Cub temperature

You may not want to know how hot it gets. It would only be cause for concern. These tractors have ran for over 65 years without a temp gauge. It has thermo-syphon circulation which means no water pump. There may be ways to install a temp gauge in the upper hose and possibly a way to install in the lower block inlet. Anything is possible with enough time and money. However, either location will be an extreme and not representative of the engine block temperature.
When you fill the radiator it will spit out the excess. After that as long as the coolant level stays above the top of the core you're good. If there is a problem with coolant level falling below the top of the core, it needs to be checked out. If it is overheating, it will continue to blowout coolant.
I don't know what temp they run at. Out of curiosity, maybe one of these days, I'll check it out with my laser thermometer.
These C60 engines are about as bullet proof as can be. You can be assured in it's lifetime it has overheated and is still running.
To each their own.
 
I had a Cub for a while that someone had drilled into the side of the block just ahead of the oil filter housing, and installed a temperature gauge.

Lots of sealant or JB Weld packed around the probe. I'd imagine the block is pretty thin right there and there was only about 1 thread holding it.

Never found out if it worked. The gauge was shot, so I cut off the lead an inch from the end of the probe. Figured it wasn't leaking so I would leave well enough alone.

Definitely not a modification for the faint of heart.
 

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