In my search I have come up with:

Grand Vitara
Cal-Mini
Jeep TJ front
Saturn LS rears (Jim Mazolla's 2dr / mentioned in the 9" lift write up)

What other applications are out there.  The "U-pull It" is loaded to the gills with rear coil sprung soccer mom rides.  From import wagons to minivans what else is close.

Also in my study of the coil I have learned tha the spring rate is generally determined by the diameter of the wire & number of wraps.  

What is the rating of the stock rear coils?  150lb. 170lb. ect.  
I'd assume this is the weight necessary to compress the coil 1 inch?  


Lots of questions?  

I have the GV coils (set Of 4) but they look a little short...  I will take a pic once I get all 8 out side by side.

In my search I have come up with:

Grand Vitara
Cal-Mini
Jeep TJ front
Saturn LS rears (Jim Mazolla's 2dr / mentioned in the 9" lift write up)

What other applications are out there.  The "U-pull It" is loaded to the gills with rear coil sprung soccer mom rides.  From import wagons to minivans what else is close.

Also in my study of the coil I have learned tha the spring rate is generally determined by the diameter of the wire & number of wraps.  

What is the rating of the stock rear coils?  150lb. 170lb. ect.  
I'd assume this is the weight necessary to compress the coil 1 inch?  


Lots of questions?  

I have the GV coils (set Of 4) but they look a little short...  I will take a pic once I get all 8 out side by side.

Since you have a yard to choose from, measure yours, inside and outside diameters, how it mounts to the upper and/or lower mounts, wire diameter, etc. Then if you could, go weigh the back half (with you in driver's seat) at a truck stop. Before you take the stock coils out, you can measure the 'load' length, then remove them, and measure the 'unload' length. Knowing the difference in length, then the weight (assume 1/2 of total rear weight from truck scales), you can determine the spring rate. Take this if you need it.

Easier way, talk to the yard. Ask if you could take a few to many coils 'near' same overall size of the stock Trackick to test as usable in your project. You may have to leave a deposit, but at least you can swap out coils for testing purposes. Once you configure something you like, return the others and get your deposit back.

If you are looking for a simple coil for lifting the back of your Trackick, I'd first work on the front as this is the 'limiter' of your lift. The a-arm IFS with the cv's is the limiter for your travel. The operating angles of the cv's is what you need to be concerned with. Once you get the front completely done (compression/extension), you 'level' out the back for the lift, then configure for the shock travel in the rear.

The operating angles of the cv's is what you need to be concerned with.

The travel (and hence cv angles) is limited by the front struts. With longer springs you can fit 2" spacers to the top of the struts which increases travel by over 40% with no problems. If you just fit longer springs you will lose wheel droop which can have a very detrimental effect on handling both on and off road.