Back when these "enclosed tractors" were new, they were rode hard and put up wet. When a radiator sprung a leak, they added some form of stop leak in order to get those last bales into the barn. This likely happened several times over the trucks life. A brass and copper radiator was an expensive item to replace, and the nearest shop which could repair a leaky one correctly was all the way into town, and the guy charged an arm and a leg (like 2 dollars) to fix it. Stopleak was a nickel.
I had to remove an unbelievable amount of hardened black crud glued to the bottom of the water jacket of a 216. I had to completely disassembled the engine to get it clean. There was nothing which would dissolve this stuff.
I used rods of various sizes through coolant passages in the top of the deck of the block and hammered the crud which was in the bottom of the water jacket to break it up enough to fish it out. I also did that type of chiselling via the drain hole, all of the freeze plug holes and the water pump hole.
It was painstaking and barely doable. No way to do this with an assembled engine.

Last edited by Phak1; 08/19/2024 11:44 AM. Reason: Spelling
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission