i have a set of ground control i bought used. don't knoe which one goes in the front and which one in the back. these are what the springs say.
1)GC180.64.44
2)GC200.64.58

which one goes in the front and which one in the rear?

 

the springs that are real close together at the top are the rears and the ones that are spaced further apart at the top are the fronts.

 

they all look the same except that one is 8" and the other one is 7".

 

the 7'' one should go in the back. What are the spring rates on each? It should say it on there, IIRC.

 

kewl, so the shorter one should go in the back. i have no idea where it says spring rates. this is all it says

frop top to bottom:
Ground control

Eibach 148031

GC180.64.44

other one:
Ground control

Eibach 162886

GC200.64.58

 

call the GC customer service line. Talk to a tech.

 

It doest matter what spring goes in front or back, but typically 8" in front 7" in back. What really matters is that you get the numbers converted so you can understand what you have. So here we go.
180.64.44 is 700.250.250
200.64.58 is 800.250.330
Now your probably going to ask what the new numbers mean. First number is length in inches of the springs. Second number is inside diameter in inches and the last number is the spring rate.

 

shorter spring in the back

 

this reallie helps, so softer spring rates in the back and stiffer in the front.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lilo_goki &raquo;</TD></TR><TR><TD CLASS="quote">this reallie helps, so softer spring rates in the back and stiffer in the front.</TD></TR></TABLE>

i would say that it doesnt matter. it is how you want your car to handle.

 

good info

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GSR CRX &raquo;</TD></TR><TR><TD CLASS="quote">

i would say that it doesnt matter. it is how you want your car to handle.</TD></TR></TABLE>

It does matter. Your not going to put a softer/shorter spring in the front. You need a stiffer spring to make up the difference for the weight of the motor.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mikeycivic &raquo;</TD></TR><TR><TD CLASS="quote">

It does matter. Your not going to put a softer/shorter spring in the front. You need a stiffer spring to make up the difference for the weight of the motor.</TD></TR></TABLE>

Not really. You can put a stiffer spring in the back. It's done all the time to make the car handle in a certain way. That's the way I roll. Err...rolled. I dont have the car anymore lol.

The only thing is that the spring is shorter. But if you raised up the front perch more, you'd be fine. They're probably MEANT to go 8'' (330lb/in) front and 7''(250 lb/in) rear, though. That's probably how they were sold.

 

yeh you dont NEED to per say but if he's looking for the "standard" way, then shorter spring in the back

 

It does matter front to back. I installed a set with the front's in the rear etc.. I had to really crank the front and lower the back to try and balance them out. I swapped them back and the rears sagged from being up front for a short time.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by johnmay19 &raquo;</TD></TR><TR><TD CLASS="quote">It does matter front to back. I installed a set with the front's in the rear etc.. I had to really crank the front and lower the back to try and balance them out. I swapped them back and the rears sagged from being up front for a short time.</TD></TR></TABLE>

 

it feels better having the back softer and having the front stiffer.