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Old 08-25-2010, 06:08 PM
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Spindle knuckle scrapes control arm

Ok i have an 1988 Monte Carlo SS, mostly stock suspension/steering and brakes components. All of which are mostly new, but factory replacements.

My problem is, on the drive-side, the top of the Spindle knuckle is scraping the Bottom outer lip of the Upper control arm, right by where the ball-joint seats.

On the passenger side there is enough clearance to fit my finger in-between the two, and it moves pretty freely.

The drive-side assembly is stiff, and hard to turn by hand because something is obviously wrong here. I'm new to suspension/ steering components and I'm learning, so i can't tell whats wrong and it's really on my mind.


This doesn't matter as far as i know but, the frame has been welded in multiple area's, because the car was in a bad accident at one point in its life. I have friends at a local speed/ restoration shop, and i took all of the appropriate measurements they told me to take, and everything checks out. (and the welds that the original owner made on the frame are top notch, very clean!)

Here is what didn't check out, I measured the lengths of the tie-rod Assembly(inner and outer) and the drive-side is about an inch longer than the passenger side. And i measured the distance(height) between lower and upper control arms on both sides, the drive-side comes up about 1/2" shorter.

What could this be?? can a bad upper ball-joint cause this?? or could i have a bent control arm??

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Old 08-25-2010, 06:18 PM
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Check ball joints

Check to see if the upper ball joint is installed correctly. These are a bolt-in ball joint and i have seen where someone bolted one side in on top of the control arm and the other side from under the control arm. Have a look at both sides and you should see what i mean. This could be your problem.
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Old 08-26-2010, 07:58 AM
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Thanks for the input, much appreciated.

Like i said, I'm just now learning how to install/repair chassis and suspension components, what's the best method to disassemble the control arms? I know i have to jack up the control arm, whats the best point to place the jack??

Yesterday i tried to take pressure off the control arm but i can't because i don't have any drivetrain in the car and the front is to light, so I'm going to set the engine back in place but keep it attached to my lift.
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