Take it off and clean the area with wire brush, chisel, etc. but don't use abrasives (grinding wheel, flap wheel, etc.) Preheat the part and weld/peen a bit at a time, keep the preheat going. When finished do the preheat again,peen weld and surrounding material, then cover the entire manifold with dry sand (immediately) give it several days to 'chill-out' and you'll have a good repair. Get a box or pan big enough to hold the manifold and the sand ready ahead of time! I've fixed cracked heads like this using an arc welder and high nickel rod. Preheating was done with an insulated cover equipped with cal-rod elements over the the head (the preheat and cool-down MUST be uniform! A rosebud can be used but remember - the piece must be uniformly heated and cooled which is why sand is so good for the cool-down). 8)
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Today's Featured Article - George's Fordson Major - by Anthony West (UK). This is a bit of a technical info to add on to the article about George's Major in the "A Towny Goes Plowing" article. George bought his Major from a an implement sale about 18 years ago for £200.00. There is no known history regarding its origins or what service it had done, but the following work was undertaken by Harold alone to bring it up to show standard. From the engine number, it was found that the major was produced late 19
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