Posted by RodInNS on December 02, 2015 at 07:44:35 from (206.123.28.58):
In Reply to: Ford 4000/4600 Motor posted by leviskuse on December 02, 2015 at 05:50:41:
All Ford Basildon engines from late 1964 through to the Genesis redesign in 1991-1995 are somewhat prone to cavitation pitting of the cylinder walls which was a result of an ultrasonic vibration in that block design. The thin wall blocks like the 201 and 256/268 were worse I think. This problem didn't seem to become too serious until the early 80's in the 10 series engines... and at that point Ford did a minor redesign of the block where they added external cross hatching to stiffen the block. That helped.... but ultimately they recommended changing the coolant every 24 months and adding a supplemental coolant additive (DCA4) which breaks the surface tension of the coolant and prevents the vacuum bubbles that cause the cavitation. Bottom line... if you bore and sleeve the block and use the additive you should be fine.
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Today's Featured Article - What Oil Should I Use? - by Francis Robinson. I keep seein this question pop up over and over again in discussion groups all over the web. As with many things there are often several right answers and a few wrong ones. Some purist I'm sure will disagree to no end with what I will tell you but most of us out here in the real world don't really care do we ? Some of them only bring their noses down out of the air long enough to look down them anyway. If you are like me you are only doing this old tractor stuff because you enjoy it. You
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