supra experts needed suspension question

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.

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.

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

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.

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

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 ????

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.

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

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.

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

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.

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?

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.

I stand corrected

anti-roll bars is what you want