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

iamtheyi · 02-26-2011, 12:49 AM

I was curious as to what spring rate is the best for an S14. I'm gonna get a set of Fortune Auto's and I'm pretty torn between 8kg/6kg and 9kg/7kg. Let me know what you guys think. This'll be for a DD and track once in awhile. Maybe once a month?

h815 240sx · 02-26-2011, 07:59 AM

9k/7k would be fine

codyace · 02-26-2011, 09:04 AM

8/6 if you're street driving.

jr_ss · 02-26-2011, 09:43 AM

Generally lower spring rates are for street applications, with higher being for track applications. If you want your teeth rattled out of your head, 9/7 will do just fine.

iamtheyi · 02-26-2011, 10:52 AM

well I was having a discussion with a friend and he said that the 8/6 was too soft for a s14 seeing how it was heavier or something like that. I know the pbm's which are 10/8 would rattle my car is much my back would break but I'm guessing the 9/7's are the same?

codyace · 02-26-2011, 02:10 PM

While spring rate is somewhat dependent on weight...in general 8k/6k is perfect for a street s14, especially with a low end damper.

Really spring rate should always be left on the softer side if you street drive it. If it saw 80/20 track/street then run more sprin, but it sounds like you have a 5/95 track/street car.

02-26-2011, 12:49 AM	#1
iamtheyi Nissanaholic! Join Date: Mar 2008 Location: Brea, CA Age: 30 Posts: 2,252 Trader Rating: (21) Feedback Score: 21 reviews	Spring rate I was curious as to what spring rate is the best for an S14. I'm gonna get a set of Fortune Auto's and I'm pretty torn between 8kg/6kg and 9kg/7kg. Let me know what you guys think. This'll be for a DD and track once in awhile. Maybe once a month? __________________

02-26-2011, 09:04 AM	#3
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 36 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	8/6 if you're street driving. __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

02-26-2011, 09:43 AM	#4
jr_ss Post Whore! Join Date: Dec 2005 Location: Pa Posts: 6,052 Trader Rating: (34) Feedback Score: 34 reviews	Generally lower spring rates are for street applications, with higher being for track applications. If you want your teeth rattled out of your head, 9/7 will do just fine. __________________ My SR20VET

02-26-2011, 10:52 AM	#5
iamtheyi Nissanaholic! Join Date: Mar 2008 Location: Brea, CA Age: 30 Posts: 2,252 Trader Rating: (21) Feedback Score: 21 reviews	well I was having a discussion with a friend and he said that the 8/6 was too soft for a s14 seeing how it was heavier or something like that. I know the pbm's which are 10/8 would rattle my car is much my back would break but I'm guessing the 9/7's are the same? __________________

02-26-2011, 02:10 PM	#6
codyace Post Whore! Join Date: Dec 2004 Location: Poconos, PA Age: 36 Posts: 8,030 Trader Rating: (58) Feedback Score: 58 reviews	While spring rate is somewhat dependent on weight...in general 8k/6k is perfect for a street s14, especially with a low end damper. Really spring rate should always be left on the softer side if you street drive it. If it saw 80/20 track/street then run more sprin, but it sounds like you have a 5/95 track/street car. __________________ *Want Air Conditioning in your SR20 Swapped car? Check out www.sr20acbrackets.com for more information! Quest Alternator Conversions for SR20!* Check my Group Buy! Tired of lousy internal gates? Go external wastegate with one of my manifolds, Check out my group buy

02-26-2011, 07:59 AM	#2
h815 240sx Zilvia Junkie Join Date: Mar 2008 Location: Chicago Age: 32 Posts: 347 Trader Rating: (2) Feedback Score: 2 reviews	9k/7k would be fine

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