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Repairing cracked VC?

 
Old Jan 21, 2015, 09:45 PM
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Repairing cracked VC?

What's the best way to repair a cracked valve cover. I'm an idiot and over torqued one of the bolts... One would figure welding but these things are magnesium. Thanks.
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Old Jan 22, 2015, 07:00 AM
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Clean. Sand. Clean. JB-Weld.
Us as little of this stuff as you could.
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Old Jan 22, 2015, 09:44 AM
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Not a better way? Or is this my only option?
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Old Jan 22, 2015, 10:05 AM
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Magnesium CAN be welded, however, I'm sure not too many people can or want to do it, especially on a valve cover...
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Old Jan 22, 2015, 10:35 AM
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I tired with my buddy but couldn't get it to weld. The reason is you need a special filler rod to do it. I ended up buying another. Also most people are scared to weld it because it contains MG but we never got it to light on fire and we hit it alot with the TIG torch. If you can find someone with the MG filler rod you can get it fixed. The rod is 90$ 1/4 pound online.
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Old Jan 23, 2015, 10:01 AM
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The truth is its an alloy, the difference between mag and aluminum alloy is at what percentage of mag vs aluminum which you switch it over?

It can be welded. Toxic fab I believe has mentioned he welds these.... but he also has mad crazy skillz
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Old Jan 23, 2015, 10:33 AM
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Originally Posted by GTijoejoe View Post
The truth is its an alloy, the difference between mag and aluminum alloy is at what percentage of mag vs aluminum which you switch it over?

It can be welded. Toxic fab I believe has mentioned he welds these.... but he also has mad crazy skillz
The VC is just an aluminum alloy which was alloyed with MG. I am sure toxic fab would have both the right filler and the ability to fix it.
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