Upper control arm mount welding
#3
Large diameter front sway bar, sticky tires and autocrossing/racing can cause the rear mount on the front upper control arm to start to separate at the spot welds.
Good pictures on this site:
http://www.pbase.com/rsrock/aarm
I think there is a TSB on this topic from several years back and some discussion years ago about whether the welding would be A Stock legal if there was no Honda directed repair.
From:
https://www.s2ki.com/forums/index.php?showt...0&#entry6525583
Tech Line Summary Article
ATS040809
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:
Good pictures on this site:
http://www.pbase.com/rsrock/aarm
I think there is a TSB on this topic from several years back and some discussion years ago about whether the welding would be A Stock legal if there was no Honda directed repair.
From:
https://www.s2ki.com/forums/index.php?showt...0&#entry6525583
Tech Line Summary Article
ATS040809
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:
#6
Originally Posted by TubeDriver,Apr 14 2008, 12:54 PM
I would consider taking it to Piper Motorsports.
It is good to know that AP2's don't typically suffer this issue. Thanks, Pete!
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#8
I got the welding and refinishing done at FunKtion Auto in Dulles. Apparently the sheet metal had started to tear, not just the spot welds breaking. They painted and re-undercoated as well. I didn't think it would make as much difference as it seems to have made in the feel of the car. Could just be in my head. They got it done in a day for me. Now I've got 1 less excuse for doing crappy this weekend at FedEx.
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