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Crack in block....

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Old Mar 18, 2012 | 08:59 PM
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Default Crack in block....

I bought this L33 aluminum block from ebay & while cleaning it up today & fitting the ac bracket & found one of the ac bracket mounting bosses has 3 small crack's in it. I tightened a bolt into it & it was holding no problem.

It doesnt looked banged on & was wondering what you guys think about it ??

Its just gonna be a daily driver nothing crazy...should I be concerened ???

I highlighted the cracks in red so you can see them.



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Old Mar 18, 2012 | 09:11 PM
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Me personally, I would either weld em up myself, or have them welded up. Just my .02
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Old Mar 18, 2012 | 09:13 PM
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Must be stress cracks. I'm no expert, but I feel the cracks will progress further if nothing is done about it. I would look into blending or possibly weld if that type of aluminum is the welding type.
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Old Mar 19, 2012 | 07:43 PM
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Most likely was in a front-end wreck and the compressor got stuffed. I'd be looking everything over real close...
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Old Mar 20, 2012 | 12:26 AM
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^What he said. But if everything checks out, I'd just have someone stop-drill the cracks, weld it up, and re-tap/chase the threads.
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Old Mar 20, 2012 | 05:34 AM
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Originally Posted by S10xGN
Most likely was in a front-end wreck and the compressor got stuffed. I'd be looking everything over real close...

yup but if there not bad stop drill them at the very least and leave them. dam i cant rememeber what we stop drill on AC alum i think its a drill bit thats .125


or you can some one weld them up and retap

mostly likey you could leave it the way it is and be fine but i wouldnt risk it
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