Upper control arm cracked,repair or replace? - Team Camaro Tech
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post #1 of 7 (permalink) Old Jul 6th, 08, 04:37 PM Thread Starter
Tim
 
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Upper control arm cracked,repair or replace?

I am installing a disc brake conversion on my '67 and have decided to replace the upper and lower ball joints.
While replacing the left upper ball joint I have noticed a crack in the control arm where the ball joint mounts.
The 2" crack runs from the outer right rivet hole,to the right and then turns inside toward the subframe.

Would it be alright to repair the crack by welding it,or should I replace the control arm?

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post #2 of 7 (permalink) Old Jul 6th, 08, 05:15 PM
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Re: Upper control arm cracked,repair or replace?

Welding would put heat into it and may actually weaken the metal if done wrong..... Buy a new or good used one.

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post #3 of 7 (permalink) Old Jul 7th, 08, 01:46 AM
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Steve
 
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Re: Upper control arm cracked,repair or replace?

Grind a "V" along the crack and weld it, or have it done properly by a welder!
Like the welded up subframe, it's mild steel, so welding wont hurt the A arm.

Nov 68 Van Nuys. 327 floor-shift-auto, Frost Green and not much else when new.

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post #4 of 7 (permalink) Old Jul 7th, 08, 05:17 PM
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Ken Larsen
 
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Re: Upper control arm cracked,repair or replace?

it can be done like Steve suggested and by a very experienced welder-however when it comes to steering or suspension parts my advice would be buy new-why take chances on the important stuff ? might save you a lot of headaches down the road. just my .02 worth.

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post #5 of 7 (permalink) Old Jul 7th, 08, 08:36 PM
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David Pozzi
 
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Re: Upper control arm cracked,repair or replace?

It's a good time to consider Tubular upper A arms if you want to improve your suspension at the same time.
David

Check my web page for First Gen Camaro suspension info:
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post #6 of 7 (permalink) Old Jul 8th, 08, 01:36 AM
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Steve
 
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Re: Upper control arm cracked,repair or replace?

Quote:
Originally Posted by Ken Larsen View Post
it can be done like Steve suggested and by a very experienced welder-however when it comes to steering or suspension parts my advice would be buy new-why take chances on the important stuff ? might save you a lot of headaches down the road. just my .02 worth.

67 coupe "in progress"
I thought the new repro control arms were imported.

Anyway, a good secondhand OE arm would be just fine.

Nov 68 Van Nuys. 327 floor-shift-auto, Frost Green and not much else when new.

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post #7 of 7 (permalink) Old Jul 9th, 08, 06:29 PM Thread Starter
Tim
 
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Re: Upper control arm cracked,repair or replace?

Since I should not weld the control arm myself I ordered a new OE type from D&R that is made by Hugger Performance.Thank's for your help.

The tubular control arms would be a nice upgrade,but I am unsure which brand to get.Summit has a pair of Mcgaughy's tubular control arms that have 5 degrees of positive camber built in for $369.95.

The Camaro has the original coil springs that still have the YW tag attached.An upgrade may be needed.I am going to replace the sway bar with one of the 1 1/8" size units.Thanks,Tim

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