S2000 Under The Hood S2000 Technical and Mechanical discussions.

Front Upper A Arm Mounting Points

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Old Jun 10, 2014 | 02:16 PM
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Default Front Upper A Arm Mounting Points

Hi all, I was wondering what part of the car the front upper a arms mount to. It seems the mounting points on my right upper a arm is shifted resulting in the upper a arm not being parallel to the floor. Thanks!
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Old Jun 10, 2014 | 05:57 PM
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http://robrobinette.com/images/S2000/BallJoints/15.jpg

Check that photo out.
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Old Jun 10, 2014 | 06:33 PM
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Yup mine is definitely skewed then. Is the only way to repair it to take it off and reweld it?
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Old Jun 11, 2014 | 05:57 AM
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Originally Posted by iamatlas
Yup mine is definitely skewed then. Is the only way to repair it to take it off and reweld it?
This is a known issue. It will require welding. TSB for it:

Tech Line Summary Article

Pop noise at front upper control arm mount
Applies To: 2000-2004 S2000

If an oil canning or popping noise is heard when cornering or braking hard, visually inspect the frame rail where the front upper control arm-mounting bracket is spot welded to the frame rail. This problem only occurs to vehicles that have been driven repeatedly on a racetrack or in autocross events. If there is a gap
between the mounting bracket and the frame rail, use the following repair procedure:

� Bend the frame rail in towards the center of the car by placing a block of wood on the bracket spot welds and hitting the block with a large hammer.
� Remove the paint from the bracket and the adjoining frame rail.
� MIG weld the mounting bracket flange to the frame rail
� Refinish the paint to prevent corrosion.


Thread talking about it

:https://www.s2ki.com/s2000/topic/808...reinforcement/
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Old Jun 11, 2014 | 03:23 PM
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The front upper A-arm is not supposed to be parallel to the ground when the car is level. It is part of the suspension's design geometry. A repair may be necessary if the brackets start to tear away: https://www.s2ki.com/s2000/topic/219...-arm-brackets/
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Old Jun 12, 2014 | 05:16 PM
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What am I looking at cost wise to repair it?
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Old Jun 12, 2014 | 07:59 PM
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I have done this preventatively on my '03- i had no separation. It cost me $60 in welding skills by my local connection. He came to the house after i had prepped the area extensively. I removed the upper control arms from the frame rail, but left them connected to the ball joint.

remove all the undercoating in the seam area to be welded.
remove all the paint from the seam area to be welded- try to remove every bit of undercoating from the inner seams etc.
clean the area of residual solvents, oils etc- you can't weld dirt.

after it was welded I cleaned the area, banged off the welding flash, scraped the area clean again, shot it with primer, then painted it, then reundercoated the areas. Reinstalled the UCArms and torqued them to spec with the arms at ride height.

all told, it took me about 8 hours of work total.

good luck
darcy
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