Hey guys. So I went up north (to the old cabin which we sold to a friend of the family), to retrieve my '41 SC that I had done a partial engine rebuild on it in 2003 (new rings, honed clinders, head shaved/magnafluxed, new head gasket, new valves/springs, flushed radiator, and a couple other things I can't remember). It has been sitting up there and hasn't ran in about 2 years. So anyways, I figured I should probably give it a tune up before I try to run it. Took the carb off, cleaned it. Drained the coolant, which was low... Filled it. New plugs. Took off the gas tank and had it blasted/soaked in acid and sealcoated. New sediment bowl-due to my cousin overtightening the last one that was on there ten years ago. Then I figured I mine as well change the oil. Took the plug out. GREEN antifreeze comes out. Probably about a quart of pure green. Then it seemed to be a lot of water/oil/antifreeze mixed. Now I live in MN, so it does get cold over the winters... but I had a 60/40 mix of antifreeze and water-more than adequate. So I thought I would pull the valve cover-just to see if it had been leaking while running... 2 years ago. There was oil/
coolant mixed on top of the head-therefore it must have been pumping it through so I don't think it froze over the winter and cracked the block. Now for the tricky part. There is an ancient patch just behind the carb that is about 8 inches long, and 2.5 inches tall. When I did the rebuild, that seemed to be ok-i removed it, and looked for any cracks with negative results(appeard to be from a thrown rod). Reinstalled with the bolts it was attatched with, and some RTV "gasket maker" to prevent any leaks. My question is, what could be going on with the oil in the coolant? 1) Cracked head/block- hope not 2) Blown head gasket I would hate to have to put a different block in the tractor, as of right now it is the original-#'s match.
Anyone had any experience with that radiator addidtive "Stop Leak" or whatever?
Any oher suggestions would be greatly appreciated.
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