05-20-2014, 05:42 AM | #1 |
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Join Date: Jan 2014
Location: 45 minutes from the border
Posts: 6
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Cracked Blocks
Is there an area that the "BA" or "Q"blocks were prone to crack?
Do these cracks become visible with the naked eye? Are these blocks with cracks repairable ? Thank you for your input Rick |
05-20-2014, 10:01 AM | #2 |
Senior Member
Join Date: May 2010
Location: Northeast Pennsylvania
Posts: 1,582
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Re: Cracked Blocks
From the center inner exhaust ports up to the valve seats and sometimes all the way to the cylinder walls. These are caused by overheating and can often be repaired if they are accessible.
Pan rails from freezing. Junk block Webbing from freezing. Junk block Center head bolt holes to water jacket. Usually ignored. |
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05-20-2014, 10:23 AM | #3 | |
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Join Date: May 2010
Location: Mill Valley,Ca.
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Re: Cracked Blocks
Quote:
The eye can sometimes spot a crack, not dependably. Look to compare texture and cleanliness of different cylinder areas, the odd one will often be the offender... Through a valve seat into a port is very common... Karl |
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05-20-2014, 01:22 PM | #4 |
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Join Date: Jul 2010
Posts: 2,593
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Re: Cracked Blocks
Often wondered why a Pan rail crack is seen as a junk block? Could anyone enlighten me?
Martin. |
05-20-2014, 02:14 PM | #5 | |
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Join Date: Dec 2013
Location: Minnesota, Florida Keys
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Re: Cracked Blocks
Quote:
Anything is possible. I had a friend several years ago that was lucky enough to come upon a '28 or '29 LaSalle roadster. The previous owner had stored it over the winter with plain water in it. There were literally chunks busted out of the block. He found someone that was able to bring it back 100%. It was expensive and involved putting tghe whole block in a furnace for several days, but it did work, |
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05-20-2014, 03:25 PM | #6 |
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Join Date: Jul 2010
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Re: Cracked Blocks
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Am I missing something? Martin. |
05-20-2014, 03:44 PM | #7 |
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Join Date: May 2010
Location: so cal, placerville, vegas
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Re: Cracked Blocks
I'm thinking that Ford blocks become labelled 'junk', because there are so many, and relatively easy to find another. Like tubman above, one of the fellows in our local Ford regional group has something a little out of the 'ordinary', a very early Pontiac. Ever try to find an early Pontiac engine? So, for one of those 'rail' cracks, down the length of a very long block, he did a weld repair. It's been several years, and entirely successful. (He works at a place where he has access to a large furnace - the block was in there for over a week, and after the repair, the block was left in there to cool with the furnace - it took days, just to cool.)
Nothing 'special' about a Ford block - it CAN be repaired - either home-brew, or by a pro - just takes a little knowledge and care. JMO |
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