Each piston has two types of rings, with different tasks to do.
If the compression rings aren't sealing, you will see lots of blowby. If the compression rings are doing their job and the oil control ring(s) aren't doing their job, the pistons will "pump" oil and the engine will use oil and smoke.
Worn valve guides MAY contribute to oil use and smoke, but since this is a flathead engine, the valvespring/valvlestem area is not bathed in oil like it is in an OHV engine and it's not as likely lot's of oil is being pulled past the valvestems.
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
... [Read Article]
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