03 Z71 Tahoe with 4" RC NTD lift still rides kinda rough

[76Nick]

Ok guys so as talked about in a previous post, I installed a 4" Rough Country NTD front lift for a Silverado on my 2003 Tahoe Z71. I went from a 3" torsion key/spacer lift. I liked the ride height but the ride quality was trash as you all know. I really hoped that a NTD lift would give me closer to factory ride quality but that doesn't seem to be the case. Truck has 2" torsion keys (thats what my truck came with) but they aren't cranked. If I loosened the bolts any more there would be no tension at all on the keys. Truck also has tubular 2-4" lift upper control arms I put in when I did the 3" torsion lift. Currently using the RC n3 front shocks. Has all new ball joints, wheel bearings, tie rods. 33x12.50 18" tires. The ride quality isn't as bad as 3" torsion keys but its still pretty bumpy and more rough than it should be. Maybe due to the 2" keys or RC shocks? Anyone have any thoughts or ideas? Any help would be greatly appreciated. Thanks!

 

[Fless]

How about a pic of a lower control arm where the jounce stop is?

 

[76Nick]

Drivers side looks like its dropped down more but the keys are adjusted the same amount on both sides and the wheel well spacing is the same from drivers to passenger side.

 

[76Nick]

Anyone have any ideas where my issue lies?

 

[BlaineBug]

Is it riding on the bumpstops at normal ride height or are you "flexing" the suspension for your pictures?

 

[randeez]

yea, im confused why you are trying to decrank the torsion bars more? you need to get it off the bump stops to begin with and see how it rides. you may have to find some stock keys if youre trying to only run 3-4" of lift? not sure never messed with torsion bar front end
the RC shocks should be fine for a while since you already have them.

 

[Fless]

On a stock frontend suspension you WANT the lower control arms to contact the jounce stops; that's a pivot point for the fulcrum effect. Not sure why it would be any different for a modified suspension.

 

[BlaineBug]

On a stock frontend suspension you WANT the lower control arms to contact the jounce stops; that's a pivot point for the fulcrum effect. Not sure why it would be any different for a modified suspension.

Only at full suspension compression though - not at all times. To elaborate further, the suspension should be set up in a way where the bump stops are just about never used unless in very rare and extreme circumstances. There would be no harsher ride possible (unless the bump stops fell out) if you were contacting the bump stops frequently OR riding on them all of the time. At that point the bumpstop is supporting all of the weight, you have no suspension to speak of.

 

[Fless]

Only at full suspension compression though - not at all times. To elaborate further, the suspension should be set up in a way where the bump stops are just about never used unless in very rare and extreme circumstances. There would be no harsher ride possible (unless the bump stops fell out) if you were contacting the bump stops frequently OR riding on them all of the time. At that point the bumpstop is supporting all of the weight, you have no suspension to speak of.

That applies to the rear bump stops. I'm talking about the jounce stops in front.

Front Bump Stop Issue

Interesting that works so well for you. I have no experience with those shocks. I live by a quarry so all the heavy trucks are hell on the roads. There is not too many options to avoid bad parts. In my experience a lot of people with poor ride quality on these trucks assume that the front...

www.tahoeyukonforum.com

 

[randeez]

On a stock frontend suspension you WANT the lower control arms to contact the jounce stops; that a pivot point for the fulcrum effect. Not sure why it would be any different for a modified suspension.

hmph....today I learned
Would a new jounce stop help in this case?