Suspension and Chassis Questions about your suspension? Need chassis advice?

Questions on control arm preload

Old 11-11-2018, 06:49 PM
Junior Member
Thread Starter
Join Date: May 2005
Location: Burien, Wa USA
Posts: 25
Likes: 0
Received 0 Likes on 0 Posts
Car: '89 RS Camaro
Engine: 3.4l from 95 chicken car
Transmission: 700 AOD
Questions on control arm preload

Hi all
Ok, just rebuilt entire front end...all moog except the delco idler arm, and kyb agx's.
Question is, whats the best way to tighten the control arm bolts? Can the car just be resting on jack stands under the control arms, or is it better with the tires on, sitting on ramps or blocks?
Also would it be better to adjust the idler arm position with the car weight on the suspension or can i do it with the car sitting up in the air and tires off?

Many thanks in advance !
DazzlinDave is offline  
Old 11-11-2018, 07:04 PM
Supreme Member
iTrader: (1)
Join Date: Sep 2005
Posts: 21,331
Likes: 0
Received 5 Likes on 5 Posts
Car: Yes
Engine: Usually
Transmission: Sometimes
Axle/Gears: Behind me somewhere
Re: Questions on control arm preload

If you have the stock style bushings, rubber, then it's best to have them at least close to their ultimate orientation. They rubber itself is supposed to be locked into place, then its flexion take up the articulation of the metal parts. That way they're at rest in the "normal" suspension position.

If on the other hand you have poly, or any of the various other freely rotating designs, then it doesn't matter.

Idler arm, none of that matters. The steering linkage ahead of the rod ends is fixed and doesn't articulate with suspension travel. It's a parallelogram, and depends only on the steering gear mounting location, the idler arm mount location, and the control arm pivot axes. If you can imagine the line going through the CA bushings, the inner rod ends should be in that line; the idler arm should be adjusted so that its axis is parallel to the steering gear's axis, and vertically so that the center link is parallel to the line between the CA bushing lines as described above. You can tweeeeek it from there, to get different bump steer results for instance (the wheels turn in or out according to the suspension travel on that side), but that's the baseline.
sofakingdom is offline  
Related Topics
Thread Starter
Last Post
Suspension and Chassis
03-07-2007 03:37 PM
Suspension and Chassis
03-20-2002 12:41 PM
Jason M 91Z
Transmissions and Drivetrain
04-11-2001 07:37 PM
Tech / General Engine
11-12-2000 04:09 PM
Transmissions and Drivetrain
09-25-2000 09:44 PM

Thread Tools
Search this Thread
Quick Reply: Questions on control arm preload

Contact Us - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.
  • Ask a Question
    Get answers from community experts
Question Title:
Your question will be posted in: