Farmall Cub Engine Block

Vik

New User
Hello All,
Several years ago, during an engine cooling system flush, the engine was flushed with water, and the water was left overnight for draining the next day. Temperature dropped severely that night, freezing the water in the cooling system...not a happy event, but - - - - happens.

I put a heater under the tractor and unthawed the engine. Several obvious areas were damaged by the freeze.

1. The metal connector (termed thermostat housing) from the top of engine to the hose going to top of radiator broke.

2. The cooling system "bottom tank" cast housing cracked (welding shop repaired the cracked area).

3. I have not pressure tested the radiator, but that can be replaced easily enough if bad.

These were the only visual areas of damage.

The engine turns over without any problem.

My main concern is the engine block. [b:83bd6c5f88]There were no obvious signs of coolant in the oil,[/b:83bd6c5f88] however examining the block for cracks will be labor intensive and expensive (disassembly and dye testing, etc.). Based on any information or feedback that you have, can the Cub engine block take a hard freeze, without damage? I know any reply will be highly speculative, but I am trying to avoid disassembling the engine, and maybe take a chance it is OK.

If you have any personal words of wisdom, it will be appreciated.
 
Save your self a lot of time and $$ get ti running then check for water in the oil Not the other way around and take it apart and maybe find a crack which would cost a lot of $$. Once you have it running and if you do find coolant in the oil then open it up but not until you have done that check
 
(quoted from post at 06:31:10 09/26/15) If you don't see any external cracks, and no coolant in the oil, I would get it running and see what happens.

Both replies posted basically indicated the same course of action. Put it together and see what happens. That is the course I will take. Thanks for your thoughts on this.
 
Always better to trouble shoot then parts and never parts then trouble shoot so getting it running and checking for coolant in the oil is your next step to trouble shooting it
 
get it together and them add water, then pressureize / pressure test the cooling system.. leave pan open.. look for water.. or at least drain pan and then replug, then pull plug to look for drips.

past that.. fill system with water, not coolant, then run... then check.

don't use coolant.. coolant can wipe out bearing shells fast ( faster than water in the oil anyway )
 

Thanks for the troubleshooting tips. There is still a lot of work before I reach this stage, This is was picked as a good time to restore the tractor...removing individual pieces, cleaning, painting, etc., now in progress.
 

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