supra experts needed suspension question

[little num]

Searching the last hour or so and cant find what im after.

Basically we have 4 supra's in our unit, now what we are trying to do is compare the springs against each other to see the differance between N/A and TT, problem is all the springs have different colour markings, some have WHITE + ORANGE, then BLUE + WHITE, then just WHITE, now these are all front springs so can some 1 shed some light on what colours mean what.

[Chris Wilson]

In my experience you need to test them on a spring rate tester. the colour code range is vast and not documented in anything I have found. I mark them up as sets when they come off a known car type and ignore the codes. LH and RH differ, obviously front and rear, NA, TT, VVTi, Euro, UK, US. A minefield of subtle changes on destination and spec.

[Kirk]

I thought all the differences were just the spring rates and stiffness themselves rather than the actual springs appearance

[little num]

ok that would make sense to why we have so many strange colours.

So does it make a big differance if you fitted the passenger side on the drivers and oposite's.

Also fitting TT springs to an N/A, how would this effect the handling of the car for trackdays.

[Kirk]

Well for one the front end would sit higher i would of thought as there isnt as much weight on the nose like on the TT but thats all i got, my knowledge of spring rates etc is limited

[little num]

Well for one the front end would sit higher i would of thought as there isnt as much weight on the nose like on the TT but thats all i got, my knowledge of spring rates etc is limited

 

But then would it handle better due to the springs being stiffer so in theory less body roll ????

[Chris Wilson]

Very little difference L to R. TT front ones are quite a bit stiffer than N/A ones, rears are within 50 lbs. ins. so no vast difference. UK are softer than J-Spec.

[JustGav]

Well for one the front end would sit higher i would of thought as there isnt as much weight on the nose like on the TT but thats all i got, my knowledge of spring rates etc is limited

 

And they do sit very odd... I fell fowl to that in the past

[little num]

its strange you say how high the NA will sit with TT springs on, we have a NA with original springs and the measurments from centre of hub is the same as the NA with TT springs fitted.

[JustGav]

its strange you say how high the NA will sit with TT springs on, we have a NA with original springs and the measurments from centre of hub is the same as the NA with TT springs fitted.

 

Don't forget about the extra weight of the components

[Kirk]

But then would it handle better due to the springs being stiffer so in theory less body roll ????

 

In theory I would of thought so but a spring alone isn't going to decrease body roll massively. Better shocks on the other hand would probly be more benificial and maybe a stiffer set of anti roll bars.

Edited March 29, 2010 by Kirk (see edit history)

[Ark]

its strange you say how high the NA will sit with TT springs on, we have a NA with original springs and the measurments from centre of hub is the same as the NA with TT springs fitted.

 

If they're the original springs, mightn't they be a bit saggy by now?

[Chris Wilson]

Springs do a have big effect on body roll. Dampers only affect the rate that body roll is accrued, in a steady state cornering condition on a smooth road they won't affect ultimate roll angle at all.

[Kirk]

I stand corrected

[Guest Rapture]

anti-roll bars is what you want