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Re: Anti Cavitation Treatment?

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Michaels Dad

07-17-2013 12:26:14

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I was just informed that cavitation is only a problem on sleeved motors.


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07-17-2013 15:46:50

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 Re: Anti Cavitation Treatment? in reply to Michaels Dad, 07-17-2013 12:26:14  
Nope. Happens on parent bore engines also.

Ford went to great lengths to reduce the possibility of cavitation erosion with the Genesis series blocks. If they never had a problem in the past, they would not have made the changes. You could pretty much count on any TW block made in the 1980s to pinhole within 5000 hours or less.

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Check Break

07-17-2013 15:37:48

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 Re: Anti Cavitation Treatment? in reply to Michaels Dad, 07-17-2013 12:26:14  
Quoting Removed, click Modern View to see

The Fords are parent bore, no sleeves.
Cavitation erosion is not limited to the cylinder walls and will occur anywhere there is coolant. The early blocks, 65 to mid 70-s, did not seem to suffer from erosion as much as those that followed. Not sure why. We always assumed a change in metallurgy.

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07-17-2013 15:46:28

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 Re: Anti Cavitation Treatment? in reply to Check Break, 07-17-2013 15:37:48  
I don't know precisely when it started, but those years sound reasonable for the beginning of thin wall castings in engine blocks, so maybe...............

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07-17-2013 15:19:24

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 Re: Anti Cavitation Treatment? in reply to Michaels Dad, 07-17-2013 12:26:14  
You've been informed incorrectly... or Ford has been lieing to us for ~30 years.


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07-17-2013 13:25:30

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 Re: Anti Cavitation Treatment? in reply to Michaels Dad, 07-17-2013 12:26:14  
Quoting Removed, click Modern View to seeI have found articles that indicate that is "worse" on sleeved engines, worse on a thin wall cast/non-sleeved than on thick wall cast. Also, that it is almost never a problem except on diesels, primarily due to the vibratory spikes resulting from spike rise of high combustion pressures.

Some say Ford's 7.3 cast/non-sleeve is worse than 6.9, because with the overbore, walls are thinner. So, "only" is not a good word, here.

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