lower kit?

[yaris2010RS]

hey, my friend has a set of springs that he doesn't mind selling to me. the only problem they are for a 95 accord...... any first thoughts as to if they will fit? he's allowing me to test fit them before i pay him, but i hate to go through all the work to have to remove them.......

any help would be greatly appreciated. he said it put his accord down about 2" all around

[yaris2010RS]

bump

[SilverBack]

2" is a huge drop. How stiff? Brand?

[MUSKOKA800]

Accord is a much heavier car. I doubt they will work well even if they do fit.
Do some physical measurements and compare them with your Toyota's springs before wasting your time and effort.

[yaris2010RS]

tein is the brand.... hopefully i will get mesurments tomorrow

[thebarber]

forget the ghetto springs

buy my megan coilovers

[yaris2010RS]

how much? and i was told coilovers are not good

[thebarber]

Originally Posted by yaris2010RS

how much? and i was told coilovers are not good

600CAD picked up in kitchener

not good how/why? i had coilovers all last summer...

btw, mine have never seen snow/salt

if you don't get them by sunday, they're going back on my car (starting ~10am sunday)

[markitect]

First thing you need to verify is the diameter of his springs, The Yaris is 2.5in front and 3.5 in rear (ID).

If those springs match up, the next thing is to determine what they will do to your car. First see if you can find the spring rate for the springs your friend has, and have him measure the height.

First you need to know the corner weights on the spring. I don't know if anyone has published numbers for that, so you would have to figure them out.
The rear is easiest, so while the car is on the ground measure the height of the rear spring, then unbolt the shock and jack the car up and take the spring out, and measure again. The difference between these is the displacement so your corner weight will be about so D(in inches) * spring weight is the corner weight on top of the spring. The rears are 120lb/in.

Now both sides should be about the same so you just need to find the front. That would be a huge pain, so simply take the rear weight*2 and subtract that from the curb weight, then divide the result by 2 to get the front weight.

If someone already has these numbers hopefully they'll be nice and post them.

Now for both the front and back, take the weight you just calculated, and divide by the rate of your friends spring. This is how much they will compress. Now simply subtract that from his uncompressed spring's height, and you will know about how tall the spring should be if you put it on your vehicle.

Now simply compare those numbers to the height of your springs on your yaris, sitting on the ground, and you will find out how much drop/raise you will end up with.

Finally post the results if you do this.

[bobolinko]

[QUOTE=Now simply compare those numbers to the height of your springs on your yaris, sitting on the ground, and you will find out how much drop/raise you will end up with.

Finally post the results if you do this.[/QUOTE]

markitect,
You seem pretty sharp on suspension so I thought I'd ask you, since the SL and Scion XD forums are hacked/dead for now. I have a Yaris HB (Wifey's) and a Scion XD. I want to soften the ride on my XD and have read about Tein lowering sprins having a softer ride. Can that be true? What is your opinion on what I can do to soften the ride. Running 215-40-18 on 35 offset wheels and stock coils. I'm no cornering freak so mushy won't be any problem, since f/way is my dd anyway. Thanks in advance.

Aloha From Hawaii
-bob

[yarrr]

Originally Posted by markitect

First thing you need to verify is the diameter of his springs, The Yaris is 2.5in front and 3.5 in rear (ID).

or backwards of that

Originally Posted by markitect

If those springs match up, the next thing is to determine what they will do to your car. First see if you can find the spring rate for the springs your friend has, and have him measure the height.

First you need to know the corner weights on the spring. I don't know if anyone has published numbers for that, so you would have to figure them out.
The rear is easiest, so while the car is on the ground measure the height of the rear spring, then unbolt the shock and jack the car up and take the spring out, and measure again. The difference between these is the displacement so your corner weight will be about so D(in inches) * spring weight is the corner weight on top of the spring. The rears are 120lb/in.

Now both sides should be about the same so you just need to find the front. That would be a huge pain, so simply take the rear weight*2 and subtract that from the curb weight, then divide the result by 2 to get the front weight.

If someone already has these numbers hopefully they'll be nice and post them.

Now for both the front and back, take the weight you just calculated, and divide by the rate of your friends spring. This is how much they will compress. Now simply subtract that from his uncompressed spring's height, and you will know about how tall the spring should be if you put it on your vehicle.

Now simply compare those numbers to the height of your springs on your yaris, sitting on the ground, and you will find out how much drop/raise you will end up with.

Finally post the results if you do this.

The rest is pretty inaccurate as well. Springs don't compress with a linear rate(i.e. if one inch = 120 lbs then 5 inches != 600 lbs) All that work and measuring and you'd probably be better off with an educated guess.

[yaris2010RS]

lol, well thank u all. my friend has been busy at work and has been unable to mesure them but i'll keep u posted.

barber, thank u for the offer but untill later on in the year i cannot take a $600 dive. lol, but i can't wat to see them on ure car.
he's giving me the springs to me for about $150, that i can afford. lol, and if they fit its another +1

as for coilovers being not so good, i've heard it from ppl who've had them and normal lowering coils. they say coilovers are a pain to adjust all 4 (or at least the front set and back set) the same. also, with the lower u go, the more bouncy the ride is. its not a stiff feel like i'm assuming they wanted.

really, lowering my car is spending money i dont have, but for that price, if it works y not. if it doesn't, well it was worth a shot, lol

Originally Posted by yarrr

the rest is pretty inaccurate as well. Springs don't compress with a linear rate(i.e. if one inch = 120 lbs then 5 inches != 600 lbs) All that work and measuring and you'd probably be better off with an educated guess.

as for u...... lol, u are very wrong (or my prof. doesn't know whats he's talking about or dumbed the topic down) but in my first year (taking electro-mechanical engineering) i took a course of dynamic forces and static forces....and springs are rated in neutons per meter..... it is quite linear.

i could be completly wrong if toyota (and other car companies) manufacture their springs to not be linear but in that case i am not aware

[markitect]

Originally Posted by yarrr

The rest is pretty inaccurate as well. Springs don't compress with a linear rate(i.e. if one inch = 120 lbs then 5 inches != 600 lbs) All that work and measuring and you'd probably be better off with an educated guess.

The new springs won't be linear either, and yes, an educated guess is exactly what that gets you(you should see a few other things it's not accounting for).

Until you get someone to measure the unsprung weight I don't see how you'll get much better, and if anyone ever does that it will probably be a race-prepped one.


bobolinko:

The xD is basically the same as the yaris, but it's a heavier. So if you look at the spring rate page on the microimage forums you should get an idea of what is softer. But honestly I would get some 16" wheels, it will probably make more of a difference.

[yarrr]

Originally Posted by yaris2010RS

as for u...... lol, u are very wrong (or my prof. doesn't know whats he's talking about or dumbed the topic down) but in my first year (taking electro-mechanical engineering) i took a course of dynamic forces and static forces....and springs are rated in neutons per meter..... it is quite linear.

i could be completly wrong if toyota (and other car companies) manufacture their springs to not be linear but in that case i am not aware

I guess I could have been more clear. There are springs out there that compress at a linear rate. Car springs do not, they basically have one spring rate to settle the car at ride height, then the spring rate goes up if you compress it more. You can tell just by looking at the way the springs are - differing coil diameters and distances between coils. If you still don't believe me you'll see when you swap springs. You can compress the first inch or two by hand. If that spring rate stayed linear the whole way through the spring it would be fully collapsed with 300 lbs on it.. lol

Originally Posted by markitect

I don't see how you'll get much better,

You won't, that's why people just buy springs made for their car.