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Professor · 12-21-2005, 05:32 PM

If there are not 360 degrees of teeth on the main gear, indicating that the only use of the thing would be to make the shaft move in a back-and-forth rotation by a similar back-and-forth rotation of the crank handle, it almost looks like an old valve lapper. ... for lapping in valves into the cylinder head (or, in the case of a flat-head engine, into the engine block).

12-21-2005, 05:32 PM	#7
Professor Registered User Join Date: Mar 2001 Location: Fayetteville, Arkansas Posts: 160	Re: Old Tools What is this ? If there are not 360 degrees of teeth on the main gear, indicating that the only use of the thing would be to make the shaft move in a back-and-forth rotation by a similar back-and-forth rotation of the crank handle, it almost looks like an old valve lapper. ... for lapping in valves into the cylinder head (or, in the case of a flat-head engine, into the engine block).