| Mr_Corvair | -- 12-13-2019 @ 4:55 PM |
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I'm sure this has been asked many times in the past. I'd just like to get the latest thinking. I pressure tested what seemed to be a clean block. The leak test showed bubbles between a valve area and a cylinder bore. Obviously the leak was from the water passageway. I can send a video from my phone. Can it economically be repaired? Is it worth it? Or should I just toss it and move on? Thank you. Mel
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| Derby | -- 12-14-2019 @ 6:37 AM |
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There is a section in H and H Flatheads book on rebuilding Ford flathead engines that shows a repair. I do not have the book at hand, but will check Monday to see if it might apply.
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| mfirth | -- 12-14-2019 @ 7:25 AM |
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Mr__Corvair, you might ask the guys on the Ford Barn , they know their stuf too. mike
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| TomO | -- 12-14-2019 @ 8:48 AM |
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If the crack does not extend into the cylinder, it can be economically fixed by stitching. https://www.youtube.com/watch?v=Pq0wfU4ZaKk My advice to you is to contact an engine builder that is familiar with the Ford blocks and have the block Magnafluxed to show all of the cracks and then give you an estimate of the repair costs. There may be more cracks in the oil gallery or other cylinders. https://www.youtube.com/watch?v=oQK1t8lGEK8 Watch these videos to see the processes. Tom
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| Mr_Corvair | -- 12-16-2019 @ 6:29 PM |
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It does extend into the cylinder. The bubbles came from the top 5/8 of the cylinder bore. It was also mag particle tested. No other cracks were found. I think I'm going to give up on it. Anybody want it?
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| TomO | -- 12-16-2019 @ 7:03 PM |
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Did you check with a machine shop to see if a wet sleeve can be installed after they stitch the deck. With no other cracks, and I needed an engine, I would check it out. Blocks with one crack are usually salvaged these days as blocks with no cracks are getting harder to find. Tom
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| Derby | -- 12-17-2019 @ 8:39 AM |
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Just to confirm that a repair is possible and add to the information already provided, here is what H & H illustrated. Pages 56 and 57. A local machine shop here in CT does such a repair as well as others.
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| supereal | -- 12-18-2019 @ 2:14 PM |
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As mentioned, cracks that extend into the bore can be sleeved if in the right places. In the valve area, we install a threaded pin and resurface the block.. If the crack extends to the lower end of the bore, sleeving isn't recommended. If the crack is the result of freezing, it is likely there are hidden cracks, making the block junk.
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