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68gmsee · 08-15-2011, 01:04 PM

I'd look for another one. The location of the crack would be difficult to keep it sealed with any kind of epoxy. You have a lot of heat at that point and also vibration from the exhaust pipe. An epoxy would probably hold for a few days- maybe.

You could take it in to see if an experienced cast iron welder can weld it but I suspect the cost would be greater than a replacement. And, be aware that if you take it in for repair you may have to replace it anyway if the repair is not done right.

08-15-2011, 01:04 PM	#2
68gmsee Active Member Join Date: Jul 2007 Location: Centrally located between Houston, Austin and Waco. BCS area. Posts: 7,947	Re: Cracked Exhaust Manifold I'd look for another one. The location of the crack would be difficult to keep it sealed with any kind of epoxy. You have a lot of heat at that point and also vibration from the exhaust pipe. An epoxy would probably hold for a few days- maybe. You could take it in to see if an experienced cast iron welder can weld it but I suspect the cost would be greater than a replacement. And, be aware that if you take it in for repair you may have to replace it anyway if the repair is not done right.