Best way to fix a cylinder head crack?

i had smoke leaking from under the exhaust manifold and when taking it off ive noticed a small crack which leads into the hole for the exhaust stud.. apparently common on this type of car due to it having 3mm clearance from the stud hole itself...im looking for the cheapest option and option one is using heat... show more i had smoke leaking from under the exhaust manifold and when taking it off ive noticed a small crack which leads into the hole for the exhaust stud.. apparently common on this type of car due to it having 3mm clearance from the stud hole itself...im looking for the cheapest option and option one is using heat durable epoxy and my other option is to braze the crack.. will brazing work? its literally 1mm X 3mm
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