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Message: <blockquote data-quote="Kevin Palmer" data-source="post: 543933" data-attributes="member: 54263">Well, I was going to warn you not to drill too deep. However.......I am not a fan of JB Weld when it comes to sealing coolant. You will need to drill into the head far enough to reach the water jacket he punctured. Then the hole will need to be tapped out to some thread. Does not matter really what the thread is as long as you know what it is. I would then get a set screw with an Allen hole in the end of it. Coat the set screw with QUALITY Permitex. Normally blue is good to go with coolant. But in this case I would use Red or Black as they will take higher temps. Since it sits so close to the exhaust port I would think it gets hot fast in that area. Once you install it into the inner hole let it sit over night so it seals very well. Reinstall the manifold. On the hole where you did all the work use a bolt short enough not to press against the set screw.Option 2: You could do all the above minus the set screw. Get a bolt long enough to pass through the manifold and deep enough into the head to pass thru the inner hole you have drilled and tapped. You will still need to coat it with Permatex.And the screaming idea you mentioned won't hurt either.... You could having him feeling bad for a good long while. Just think of all the nice things you could get....</blockquote>