Yeah this is something I confuse myself with or just cant fully grasp, but is spring rates. I want to dig deeper into suspension information myself because on of the first things to be done on the Talon is new struts and some springs... Mine are all blown to hell and what use is snail power with poor handling and braking due to poor suspension? But im trying to figure out what some good spring rates would be for a weekend warrior track car that gets driven on the skreetz of Junction everyday? And my main track duties will be in a straight line. I have been looking around at different option but damn if I cant understand what a good spring rate would be for street and some 1320 abuse...

Good luck here. You will school me on this subject I am sure! The only thing I know is most aftermarket setups are adjustable, so you can have a setup to help you in the 1320, one for autoX/road racing, and one for daily driving that isnt so harsh. Granted it will be a compromise between them all, but at the level we are looking to play in, I dont think we would notice the compromise too much.

See I have the theory of adjustable shocks or coilovers down. I mean you are basically adjusting for how quick you stop that spring oscillation and how stiff or soft your compress and rebound. But some sprng rates I just dont get... Is it oscillations per minute or second? A compression (stiff/soft) rate? hmmm onward to some searching I say! Well found a simple definition... Expressed usually in lbs./in. it is the force used to compress a linear spring one inch. Ok so the higher the number ther more harsh of a ride you will have. Now we go into the theorey of what rates will be best for me... Onward to yet more research!!!

Oh, that much I knew. The higher the number the harder you have to push to compress the spring. This doesnt have much to do with the rebound or ocsillations though. That is done through the damper, not the spring. For drag racing, look at setting up a suspension for antisquat characteristics.

Yeah that I did know too... I was gonna take a look into more of antisquat. I think where I get confused about spring rates is when they use a metric system vs the english system to rate them. Ya the shock is what stops the spring oscillation. Megan seems to have a nice set of street/ light track duty springs...

What are the metric units? I only know lbs/inch.

I want to say kilograms... I would have to search but I think that is where I confuse myself. The abbreviation KGf comes to mind...

in metric its KG/mm

Have you looked into KYB AGX adjustable dampers? They can be adjusted from 1 to 8 in a matter of minutes,  1 is the softest and 8 is the hardest. Most people run the fronts around 3 and the rears around 5 for a nice ride quality for daily use.  It is really easy to frim them up for track use.

Your part numbers would be 741042 for the front and 741020 for the rear.

http://www.kyb.com/products/index.php

Wow, didn't realize this was a year old