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Old 01-21-2020, 06:20 PM   #1
Randy1944
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Default Crank chunk

Tore down a 1951 Ford flathead v8. When crank was cleaned and checked, this was found. Found no metal in oil pan to speak of. Certainly, nothing of this size. Any ideas?? Cast defect?? Can crank work properly with this “defect”?? 9BF491A0-D27A-47B4-92DF-6171C375C268.jpg
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Old 01-21-2020, 06:27 PM   #2
Kurt in NJ
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Default Re: Crank chunk

Crankshafts were cast in groups, that is where it was broke off the the cluster
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Old 01-21-2020, 06:27 PM   #3
JSeery
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Default Re: Crank chunk

Looks normal to me. They were cast in groups of 4 and then broken apart, which leave the mark you are seeing.
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Old 01-21-2020, 06:38 PM   #4
Randy1944
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Default Re: Crank chunk

Thanks for the great info. I was sure that you would have a great answer. I was concerned that it might affect the balance of the crankshaft.
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Old 01-21-2020, 06:57 PM   #5
Ol' Ron
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Default Re: Crank chunk

Not a problem, but an old crank should be magged, just to eliminate a surprise.
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Old 01-21-2020, 07:07 PM   #6
JSeery
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Default Re: Crank chunk

Quote:
Originally Posted by Randy1944 View Post
Thanks for the great info. I was sure that you would have a great answer. I was concerned that it might affect the balance of the crankshaft.
It was balanced by Ford after that so not an issue.
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