Planing to purchase a set of OEM style coils w/ swift springs upgrade. Was told swifts ride slightly softer. Rears are set to 11kg. Fronts have the option of 13k/12k.
|
|
LinkBack | Thread Tools | Display Modes |
12-31-2016, 10:09 PM | #1 (permalink) |
Base Member
Join Date: Jun 2016
Location: CA
Posts: 12
Drives: 370z
Rep Power: 9 |
Spring Rate Choices
Planing to purchase a set of OEM style coils w/ swift springs upgrade. Was told swifts ride slightly softer. Rears are set to 11kg. Fronts have the option of 13k/12k. Any opinions? Mostly street car w/ occasional/rare track. Attempted to look around but not many threads talk about the difference between front 13k/12k front spring rates. Any input would be appreciated.
|
12-31-2016, 10:16 PM | #2 (permalink) |
A True Z Fanatic
Join Date: Aug 2011
Location: Perrysburg, OH
Posts: 17,992
Drives: '11 Nismo #528 GM
Rep Power: 36941 |
Stiffer is better for the front. A lot of track and autox guys will actually run 1000 lb/in or more in the front. I personally run 1100 lb/in springs in the front. If the shocks are valved correctly for the spring rate, a stiff spring isn't really that bad on the street.
__________________
'11 370Z Nismo #528 Fast Intentions | Stillen | Motordyne | Uprev | CSF | Zspeed | Z1 Motorsports | AST | Swift | SPC | SPL | Whiteline | Hotchkis | Bride | Schroth | Robispec | Cusco | Nismo | Volk | Forgestar | Hoosier | RJM '17 Titan Bone Stock |
12-31-2016, 10:36 PM | #4 (permalink) |
A True Z Fanatic
Join Date: Aug 2011
Location: Perrysburg, OH
Posts: 17,992
Drives: '11 Nismo #528 GM
Rep Power: 36941 |
Stiffer front springs will tend more towards understeer.
__________________
'11 370Z Nismo #528 Fast Intentions | Stillen | Motordyne | Uprev | CSF | Zspeed | Z1 Motorsports | AST | Swift | SPC | SPL | Whiteline | Hotchkis | Bride | Schroth | Robispec | Cusco | Nismo | Volk | Forgestar | Hoosier | RJM '17 Titan Bone Stock |
01-01-2017, 11:34 AM | #5 (permalink) |
Track Member
Join Date: Jul 2012
Location: New Jersey
Posts: 997
Drives: 11 Nissan 370Z BS M6
Rep Power: 14 |
I went with BC's newer DR series with custom valving and 18/14k swift springs. It's not nearly as bad as I thought it would be but it's definitely stiff. I can't see 13/11 being all too bad.
|
01-01-2017, 12:32 PM | #6 (permalink) |
Enthusiast Member
Join Date: Aug 2015
Location: San Diego, Ca
Posts: 277
Drives: 16' 370z auto sport
Rep Power: 10076 |
I just got 12k/10k combo I think that's a perfect setup not too stiff I was told but not too soft either
__________________
Swift Spec R/KONI Yellow Shocks, SSR Executor CV01, GThaus, CF Lipkit, CF Hood/Fenders |
01-02-2017, 08:16 PM | #7 (permalink) |
A True Z Fanatic
Join Date: Aug 2012
Location: NW, AZ
Posts: 9,330
Drives: 10 Nissan 370z Nismo
Rep Power: 2684385 |
I am running Fortune Auto 500's 13k front and 10k rear. The ride is a little on the stiff side but no where near harsh. I love the setup!
__________________
Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:|Fast Intentions 3" TT-TDX|SpecialtyZ/Fast Intentions 72 Row Oil Cooler|SZ 6 Puck Clutch & Flywheel|3GsCustoms|Z1|Wavetrac|Hotchkis|Whiteline |Blitz|Fortune Auto 500|Fujimura|SPL|H&R|TK|TWM|RPM Rollbar|Sparco|Next Level Performance|TrackSpec|AeroFlow Dynamics|Pioneer| |
01-07-2017, 11:46 PM | #8 (permalink) |
Base Member
Join Date: Feb 2015
Location: NorCal
Posts: 149
Drives: Z34
Rep Power: 10 |
Also considering 13k or 12k swift fronts / 11k switch rears OEM style coils. Subbed
__________________
09 370Z Sport 6MT Chicane Yellow Powertrix | Swift | SPL | SPC | Fast Intentions | Berks | Stillen | Z1 | Setrab | Mocal | H&R | TWM | RJM | Sparco | Buddy Club | Tanabe | GaleForce | EVO-R | ZSpeed | Pioneer
|
01-10-2017, 04:34 PM | #9 (permalink) |
A True Z Fanatic
|
Popular choice is 12k/11k. Though since you are totally changing your setup, 1k difference in the front isnt that much. But in the end it all depends on driving style. Some people get a bigger sway bar in the rear to match up with the overly stiff front springs. Just depends if you want more or less understeer.
