E-Bodies.org Cuda Challenger Forum

Technical Shop => Wheels, Tires, Brakes, Suspension & Steering => Topic started by: Cbridgewater on November 25, 2022, 02:36:28 PM

Title: LCA pivot shaft
Post by: Cbridgewater on November 25, 2022, 02:36:28 PM
Re-assembling my front end and having issues with the new strut rods essentially causing the pivot pin to pull out of the LCA bushing. Any suggestions?

The strut rods are new 7/8" from Mancini Racing.
Title: Re: LCA pivot shaft
Post by: dodj on November 25, 2022, 03:20:25 PM
Tighten up the pivot nut.
Title: Re: LCA pivot shaft
Post by: Cbridgewater on November 25, 2022, 03:32:11 PM
It's tightened to where the shoulder of the pivot pin is touching a k frame.
Title: Re: LCA pivot shaft
Post by: anlauto on November 25, 2022, 03:44:01 PM
I'm surprised at the width of the new Poly bushing and how far back the lower control arm now is compared to a factory rubber bushing :huh:
Title: Re: LCA pivot shaft
Post by: Cbridgewater on November 25, 2022, 05:33:21 PM
The passenger side sits just fine too.
Title: Re: LCA pivot shaft
Post by: Brads70 on November 25, 2022, 06:48:08 PM
I wonder if the lower control arm has some excessive play in it?  Watch this to see what I'm refering to.
Title: Re: LCA pivot shaft
Post by: Cbridgewater on November 26, 2022, 07:52:52 AM
Checked the play prior to installing the stiffening plates, all was good.
Title: Re: LCA pivot shaft
Post by: RUNCHARGER on November 26, 2022, 08:11:01 AM
Usually the pivot is tight on the bushing. If there is no slop it will probably assemble okay in the car with the T-Bar pushing it forward. It sure doesn't look right there though.
Title: Re: LCA pivot shaft
Post by: Cbridgewater on November 26, 2022, 10:05:47 AM
Read about a guy having issues with the pivot and new poly bushings, came to the conclusion that the pivots were worn from being pressed in and out many times over 50 years and purchased new set, problem solved. I'll try that I guess.
Title: Re: LCA pivot shaft
Post by: Bullitt- on November 26, 2022, 11:17:34 AM
  I had the same question/issue years ago only on the drivers side..1/8"-1/4" gap
Chryco Psycho   replied that this was normal...   

This picture was after assembly was complete

(https://i.postimg.cc/mkCjWTzb/P3240011.jpg)
Title: Re: LCA pivot shaft
Post by: Cbridgewater on November 26, 2022, 03:46:01 PM
It boggles my mind that the passenger side fits beautifully, and the drivers has the approximate 1/4" gap. I guess we will see what another set of new poly bushings and new pivot shafts do...
Title: Re: LCA pivot shaft
Post by: Bullitt- on November 26, 2022, 06:23:27 PM
  This just occurred to me... I wonder if it's possible I put enough grease in the bushing that it hydraulically locked ,so to speak, the pin from bottoming out ..... Just an idea.
Title: Re: LCA pivot shaft
Post by: HP2 on November 27, 2022, 09:16:49 AM
This is a know issue with poly bushings. Some have turned down the offending strut bushings to bring the control arm back to its correct position. Since one side fits well and the other doesn't I'd suspect the overall positioning of items on the K frame are a bit out of ideal. Check the strut mount on the offending side and see if its identical to the side that fits. Might need to be pushed out an equivalent amount of the control arm gap.  Pull some measurements to see.
Title: Re: LCA pivot shaft
Post by: Cbridgewater on November 27, 2022, 01:12:52 PM
I'll check those things out, thanks.