Jump to content
SAU Community

Recommended Posts

  • Replies 378
  • Created
  • Last Reply

Top Posters In This Topic

Coil OD = 60/60 mm

Wire OD = 10 mm

# of Coils = 7.5 turns

a lil ruff but best i cud do at the time

thanks :thumbsup:

60 mm OD = 40 mm ID, I have never seen a spring that small.

If you meant 60 mm ID, then;

Spring rate = 290 lbs/inch (5 kg/mm)

Cheers

Gary

yep my bad ment ID

looks like i need harder springs, still better then the stockies tho :laugh:

OK front rate for road tyres, a bit under done for R type tyres though.

Cheers

Gary

  • 3 weeks later...

Hey Gary looks like your the man for this sort of stuff

could you have a go at these coilovers??

Rear:

lower coil OD: 95

upper coil OD: 110

wOD: 13.5

no. of turns: 7

front:

lower coil OD: 100

upper coil OD: 120

wOD: 15

no. of turns: 6.25

cheers

Hey Gary looks like your the man for this sort of stuff

could you have a go at these coilovers??

Rear:

lower coil OD: 95

upper coil OD: 110

wOD: 13.5

no. of turns: 7

Spring rate = 350 lbs/inch (6 kg/mm)

front:

lower coil OD: 100

upper coil OD: 120

wOD: 15

no. of turns: 6.25

Spring rate = 500 lbs/inch (8.7 kg/mm)

cheers

OK spring rates for slicks, too high for everything else.

Cheers

Gary

Front:

Coil ID = 104/90 mm

Wire OD = 12 mm

# of Coils = 9.8 turns

Spring rate =

Rear:

Coil ID = 99/71 mm

Wire OD = 12 mm

# of Coils = 9.4 turns

Spring rate =

I believe they're Nismo low springs, not sure though...

Cheers.

Edited by _Scotty_
Front:

Coil ID = 104/90 mm

Wire OD = 12 mm

# of Coils = 9.8 turns

Spring rate = 120 lbs/inch (2 kg/mm)

From that low spring rate I assume that they are progressive. To get the actual (in use) spring rate you need to look at the coils, there should be some very closely wound together. They are sacrificial coils, they collapse onto each other as soon as the weight of the car is applied. Those coils need to be left out of the calculation.

Otherwise check the wire diameter.

Rear:

Coil ID = 99/71 mm

Wire OD = 12 mm

# of Coils = 9.4 turns

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

These may be progressive as well.

I believe they're Nismo low springs, not sure though...

Cheers.

Coil ID = 146mm

Wire OD = 12 mm

# of Coils = 5 turns

Spring rate = Spring rate = 95 lbs/inch (1.7 kg/mm)

Esplier springs apparently.

Is that a parrallel coil, ie; 146 mm all the way?

Cheers

Gary

  • 2 weeks later...
Front:

Coil ID = 104/90 mm

Wire OD = 12 mm

# of Coils = 9.8 turns

Spring rate = 120 lbs/inch (2 kg/mm)

From that low spring rate I assume that they are progressive. To get the actual (in use) spring rate you need to look at the coils, there should be some very closely wound together. They are sacrificial coils, they collapse onto each other as soon as the weight of the car is applied. Those coils need to be left out of the calculation.

Otherwise check the wire diameter.

Rear:

Coil ID = 99/71 mm

Wire OD = 12 mm

# of Coils = 9.4 turns

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

These may be progressive as well.

Correct, they are progressive, so how about:

Front:

Coil ID = 104/90 mm

Wire OD = 12 mm

# of Coils = 5.5 turns

Spring rate =

Rear:

Coil ID = 99/71 mm

Wire OD = 12 mm

# of Coils = 7.4 turns

Spring rate =

100_2963.jpg

Any idea if these are in fact Nismo springs?

Cheers Gary.

Correct, they are progressive, so how about:

Front:

Coil ID = 104/90 mm

Wire OD = 12 mm

# of Coils = 5.5 turns

Spring rate = 250 lbs/inch (4.4 kg/mm)

Rear:

Coil ID = 99/71 mm

Wire OD = 12 mm

# of Coils = 7.4 turns

Spring rate = 230 lbs/inch (4.1 kg/mm)

Any idea if these are in fact Nismo springs?

Cheers Gary.

They are fairly sensible rates, which Nimso do occasionally.

Cheers

Gary

  • 2 weeks later...

Hey SK, springs in my old tanabe coilovers which I am thinking of putting back in measure like this:

Front:

ID: 62mm

Wire OD: 11.5mm

# Turns: 6.9 (2 sacrificial coils i think)

Rear:

ID: 61mm

Wire OD: 11mm

# Turns: 7.8 (2 sacrificial coils i think)

Some measurements seem odd but with digital callipers its difficult to get an repetitive reading, it seems that with the fronts they were thicker in the middle then the top and bottom but only by .5 mm so I just ignored it. Also the top and bottom of the coil are manipulated flat (2 sacrificial coils i think) so I don’t know if that affects anything but I would say most coilover springs are like that. They also have the little helper spring but as mentioned earlier that holds the main spring in and doesn’t affect the spring rate?

Do you know anything about the tanabe coilover shocks? They are height adjustable but not damper adjustable and are from the sus tec pro range (many years old).

Thanks in advance!

Edited by vespa
Hey SK, springs in my old tanabe coilovers which I am thinking of putting back in measure like this:

Front:

ID: 62mm

Wire OD: 11.5mm

# Turns: 6.9 (2 sacrificial coils i think)

490 lbs/inch (8.7kg/mm)

Rear:

ID: 61mm

Wire OD: 11mm

# Turns: 7.8 (2 sacrificial coils i think)

370 lbs/inch (6.7kg/mm)

Some measurements seem odd but with digital callipers its difficult to get an repetitive reading, it seems that with the fronts they were thicker in the middle then the top and bottom but only by .5 mm so I just ignored it. Also the top and bottom of the coil are manipulated flat (2 sacrificial coils i think) so I don’t know if that affects anything but I would say most coilover springs are like that. They also have the little helper spring but as mentioned earlier that holds the main spring in and doesn’t affect the spring rate?

Do you know anything about the tanabe coilover shocks? They are height adjustable but not damper adjustable and are from the sus tec pro range (many years old).

Thanks in advance!

Spring rate is obviously way too high for road work, even too high for track work unless you are using slicks. The best (cost effective) recommendation I can give is to stick the rear springs in the front and buy a set of rear springs around 225/250 lbs/inch (4 to 4.5 kg/mm). Tanabe shocks are OK in a typical Japanese way, not good but OK. Try the spring swap and see how you like it.

Cheers

Gary

  • 2 weeks later...
rear coil:

top 100

bottom 80

wire 10

turns 9

thanks

Are the top and bottom measurements the inside diameter? If so 80 lbs/inch (1.4kg/mm), which is very low.

Are they progressive coils? A number of coils that collapse onto one another as soon as the weight of the car is applied to them? Hence reducing the number of effective coils.

Usually around 4 coils, in which case the rate would be 180 lbs/inch (3.2 kg/mm)

Cheers

Gary

Can you knock these out for me, measurements may be off a touch as did them with shocks still on car & there was minimum room...

Note: springs are progressive, top 5 coils are wound tight, others are normal.

Fronts

Lower O.D. = 89.3mm

Upper O.D. = 89.3mm

Wire thickness = 12mm

No. Coils = 11.125

Rears

Lower O.D. = 85.6mm

Upper O.D. = 87mm

Wire thickness = 11mm

No. Coils = 11.125

thanks heaps!

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Similar Content

  • Latest Posts

    • Yeah i found that alot of parts can be wrong or "very" hard to get the real right one. I already bought some brakes years ago on me "old" GT calipers and they were wrong too 😄  I told them too. Even send them pictures...but they said "EBC catalogue has them on my car... So i dont know what their answer will be. I call monday them and let them know that they are really not on my car. If they were they would be already on a car...
    • Welcome to Skyline ownership. Yes, it is entirely possible parts websites get things wrong. There's a whole world of inaccuracies out there when it comes to R34 stuff (and probably 33 and 32). Lots of things that are 'just bolt on, entirely interchangable' aren't. Even between S1 and S2 R34's. Yes they have a GTT item supposedly being 296mm. This is incorrect. I would call whoever you got them from and return them and let them know the GTT actually uses 310mm rotors. Depending on where you got them from your experience and success will obviously vary.
    • Hi...a bit a "development" on the brakes. I spoke to the guys where i get brakes from...and they are saying that 296mm EBC are for R34 GT-T. I then went to their site: https://www.ebcbrakes.com/vehicle/uk-row/NISSAN/Skyline (R34)/ and search for my car(R34 GT 1998 - it has GTT brakes) and it show me this USR1229 number and they are rly 296mm rotors... So now iam rly confused... The rotors i have now on the car are 310mm asi shown... So where is the problem? Does the whole EBC got it wrong or my calipers are just...idk know what?  
    • Oh What the hell, I used to get a "are you sure you want to reply, this thread is XX months old" message. Maybe a software update remove that. My bad.
    • This is a recipe for disaster* Note: Disaster is relative. The thing that often gets lost in threads like this is what is considered acceptable poke and compromise between what one person considers 'good' looks and what someone else does. The quoted specs would sit absurdly outside the guards with the spacers mentioned and need  REALLY thin tyres and a LOT of camber AND rolling the guards to fit. Some people love this. Some people consider this a ruined car. One thing is for certain though, rolling the guards is pretty much mandatory for any 'good' fitment (of either variety). It is often the difference between any fitment remotely close to the guards. "Not to mention the rears were like a mm from hitting the coilovers." I have a question though - This spec is VERY close to what I was planning to buy relative to the inboard suspension - I have an offset measuring tool on the way to confirm it. When you say "like a mm" do you mean literally 1mm? Or 2mm? Cause that's enough clearance for me in the rear :p I actually found the more limiting factor ISNT the coilover but the actual suspension arms. Did you take a look at how close those were?
×
×
  • Create New...