I want to level my 2002 Suburban.

[electro]

Simple front end lift using a kit like this.

http://www.procompusa.com/productli...ift/Drop+Height+(in.)_PQ=2.5#filter_qualifier

So in the kit are keys and shock extension brackets. Are the screws for adjusting the keys? With stock keys, how come I am not able to obtain the height? I mean what makes these keys able to do that?
Raising your truck using the stock keys is generally thought to be a bad idea because it wears out front end components a little faster and generally results in poor ride quality. How is it that changing the keys to these pro comp ones are going to give me the height yet not decrease my overall ride quality?

By turning the stock keys up you are effectively putting more torque on the torsion bar right? Which stops it from bending and flexing which is where the poor ride quality comes from. Is this understanding correct? What makes these keys different? Or am I still going to experience a decrease in ride quality with this ProComp kit?

I just want to level the truck, not interested in lifting it.

Thanks for reading.

 

[electro]

So I thought a little harder and had a conversation with a good friend today about the above.

I've learned that the keys more or less rotate the torsion bar thus acting on the Lower Control Arm and in turn changing the angle of said control arm. Turning the key screw in begins to angle the Lower Control Arm down towards the knuckle or up towards the hood depending which way your looking at it.

The decrease it ride quality comes from the shock being extended too much after being use for so long at a certain setting.

Would anyone agree or care to add some thoughts? OR FACTS?

 

[01Konvict]

yes the torsion bar resistance increases but the ride quality does not come from the extended shock. The ride quality is effected by the keys and stiffness on torsion bars. The shock is minimal variance to the ride quality.

 

[electro]

How do you figure that the torsion bar resistance changes?

All it does it rotate counter clockwise thus acting on the lower control arm.. The torsion bar doesn't see any added torque unless the lower control stops moving.


Sent from my iPhone using Tapatalk

 

[Jewel or Jalopy]

You're increasing or decreasing the stiffness of the torsion bar when you adjust the screws. Stiffer spring = less deflection for a given weight = higher ride height and rougher ride.

 

[electro]

You're increasing or decreasing the stiffness of the torsion bar when you adjust the screws. Stiffer spring = less deflection for a given weight = higher ride height and rougher ride.

Would I be wrong to say that you are not increasing the stiffness of the torsion bar until you raise the lower control arm to its upper most angle? But than again you would bottom out the torsion key adjusting screw before you "Maxed" out the LCA.

By turning the torsion bar key you are just rotating the key which is rotating the bar which is hexed into the LCA. So when the bar rotates it acts on the LCA and starts to angle it up which is where the increased ride height comes from.

I mean if the truck got heavier from a snowplough or something on the front than I could see the torsion bars increasing in stiffness as they are compressed further with the addition of front end weight.

 

[frostt3ch]

Mine

Keys and 2 spacers.

 

[drewxjn]

What size tires you runnig?

 

[frostt3ch]

33's

 

[oreowizard98]

Keys and 2 spacers.

Which keys are using?