Ford 4000 major problem


Yes, I think they call it electrolysis. Looking from the coolant side the holes are perfectly formed, like they were drilled.
The porous block syndrome was caused by vibrations from the engine causing cavitation of the engine coolant inside the water jacket. These bubbles exploded on contact with the inside walls of the water jacket, each time pitting the surface, eventually the pitting would break through the walls, giving you the porous block.
Ford strengthened the block with Ribbs (ribbed block engine) which partly aleveated the problem by damping down the vibrations through the engine. The porous block syndrome was only cured once chemists got involved and produced an additive for the coolant to stop the cavitation. The 3 and 6 cylinder engines weren't as prone (but not immune) to the porous block, as the frequency of the vibrations was different to the 4 cylinder engines.
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The original block hasn't a liner, so there was a liner fitted to repair the old block?
You cant draw the old liner out and replace?

Early moves to target wild oats

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Growers and agronomists now face the dilemma of an early application to remove competition from emerged wild oats, or holding off to allow more weeds to germinate.

Syngenta grassweeds technical manager, Georgina Wood, urges Axial Pro treatment as soon as conditions allow, once weeds are actively growing.

“That offers the chance to control wild oats more cost effectively at lower rates, whilst there is still the flexibility to tailor application rates up to 0.82 l/ha for larger or over wintered weeds and difficult situations.

“The variability of crops and situations this season means decisions for appropriate Axial Pro rates and application techniques will need to be made on a field-by-field basis,” she advised.


Miss Wood urges...