How Do I Tell What My Spring Rates Are?

[Sydneykid]

c'mon gary. Put me out of my misery! I'm dying to know!!! hehe.

thanks mate.

Sorry, I am not at my engineering computer, I will do it as soon as I get home tonight.

cheers

[Beer Baron]

thanks mate. very curious to see what they are.

[Beer Baron]

[Beer Baron]

yo yo ma!

[Sydneykid]

Coil ID = 100/105 mm

Wire OD = 13 mm

# of Coils = 9.5/10 turns

Spring rate = ???

Thanks ...

135 lbs per inch (2.4 kg/mm) if it 9.5 turns and 125 lbs per inch (2.2kg/mm) if its 10 turns.

Cheers

[Sydneykid]

Hi gary,

I've got one for you.

Rears:

coil OD 91mm

wire OD 13mm

coils 9.4

length (lightly captive) 247mm

Fronts:

coil OD 90mm

wire OD 13mm

coils 7.75

length (lightly captive) 190mm

thanks very much Gary.

Sorry for the delay, I haven't been at my home office PC since last Thursday.

Not too bad;

Rears are 185 lbs per inch (3.3 kg/mm)

Fronts are 245 lbs per inch (4.4 kg/mm)

Cheers

Edited October 16, 2006 by Sydneykid

[Beer Baron]

woah! that is a long way off what i thought. maybe i measured something wrong, but i'm pretty sure i wasn't legless when i measured.

thanks mate.

[Sydneykid]

woah! that is a long way off what i thought. maybe i measured something wrong, but i'm pretty sure i wasn't legless when i measured.

thanks mate.

OK, ignore that. I just noticed you measured coil OD not ID. I will redo them tonight, sorry.

cheers

[Beer Baron]

thanks mate I was too lazy to dissasemble so measured OD. they are not tapered.

[Beer Baron]

I see you watching gary

[Sydneykid]

Hi gary,

I've got one for you.

Rears:

coil OD 91mm

wire OD 13mm

coils 9.4

length (lightly captive) 247mm

Fronts:

coil OD 90mm

wire OD 13mm

coils 7.75

length (lightly captive) 190mm

thanks very much Gary.

Lets try that again, using the correct ID this time

Rear = 440 lbs per inch (7.9 kg/mm)

Front = 565 lbs per inch (10.1 kg/mm)

My suggestion for a cheap fix, stick the rears in the front and buy some 250 lbs per inch (4.5 kg/mm) rears.

Cheers

[Beer Baron]

thanks gary, you are a star

[SkylineGTT25]

Gary, couple more please -

Coil ID = 102/88.5 mm

Wire OD = 12 mm

# of Coils = 6.1 turns

Spring rate = ???

Coil ID = 102/92 mm

Wire OD = 13 mm

# of Coils = 8.9 turns

Spring rate = ???

Coil ID = 99/68 mm

Wire OD = 12 mm

# of Coils = 7.25 turns

Spring rate = ???

Thanks

[Sydneykid]

Gary, couple more please -

Coil ID = 102/88.5 mm

Wire OD = 12 mm

# of Coils = 6.1 turns

Spring rate = 225 lbs per inch (4kg/mm)

Coil ID = 102/92 mm

Wire OD = 13 mm

# of Coils = 8.9 turns

Spring rate = 170 lbs per inch (3kg/mm)

Coil ID = 99/68 mm

Wire OD = 12 mm

# of Coils = 7.25 turns

Spring rate = 245 lbs per inch (4.4kg/mm)

Thanks

cheers

[SkylineGTT25]

Cheers Gary, thankyou !

[Bl4cK32]

Coil ID = 66mm / 96mm

Wire OD = 13mm

# of Coils = 8.5 turns

Just a set of std fronts for an r32. Just like to know what they are rated at

[Sydneykid]

Coil ID = 66mm / 96mm

Wire OD = 13mm

# of Coils = 8.5 turns

Just a set of std fronts for an r32. Just like to know what they are rated at

275 lbs/inch (4.9 kg/mm)

Which isn't standard R32GTR front, maybe check the dimensions again.

cheers

[Bl4cK32]

r32 gtst springs they are. The previous owner had them on my car to put the car at std height.

What would this pair be good for? (besides raising the car up )

[Sydneykid]

r32 gtst springs they are. The previous owner had them on my car to put the car at std height.

What would this pair be good for? (besides raising the car up )

That's an OK front rate for a GTR that sees a bit of track work, would need some decent shocks to control it. From what you are saying the height might be the problem. Some Bilsteins with the additional circlip grooves would handle the rate and then the height could be fixed using the lower grooves. But the Whiteline springs are only $144 a pair on the Group Buy and they are the right rate and height.

cheers

[insanity]

I have two sets of springs for you to check out please.

First set:

Front: Coil ID: 116mm

Wire OD: 13mm

# of coils: 6.5

Rear: Coil ID: 90mm

Wire OD: 13mm

# of coils: 8.125

second set:

Front: Coil ID: top 103mm - bottom 106mm

Wire OD: 12mm

# of coils: 6.5

Rear: Coil ID: top 70mm - bottom 65mm (this spring starts small, tapers out, then tapers in again)

Wire OD: 12mm

# of coils: 8.8

I appreciate your time. Hope to hear from you soon.

Regards,

Beau