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Old 10-04-2016, 12:50 AM   #1
V848 Ford
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Default crack in block

After fighting to get this block apart and sandblasted and when I magnafluxed it I found a crack in the inlet port in the valve chamber I don't know if it will leak when hot or if it can be fixed whithout welding or not any ideas I don't want to scrap this after work ?
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Old 10-04-2016, 01:34 AM   #2
Mike V. Florida
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Default Re: crack in block

Stitching.
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Old 10-04-2016, 03:34 AM   #3
tbirdtbird
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Default Re: crack in block

A or B

that will make all the difference
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Old 10-04-2016, 04:43 AM   #4
C26Pinelake
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Default Re: crack in block

I had an A block stitched 5 years ago and I have never had a problem. Wayne
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Old 10-04-2016, 11:17 AM   #5
100IH
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Default Re: crack in block

Access is everything when stitching a crack. Drilling, tapping inserting. Afterwards, pressure testing and hot Ceramic Seal treatment from Irontite is your insurance if you can find someone with the setup to do it. Step one: let the shop that is locally recommended, view the crack and see what they say. The second option would be furnace welding/brazing and is very much a specialty, not usually available locally. The chosen auto machine shop who says it can't be stitched might know where there is a casting repair facility for the weld job. After a welding repair, the pressure testing is still a must do. Sometimes things do escalate into rocket science. Also, if it comes to casting repair in the oven overnight, the babbitt will be removed.
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Old 10-04-2016, 12:46 PM   #6
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Default Re: crack in block

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It''s a 1929 model A block.
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Old 10-04-2016, 01:45 PM   #7
TinCup
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Default Re: crack in block

Check out Tod Buttermore's new cast block might be the best solution.
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Old 10-04-2016, 03:46 PM   #8
BILL WILLIAMSON
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Default Re: crack in block

Don't trust a CRACKED block, except for a boat ANCHOR!
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Old 10-05-2016, 08:34 AM   #9
J and M Machine
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Default Re: crack in block

Quote:
Originally Posted by V848 Ford View Post
After fighting to get this block apart and sandblasted and when I magnafluxed it I found a crack in the inlet port in the valve chamber I don't know if it will leak when hot or if it can be fixed whithout welding or not any ideas I don't want to scrap this after work ?
We successfully repair engines by metal stitching. Those who say it can't be done have never seen it done.
it is a stress free/permanent way of doing crack repair rather than welding or JB weld.
Dealing with engines from the Northeast and around the world, almost every engine has some form of crack repairs needed to make it whole again.

I have enclosed a few pictures showing examples.
http://www.jandm-machine.com/metalStitching.html
Attached Images
File Type: jpg IMG_0829.jpg (37.5 KB, 70 views)
File Type: jpg IMG_1114.JPG (59.3 KB, 72 views)
File Type: jpg IMG_0899.JPG (56.5 KB, 70 views)
File Type: jpg IMG_8132.JPG (46.3 KB, 70 views)
File Type: jpg IMG_8218.jpg (23.6 KB, 75 views)
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Old 10-05-2016, 12:56 PM   #10
Glenn C.
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Default Re: crack in block

If you cannot find a perfect replacement block......metal locking is the way to go. I have seen very large stationary engine blocks and other components, that required stitching and metal locking before the various factory machining procedures commenced.
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