Posted by Billy NY on November 30, 2015 at 07:19:38 from (104.228.35.235):
In Reply to: Ford 4600 head gasket? posted by leviskuse on November 30, 2015 at 07:01:22:
You are fortunate, and I applaud you for the tear down, its some work for sure. The hole is from cavitation. Porous block, can you post a photo of it here ? It would be helpful to see it, and for others to learn from it.
You would think it would cavitate through the sleeve to the combustion chamber, but I'll refrain from comment there not having torn one of these down or seen one apart since we sold the previous series tractors new. We used to get some of these in from Canada with cracked blocks sometimes.
Well water is not advisable to use in a coolant mix on these, reiterating the earlier post by stating that, distilled water and the proper coolant with the anti-cavitation additive or the pre-mix.
I would not trust any snake oil fix for that block, because you'll eventually miss the coolant in the oil and the damage it will do, sooner or later it will come back to haunt you, but the real question is, what is the best fix for that block, thats an interesting one and it would be great to see some photos of it.
Good thing is you took it apart and know what it is, you are lucky on the oil contamination given the tough pulling it was doing and that it was getting hot.
Coolant port/jacket being blocked is not a good thing, while sealants work, I for one don't care for them. I had to use it in a 4 cylinder 172 ford motor with a porous block, darned thing leaked coolant like yours externally, nothing in the oil pan, all on the floor,, sealant worked to reduce that leak to something much more manageable, but it did clog up the LP vaporizer on this one, but that was about the only option and this engine is sleeved being the year it is or should be, who knows it may have been swapped out just the same. I thought it to be head gasket too, but there was no sign of it, further investigation proved it was actually the block casting itself,
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