNED Join Date: Apr 2002 Location: bay area Age: 41 Posts: 214 Trader Rating: (0) Feedback Score: 0 reviews	Spring rate choices with the same bias you currently have are: 7kg and 4kg or 6kg and 3kg or 5kg and 2kg As the number decends, the spring will be more compliant on bumpy roads! ...So how bumpy of a road are we talking here? Bumpy-bumpy? Or Bumpy-BUMPY-bumpy?! If they're Bumpy-BUMPY-bumpy, its very obvious you should go with 2kg at each corner

02-13-2004, 06:38 PM	#10
FallbrookS13 Leaky Injector Join Date: Jul 2003 Location: Fallbrook, CA ....i love this place Age: 40 Posts: 126 Trader Rating: (0) Feedback Score: 0 reviews	naaa that cant be too stiff. my he's are 8 and 6 and its fine for street. __________________ hi.

02-13-2004, 06:39 PM	#13
FallbrookS13 Leaky Injector Join Date: Jul 2003 Location: Fallbrook, CA ....i love this place Age: 40 Posts: 126 Trader Rating: (0) Feedback Score: 0 reviews	you going to wish you kept those springs when you hit the track __________________ hi.

02-13-2004, 10:21 PM	#14
ICKY Account Closed Join Date: Jul 2003 Location: Va Beach Age: 37 Posts: 582 Trader Rating: (0) Feedback Score: 0 reviews	If you think boston roads are bad, go to detroit. me and the family went there in a pontiac trans am, this car didnt make the slightest bit of noise. but when we came back, everything from the suspention to the seat belts were squeakin.

02-16-2004, 05:20 PM	#16
ridebmx Zilvia Junkie Join Date: Mar 2002 Location: Michigan Age: 41 Posts: 379 Trader Rating: (0) Feedback Score: 0 reviews	12k front 10k rear, me driving in town "where did i put those extra kidneys" but i live in a very rural area with many nice hardly populated country roads, my whole county is 37000 people, so yeah its small here, your roads must be really shitty, becuase i dont even complain with my rates, i just dont drive around town. problem solved __________________ I like my car, you may not...You like your car, I may not...To each there own, right? waiting for the sunken look to be cool..lol

02-16-2004, 10:02 PM	#18
formeRiceR Zilvia Member Join Date: Dec 2001 Location: Mass Age: 43 Posts: 280 Trader Rating: (0) Feedback Score: 0 reviews	this question is for your suspension gurus, is there a BIG difference between 8KG and 6 KG (or 5 KG), I actually like the way the back feels with it's 5KG. I want to make the front less stiffer, so I'm thinking about lowering the rate to 6 KG or 5KG, you think it'll health with my kidney problems. __________________ "Street racers don't need girls." -Lonely Driver Learning about cars one FLAME at a time ... (thanks to TNORD)

02-17-2004, 02:45 PM	#19
cowbomb Leaky Injector Join Date: Jun 2003 Location: Socal Age: 43 Posts: 95 Trader Rating: (0) Feedback Score: 0 reviews	8 and 6 is good for me

02-17-2004, 02:55 PM	#20
sykikchimp WOW addicted Join Date: Dec 2001 Location: the moon Age: 44 Posts: 6,525 Trader Rating: (0) Feedback Score: 0 reviews	I will be running: 6K F 5K R for street. 8K F 6K R track 6/5 will work well for you. SCC reported a much more compliant ride, and better grip on rough street surfaces with 6/5 setup with FLT-A2's. I've read that the HKS dampers are very much like the FLT-A2's. Given that I would assume they woud react very similarly. __________________

02-17-2004, 03:05 PM	#23
Flybert Post Whore! Join Date: Mar 2003 Location: none Posts: 3,862 Trader Rating: (7) Feedback Score: 7 reviews	Apexi N1 Pro on softest settings with 8/6 are downright comfortable. When they are on the stiff setting, they will jar your brains out. Love em' to death.

02-18-2004, 08:42 AM	#25
fastpace Zilvia Addict Join Date: Jul 2001 Location: Houston, TX Age: 43 Posts: 689 Trader Rating: (0) Rides Gallery: fastpace Feedback Score: 0 reviews	they tein he's are nice in rural areas, but whenever I go to houston I must prepare myself for hell. Houston roads really suck and I feel like sh!t whenever I am finish driving. I have to admit, the ride smoothness did get stiffer though to the subframe spacers. __________________ life is what you make of it!!!! "well, I go out, I do the practice, I think about it and I concentrate on one small thing I can change that will have an effect. I make that change then I go out and drive to my maximum." -Ayrton Senna