BC Racing BR or DR. Fortune Autos new 500s all are great choices with a set of Swift Coilover springs. I can get you great pricing on all of those if interested.
__________________
|
05-21-2018, 02:40 PM | #10 (permalink) |
A True Z Fanatic
Join Date: Apr 2012
Location: Roswell, GA
Posts: 1,179
Drives: wife crazy
Rep Power: 55 |
I just got this setup, with 14k/10k and it seems stiff as hell, almost feels static and the only absorption i'm getting is from tires, is it possible that installer set preload to tight? Changing stiffness setting on them only changes how much bouncy they are, which is better then 100% stiff i guess. If fronts are too stiff then i'd imagine that rear would feel ok at 10 but even rear is very stiff
Last edited by scope22; 05-21-2018 at 02:43 PM. |
05-22-2018, 01:30 AM | #11 (permalink) | |
Ronin Samurai - Assassin
Join Date: Dec 2011
Location: Fayettenam,Pennsyltucky
Age: 68
Posts: 35,218
Drives: 2011 Nismo GM 6M
Rep Power: 2684438 |
Quote:
__________________
浪人 - 殺し屋 "The Difficult Anytime, The Impossible By Appointment Only" http://www.the370z.com/members-370z-...o-journal.html |
|
05-22-2018, 08:57 AM | #12 (permalink) | |
A True Z Fanatic
Join Date: Aug 2012
Location: NW, AZ
Posts: 9,330
Drives: 10 Nissan 370z Nismo
Rep Power: 2684385 |
Quote:
__________________
Fast Intentions TT Installed and Tuned by Seb at SpecialtyZ 610whp 560tq:|Fast Intentions 3" TT-TDX|SpecialtyZ/Fast Intentions 72 Row Oil Cooler|SZ 6 Puck Clutch & Flywheel|3GsCustoms|Z1|Wavetrac|Hotchkis|Whiteline |Blitz|Fortune Auto 500|Fujimura|SPL|H&R|TK|TWM|RPM Rollbar|Sparco|Next Level Performance|TrackSpec|AeroFlow Dynamics|Pioneer| |
|
05-22-2018, 10:00 AM | #13 (permalink) |
Track Member
Join Date: Apr 2013
Location: Colorado
Posts: 642
Drives: Poor man's Porsche
Rep Power: 542 |
The main thing to consider when choosing spring rates is the tire you will be running and the surface that you drive on most regularly. The springs job is to make sure the tires stay in contact with the road. A lot of the times, a more compliant suspension will be faster than one that is overly stiff. Just food for thought. I would stay away from getting into the 2.3+ hz range unless I was running r compounds on a well groomed track, especially if The car is dual purpose.
|
05-22-2018, 10:13 AM | #14 (permalink) |
A True Z Fanatic
Join Date: Apr 2012
Location: Roswell, GA
Posts: 1,179
Drives: wife crazy
Rep Power: 55 |
is there a way to set this? to me it seems that there is no/very little compression. The only way for me to adjust is the clicks on top, which i have set at 5 clicks from soft, which makes it pretty bouncy but the only way for me to drive, any more stiff and i'm hitting the roof with my head when i hit a bump, i'm not even joking, my butt is doing the compression.
|
05-22-2018, 10:23 AM | #15 (permalink) |
A True Z Fanatic
Join Date: Apr 2012
Location: Roswell, GA
Posts: 1,179
Drives: wife crazy
Rep Power: 55 |
Ok i read the FA install guide doc and preload seems to be very important for compression, so i will watch him redo it to make sure its right. Thanks fam
Last edited by scope22; 05-23-2018 at 06:59 AM. |
Bookmarks |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Spring rate help? | wstar | Track / Autocross / Drifting / Dragstrip | 135 | 07-06-2017 07:51 PM |
Clutch helper spring / Jsolo Spring | jamtinge | Canada | 8 | 12-02-2016 02:31 PM |
Choices, choices... | osbornsm | Other Vehicles | 6 | 03-05-2016 11:30 AM |
Rim choices | rebe945 | Wheels & Tires | 19 | 02-20-2012 11:02 PM |
Rim choices | rebe945 | Wheels & Tires | 5 | 02-15-2012 11:38 AM |