Well folks, during the forum outage my chino-carb arrived (Marvel Schebler TSX replica listed for Farmall) so I modified the linkage to suit the Allis & installed/tuned that.
After getting the tractor running well (better than she's ever run as a matter of fact, the chinky "Gxywady" brand carb works just great) I did notice an ominous rumbling/grinding sound that appeared to emanate from the bottom end. Initially thought this was the loose main bearings coming back to haunt me although oil pressure remained good still.
Anyway, moved the tractor over to the car to inflate the tires and noticed the noise quietened down as I pressed the clutch, and then it got louder quickly & lost drive. Before I could shut the engine down it changed note and the idle went super lumpy like it had a big cam. Touching the throttle out of curiosity and she revved like a sport bike!
Shut her down and noted the flywheel continued to rotate in the bellhousing so I guess either the flywheel came loose or the crank broke
Hoping it is just the flywheel bolts backed out & not done too much damage to the crank, else it's looking like engine swap time for the old girl. Strange thing is, I never had the flywheel or clutch off the engine & it all appeared to be fully installed when I bought it. Guess that just goes to show you should never trust "the last guy's work"!
Will let you know what I find when I get her split, fingers crossed not too severe!
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