Coilover questions.

black pearl

Hooked
So I’m new to coilovers themselves. I’ve always had coils or leaf springs. So I need a little bit of education on them. First what do I do with the two lock rings inside the coils, if anything. Can I move them to get more preload? On that same note. If I were to get a stiffer spring rate for the rear (she’s got a big ass). What one would I be looking at. I see the top spring is the one coming down the most. These are my first questions, I’m sure I’ll have more.
 

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Bierpower

Hooked
The collars inside adjust where in your travel your spring rate changes. The ring between your two springs hits that and then only the one spring is working after that.

Say you have a 250/250 spring combo. That's gives you an effective spring rate of 125#/in because at 250# each spring will compress an inch resulting in 2 inches. So half that to 125#/in

Once you hit the changeover collar you are now on a single spring at 250#/in. That way when you hit big bumps the springs are stiffer to prevent bottoming out.

With where they are set now I would guess they've never been engaged.
 

black pearl

Hooked
The collars inside adjust where in your travel your spring rate changes. The ring between your two springs hits that and then only the one spring is working after that.

Say you have a 250/250 spring combo. That's gives you an effective spring rate of 125#/in because at 250# each spring will compress an inch resulting in 2 inches. So half that to 125#/in

Once you hit the changeover collar you are now on a single spring at 250#/in. That way when you hit big bumps the springs are stiffer to prevent bottoming out.

With where they are set now I would guess they've never been engaged.
Alright that makes sense.
I haven’t even driven the Jeep yet since the install. So every thing but the rear preload is from factory.
 

black pearl

Hooked
Just under torquing the bolts and noticed a slight drip of oil from one rear coilover.
 

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black pearl

Hooked
So looking at the spring rates. The rear has (top/bottom) 200/250. The fronts are 250/250. I’m going to bring the transfer rings down and see how it sets basically only the bottom spring. But likely will get another 250 rate for the top of the rears.
 

CalSgt

Hooked
If you set them so there is 1/2" - 3/4" of travel before the crossover ring hits (at ride height) it will let the suspension compress a little at the lighter spring rate before getting stiff. My coilovers ride stiffer than my EVO plush rides did anyway.
 

black pearl

Hooked
If you set them so there is 1/2" - 3/4" of travel before the crossover ring hits (at ride height) it will let the suspension compress a little at the lighter spring rate before getting stiff. My coilovers ride stiffer than my EVO plush rides did anyway.
What I’m seeing with mine and maybe it’s totally normal. I only have about 3-4 inches of shock rod showing at ride hight. Was trying to get it to set with a little more available travel.
These are a world of difference from taraflex springs!
 

black pearl

Hooked
So maybe I’m over thinking this (I tend to do that). I just measured the available up travel on the rear, in relation to the bump stops. The rear coilovers will bottom out a half inch before full compression, of the bump stop.
 

black pearl

Hooked
Ok so looking at springs I’m trying to figure between the 250 or 300. I don’t want to have to buy another set if one is too soft. 200 for the upper rear spring is way to soft for my use. Now would it be silly to run a 300/250 combo, with the 300 on top?
 

CalSgt

Hooked
Ok so looking at springs I’m trying to figure between the 250 or 300. I don’t want to have to buy another set if one is too soft. 200 for the upper rear spring is way to soft for my use. Now would it be silly to run a 300/250 combo, with the 300 on top?
I think Polyperformance has a spring trade program, if you buy your springs from them they will trade them out for equal value springs if you don't like them & they are still like new condition. Ive never done it so not exactly sure how it works...
 

black pearl

Hooked
I think Polyperformance has a spring trade program, if you buy your springs from them they will trade them out for equal value springs if you don't like them & they are still like new condition. Ive never done it so not exactly sure how it works...
I’ll check into that.
I’ve thought about it and it doesn’t seem like a good idea to run a 300 over a 250. I’m going to get some 250s. If they are to light I’ll get 300s and run them on the bottom with 250 on top.
 

Seahawkfan

Hooked
My situation was not enough thread on the shock body to set those nuts up to do anything. Thier just in there now scratching springs. I did turn my sliders over.
 
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