LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Upper ball joint spec

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Old 11-12-10, 12:45 PM
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tomtheslac
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Default Upper ball joint spec

I have failed safety twice now because of upper front ball joints. Replaced them from a donor and still failed. I have the service manual and it gives 9 to 30 in/lbs for tourque spec on the ball joint. The ones I put in passed that test. My mechanic however just puts a pry bar on the coil and lifts the UCA. How much play up/down play is acceptable? Is there supposed to be some wiggle room or do I really need new ones?

Thanks in advance...
Old 11-12-10, 02:19 PM
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PureDrifter
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find a new mechanic, that's such a ghetto way to rig a safety test....

if you put the wheel on and there's no noticeable play, it's safe enough to pass most state-mandated inspections.
Old 11-12-10, 03:05 PM
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tomtheslac
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Ordered the Arnott's anyway...now I have two sets of UCA's to see if I can remanufacture one. OEM set with another balljoint
Old 11-12-10, 05:07 PM
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i wouldnt run arnott, esp. with all the recent experiences members have had.
Old 11-13-10, 03:20 PM
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StevieA
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I got APXautoparts $130/side Ebay installed them last week nice & smooth now both my old ones were loose & knocking over gravel/rough bumps obvious up & down play with a pry bar & wheel off
Old 11-14-10, 06:27 AM
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tomtheslac
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I am going to take these into the shop (too&die) and see if I can re/re one of these with a $20 balljoint from Napa. Just to see...
Old 11-15-10, 02:44 AM
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Max Power
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Stevie, How are those APX ones? No problems with the install?
Old 11-15-10, 09:11 AM
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StevieA
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Originally Posted by Max Power
Stevie, How are those APX ones? No problems with the install?
Not at all. I remember you and JimsGX saying the Arnott ones had the wrong taper on the ball joint so I was weary of that when I installed these but everything fit great.

When comparing to those I removed from the car, the old ones where thicker steel on the opposite ends from the ball joint (I'm assuming the ones I removed were OEM) but that's about it. Time will tell if the boot on the ball joint stands the test of time.

Last edited by StevieA; 11-15-10 at 09:32 AM.
Old 11-15-10, 07:44 PM
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Max Power
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Originally Posted by StevieA
Not at all. I remember you and JimsGX saying the Arnott ones had the wrong taper on the ball joint so I was weary of that when I installed these but everything fit great.

When comparing to those I removed from the car, the old ones where thicker steel on the opposite ends from the ball joint (I'm assuming the ones I removed were OEM) but that's about it. Time will tell if the boot on the ball joint stands the test of time.
Awesome!! that's good to know!!!
Old 11-16-10, 12:19 AM
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Max Power
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Actually, I wanted to ask if the cotter pin hole lined up directly with the castle nut?
Old 11-16-10, 08:32 AM
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StevieA
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The thread of the ball joint bolt offered several holes to choose from for the cotter pin so it was an easy fit!
Old 01-23-11, 06:38 PM
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KevinE.
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Originally Posted by StevieA
The thread of the ball joint bolt offered several holes to choose from for the cotter pin so it was an easy fit!
how are the APX UCAs holding up?
Old 01-23-11, 07:13 PM
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StevieA
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Haven't done a visual inspection but working fine. Will have it on the hoist soon will post if any problems
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